Promote to Master (#748)

* initial commit

* adding quotes for the array error

* Create Gemfile

* Create Gemfile.lock

* add .nvmrc and .node-version

* removed /article from URL

* update links to work with netlify

* more fixed links

* link fixes

* update bad links

* Update netlify.toml

toml test for redirects

* article redirect

* link fixes

* Update index.html

* Update netlify.toml

* Update _config.yml

* Update netlify.toml

* Update netlify.toml

* Update netlify.toml

* Update netlify.toml

* Update netlify.toml

* add article back into URL for launch

* Update netlify.toml

* Update netlify.toml

* add order to categories front matter

* Update netlify.toml

* update

* sidemenu update

* Revert "sidemenu update"

This reverts commit 5441c3d35c.

* update order prop

* Navbar updates per Gary and compiler warnings

* font/style tweaks

* Update sidebar.html

* Stage Release Documentation (#739)

* initial drafts

* rewrite Custom Fields article to prioritize new context-menu option & better organize ancillary information

* edit

* edit

* Custom Field Context Menu & CAPTCHA item in release notes

* SSO relink event

* update rn

* small edits

* improve release notes titles

* fix side menu

* Edits courtest of mportune!

* update order

* link fixes

* link cleanup

* image updates and a link

* fix trailing slash

Co-authored-by: DanHillesheim <79476558+DanHillesheim@users.noreply.github.com>

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/cache.rb

@@ -0,0 +1,190 @@
+# frozen_string_literal: true
+
+require "digest"
+
+module Jekyll
+  class Cache
+    # class-wide base cache
+    @base_cache = {}
+
+    # class-wide directive to write cache to disk is enabled by default
+    @disk_cache_enabled = true
+
+    class << self
+      # class-wide cache location
+      attr_accessor :cache_dir
+
+      # class-wide directive to write cache to disk
+      attr_reader :disk_cache_enabled
+
+      # class-wide base cache reader
+      attr_reader :base_cache
+
+      # Disable Marshaling cached items to disk
+      def disable_disk_cache!
+        @disk_cache_enabled = false
+      end
+
+      # Clear all caches
+      def clear
+        delete_cache_files
+        base_cache.each_value(&:clear)
+      end
+
+      # Compare the current config to the cached config
+      # If they are different, clear all caches
+      #
+      # Returns nothing.
+      def clear_if_config_changed(config)
+        config = config.inspect
+        cache = Jekyll::Cache.new "Jekyll::Cache"
+        return if cache.key?("config") && cache["config"] == config
+
+        clear
+        cache = Jekyll::Cache.new "Jekyll::Cache"
+        cache["config"] = config
+        nil
+      end
+
+      private
+
+      # Delete all cached items from all caches
+      #
+      # Returns nothing.
+      def delete_cache_files
+        FileUtils.rm_rf(@cache_dir) if disk_cache_enabled
+      end
+    end
+
+    #
+
+    # Get an existing named cache, or create a new one if none exists
+    #
+    # name - name of the cache
+    #
+    # Returns nothing.
+    def initialize(name)
+      @cache = Jekyll::Cache.base_cache[name] ||= {}
+      @name = name.gsub(%r![^\w\s-]!, "-")
+    end
+
+    # Clear this particular cache
+    def clear
+      delete_cache_files
+      @cache.clear
+    end
+
+    # Retrieve a cached item
+    # Raises if key does not exist in cache
+    #
+    # Returns cached value
+    def [](key)
+      return @cache[key] if @cache.key?(key)
+
+      path = path_to(hash(key))
+      if disk_cache_enabled? && File.file?(path) && File.readable?(path)
+        @cache[key] = load(path)
+      else
+        raise
+      end
+    end
+
+    # Add an item to cache
+    #
+    # Returns nothing.
+    def []=(key, value)
+      @cache[key] = value
+      return unless disk_cache_enabled?
+
+      path = path_to(hash(key))
+      value = new Hash(value) if value.is_a?(Hash) && !value.default.nil?
+      dump(path, value)
+    rescue TypeError
+      Jekyll.logger.debug "Cache:", "Cannot dump object #{key}"
+    end
+
+    # If an item already exists in the cache, retrieve it.
+    # Else execute code block, and add the result to the cache, and return that result.
+    def getset(key)
+      self[key]
+    rescue StandardError
+      value = yield
+      self[key] = value
+      value
+    end
+
+    # Remove one particular item from the cache
+    #
+    # Returns nothing.
+    def delete(key)
+      @cache.delete(key)
+      File.delete(path_to(hash(key))) if disk_cache_enabled?
+    end
+
+    # Check if `key` already exists in this cache
+    #
+    # Returns true if key exists in the cache, false otherwise
+    def key?(key)
+      # First, check if item is already cached in memory
+      return true if @cache.key?(key)
+      # Otherwise, it might be cached on disk
+      # but we should not consider the disk cache if it is disabled
+      return false unless disk_cache_enabled?
+
+      path = path_to(hash(key))
+      File.file?(path) && File.readable?(path)
+    end
+
+    def disk_cache_enabled?
+      !!Jekyll::Cache.disk_cache_enabled
+    end
+
+    private
+
+    # Given a hashed key, return the path to where this item would be saved on disk.
+    def path_to(hash = nil)
+      @base_dir ||= File.join(Jekyll::Cache.cache_dir, @name)
+      return @base_dir if hash.nil?
+
+      File.join(@base_dir, hash[0..1], hash[2..-1]).freeze
+    end
+
+    # Given a key, return a SHA2 hash that can be used for caching this item to disk.
+    def hash(key)
+      Digest::SHA2.hexdigest(key).freeze
+    end
+
+    # Remove all this caches items from disk
+    #
+    # Returns nothing.
+    def delete_cache_files
+      FileUtils.rm_rf(path_to) if disk_cache_enabled?
+    end
+
+    # Load `path` from disk and return the result.
+    # This MUST NEVER be called in Safe Mode
+    # rubocop:disable Security/MarshalLoad
+    def load(path)
+      raise unless disk_cache_enabled?
+
+      cached_file = File.open(path, "rb")
+      value = Marshal.load(cached_file)
+      cached_file.close
+      value
+    end
+    # rubocop:enable Security/MarshalLoad
+
+    # Given a path and a value, save value to disk at path.
+    # This should NEVER be called in Safe Mode
+    #
+    # Returns nothing.
+    def dump(path, value)
+      return unless disk_cache_enabled?
+
+      FileUtils.mkdir_p(File.dirname(path))
+      File.open(path, "wb") do |cached_file|
+        Marshal.dump(value, cached_file)
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/cleaner.rb

@@ -0,0 +1,111 @@
+# frozen_string_literal: true
+
+module Jekyll
+  # Handles the cleanup of a site's destination before it is built.
+  class Cleaner
+    HIDDEN_FILE_REGEX = %r!/\.{1,2}$!.freeze
+    attr_reader :site
+
+    def initialize(site)
+      @site = site
+    end
+
+    # Cleans up the site's destination directory
+    def cleanup!
+      FileUtils.rm_rf(obsolete_files)
+      FileUtils.rm_rf(metadata_file) unless @site.incremental?
+    end
+
+    private
+
+    # Private: The list of files and directories to be deleted during cleanup process
+    #
+    # Returns an Array of the file and directory paths
+    def obsolete_files
+      out = (existing_files - new_files - new_dirs + replaced_files).to_a
+      Jekyll::Hooks.trigger :clean, :on_obsolete, out
+      out
+    end
+
+    # Private: The metadata file storing dependency tree and build history
+    #
+    # Returns an Array with the metdata file as the only item
+    def metadata_file
+      [site.regenerator.metadata_file]
+    end
+
+    # Private: The list of existing files, apart from those included in
+    # keep_files and hidden files.
+    #
+    # Returns a Set with the file paths
+    def existing_files
+      files = Set.new
+      regex = keep_file_regex
+      dirs = keep_dirs
+
+      Utils.safe_glob(site.in_dest_dir, ["**", "*"], File::FNM_DOTMATCH).each do |file|
+        next if HIDDEN_FILE_REGEX.match?(file) || regex.match?(file) || dirs.include?(file)
+
+        files << file
+      end
+
+      files
+    end
+
+    # Private: The list of files to be created when site is built.
+    #
+    # Returns a Set with the file paths
+    def new_files
+      @new_files ||= Set.new.tap do |files|
+        site.each_site_file { |item| files << item.destination(site.dest) }
+      end
+    end
+
+    # Private: The list of directories to be created when site is built.
+    # These are the parent directories of the files in #new_files.
+    #
+    # Returns a Set with the directory paths
+    def new_dirs
+      @new_dirs ||= new_files.flat_map { |file| parent_dirs(file) }.to_set
+    end
+
+    # Private: The list of parent directories of a given file
+    #
+    # Returns an Array with the directory paths
+    def parent_dirs(file)
+      parent_dir = File.dirname(file)
+      if parent_dir == site.dest
+        []
+      else
+        parent_dirs(parent_dir).unshift(parent_dir)
+      end
+    end
+
+    # Private: The list of existing files that will be replaced by a directory
+    # during build
+    #
+    # Returns a Set with the file paths
+    def replaced_files
+      new_dirs.select { |dir| File.file?(dir) }.to_set
+    end
+
+    # Private: The list of directories that need to be kept because they are
+    # parent directories of files specified in keep_files
+    #
+    # Returns a Set with the directory paths
+    def keep_dirs
+      site.keep_files.flat_map { |file| parent_dirs(site.in_dest_dir(file)) }.to_set
+    end
+
+    # Private: Creates a regular expression from the config's keep_files array
+    #
+    # Examples
+    #   ['.git','.svn'] with site.dest "/myblog/_site" creates
+    #   the following regex: /\A\/myblog\/_site\/(\.git|\/.svn)/
+    #
+    # Returns the regular expression
+    def keep_file_regex
+      %r!\A#{Regexp.quote(site.dest)}/(#{Regexp.union(site.keep_files).source})!
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/collection.rb

@@ -0,0 +1,309 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Collection
+    attr_reader :site, :label, :metadata
+    attr_writer :docs
+
+    # Create a new Collection.
+    #
+    # site - the site to which this collection belongs.
+    # label - the name of the collection
+    #
+    # Returns nothing.
+    def initialize(site, label)
+      @site     = site
+      @label    = sanitize_label(label)
+      @metadata = extract_metadata
+    end
+
+    # Fetch the Documents in this collection.
+    # Defaults to an empty array if no documents have been read in.
+    #
+    # Returns an array of Jekyll::Document objects.
+    def docs
+      @docs ||= []
+    end
+
+    # Override of normal respond_to? to match method_missing's logic for
+    # looking in @data.
+    def respond_to_missing?(method, include_private = false)
+      docs.respond_to?(method.to_sym, include_private) || super
+    end
+
+    # Override of method_missing to check in @data for the key.
+    def method_missing(method, *args, &blck)
+      if docs.respond_to?(method.to_sym)
+        Jekyll.logger.warn "Deprecation:",
+                           "#{label}.#{method} should be changed to #{label}.docs.#{method}."
+        Jekyll.logger.warn "", "Called by #{caller(0..0)}."
+        docs.public_send(method.to_sym, *args, &blck)
+      else
+        super
+      end
+    end
+
+    # Fetch the static files in this collection.
+    # Defaults to an empty array if no static files have been read in.
+    #
+    # Returns an array of Jekyll::StaticFile objects.
+    def files
+      @files ||= []
+    end
+
+    # Read the allowed documents into the collection's array of docs.
+    #
+    # Returns the sorted array of docs.
+    def read
+      filtered_entries.each do |file_path|
+        full_path = collection_dir(file_path)
+        next if File.directory?(full_path)
+
+        if Utils.has_yaml_header? full_path
+          read_document(full_path)
+        else
+          read_static_file(file_path, full_path)
+        end
+      end
+      sort_docs!
+    end
+
+    # All the entries in this collection.
+    #
+    # Returns an Array of file paths to the documents in this collection
+    #   relative to the collection's directory
+    def entries
+      return [] unless exists?
+
+      @entries ||= begin
+        collection_dir_slash = "#{collection_dir}/"
+        Utils.safe_glob(collection_dir, ["**", "*"], File::FNM_DOTMATCH).map do |entry|
+          entry[collection_dir_slash] = ""
+          entry
+        end
+      end
+    end
+
+    # Filtered version of the entries in this collection.
+    # See `Jekyll::EntryFilter#filter` for more information.
+    #
+    # Returns a list of filtered entry paths.
+    def filtered_entries
+      return [] unless exists?
+
+      @filtered_entries ||=
+        Dir.chdir(directory) do
+          entry_filter.filter(entries).reject do |f|
+            path = collection_dir(f)
+            File.directory?(path) || entry_filter.symlink?(f)
+          end
+        end
+    end
+
+    # The directory for this Collection, relative to the site source or the directory
+    # containing the collection.
+    #
+    # Returns a String containing the directory name where the collection
+    #   is stored on the filesystem.
+    def relative_directory
+      @relative_directory ||= "_#{label}"
+    end
+
+    # The full path to the directory containing the collection.
+    #
+    # Returns a String containing th directory name where the collection
+    #   is stored on the filesystem.
+    def directory
+      @directory ||= site.in_source_dir(
+        File.join(container, relative_directory)
+      )
+    end
+
+    # The full path to the directory containing the collection, with
+    #   optional subpaths.
+    #
+    # *files - (optional) any other path pieces relative to the
+    #           directory to append to the path
+    #
+    # Returns a String containing th directory name where the collection
+    #   is stored on the filesystem.
+    def collection_dir(*files)
+      return directory if files.empty?
+
+      site.in_source_dir(container, relative_directory, *files)
+    end
+
+    # Checks whether the directory "exists" for this collection.
+    # The directory must exist on the filesystem and must not be a symlink
+    #   if in safe mode.
+    #
+    # Returns false if the directory doesn't exist or if it's a symlink
+    #   and we're in safe mode.
+    def exists?
+      File.directory?(directory) && !entry_filter.symlink?(directory)
+    end
+
+    # The entry filter for this collection.
+    # Creates an instance of Jekyll::EntryFilter.
+    #
+    # Returns the instance of Jekyll::EntryFilter for this collection.
+    def entry_filter
+      @entry_filter ||= Jekyll::EntryFilter.new(site, relative_directory)
+    end
+
+    # An inspect string.
+    #
+    # Returns the inspect string
+    def inspect
+      "#<#{self.class} @label=#{label} docs=#{docs}>"
+    end
+
+    # Produce a sanitized label name
+    # Label names may not contain anything but alphanumeric characters,
+    #   underscores, and hyphens.
+    #
+    # label - the possibly-unsafe label
+    #
+    # Returns a sanitized version of the label.
+    def sanitize_label(label)
+      label.gsub(%r![^a-z0-9_\-.]!i, "")
+    end
+
+    # Produce a representation of this Collection for use in Liquid.
+    # Exposes two attributes:
+    #   - label
+    #   - docs
+    #
+    # Returns a representation of this collection for use in Liquid.
+    def to_liquid
+      Drops::CollectionDrop.new self
+    end
+
+    # Whether the collection's documents ought to be written as individual
+    #   files in the output.
+    #
+    # Returns true if the 'write' metadata is true, false otherwise.
+    def write?
+      !!metadata.fetch("output", false)
+    end
+
+    # The URL template to render collection's documents at.
+    #
+    # Returns the URL template to render collection's documents at.
+    def url_template
+      @url_template ||= metadata.fetch("permalink") do
+        Utils.add_permalink_suffix("/:collection/:path", site.permalink_style)
+      end
+    end
+
+    # Extract options for this collection from the site configuration.
+    #
+    # Returns the metadata for this collection
+    def extract_metadata
+      if site.config["collections"].is_a?(Hash)
+        site.config["collections"][label] || {}
+      else
+        {}
+      end
+    end
+
+    private
+
+    def container
+      @container ||= site.config["collections_dir"]
+    end
+
+    def read_document(full_path)
+      doc = Document.new(full_path, :site => site, :collection => self)
+      doc.read
+      docs << doc if site.unpublished || doc.published?
+    end
+
+    def sort_docs!
+      if metadata["order"].is_a?(Array)
+        rearrange_docs!
+      elsif metadata["sort_by"].is_a?(String)
+        sort_docs_by_key!
+      else
+        docs.sort!
+      end
+    end
+
+    # A custom sort function based on Schwartzian transform
+    # Refer https://byparker.com/blog/2017/schwartzian-transform-faster-sorting/ for details
+    def sort_docs_by_key!
+      meta_key = metadata["sort_by"]
+      # Modify `docs` array to cache document's property along with the Document instance
+      docs.map! { |doc| [doc.data[meta_key], doc] }.sort! do |apples, olives|
+        order = determine_sort_order(meta_key, apples, olives)
+
+        # Fall back to `Document#<=>` if the properties were equal or were non-sortable
+        # Otherwise continue with current sort-order
+        if order.nil? || order.zero?
+          apples[-1] <=> olives[-1]
+        else
+          order
+        end
+
+        # Finally restore the `docs` array with just the Document objects themselves
+      end.map!(&:last)
+    end
+
+    def determine_sort_order(sort_key, apples, olives)
+      apple_property, apple_document = apples
+      olive_property, olive_document = olives
+
+      if apple_property.nil? && !olive_property.nil?
+        order_with_warning(sort_key, apple_document, 1)
+      elsif !apple_property.nil? && olive_property.nil?
+        order_with_warning(sort_key, olive_document, -1)
+      else
+        apple_property <=> olive_property
+      end
+    end
+
+    def order_with_warning(sort_key, document, order)
+      Jekyll.logger.warn "Sort warning:", "'#{sort_key}' not defined in #{document.relative_path}"
+      order
+    end
+
+    # Rearrange documents within the `docs` array as listed in the `metadata["order"]` array.
+    #
+    # Involves converting the two arrays into hashes based on relative_paths as keys first, then
+    # merging them to remove duplicates and finally retrieving the Document instances from the
+    # merged array.
+    def rearrange_docs!
+      docs_table   = {}
+      custom_order = {}
+
+      # pre-sort to normalize default array across platforms and then proceed to create a Hash
+      # from that sorted array.
+      docs.sort.each do |doc|
+        docs_table[doc.relative_path] = doc
+      end
+
+      metadata["order"].each do |entry|
+        custom_order[File.join(relative_directory, entry)] = nil
+      end
+
+      result = Jekyll::Utils.deep_merge_hashes(custom_order, docs_table).values
+      result.compact!
+      self.docs = result
+    end
+
+    def read_static_file(file_path, full_path)
+      relative_dir = Jekyll.sanitized_path(
+        relative_directory,
+        File.dirname(file_path)
+      ).chomp("/.")
+
+      files << StaticFile.new(
+        site,
+        site.source,
+        relative_dir,
+        File.basename(full_path),
+        self
+      )
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/command.rb

@@ -0,0 +1,105 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Command
+    class << self
+      # A list of subclasses of Jekyll::Command
+      def subclasses
+        @subclasses ||= []
+      end
+
+      # Keep a list of subclasses of Jekyll::Command every time it's inherited
+      # Called automatically.
+      #
+      # base - the subclass
+      #
+      # Returns nothing
+      def inherited(base)
+        subclasses << base
+        super(base)
+      end
+
+      # Run Site#process and catch errors
+      #
+      # site - the Jekyll::Site object
+      #
+      # Returns nothing
+      def process_site(site)
+        site.process
+      rescue Jekyll::Errors::FatalException => e
+        Jekyll.logger.error "ERROR:", "YOUR SITE COULD NOT BE BUILT:"
+        Jekyll.logger.error "", "------------------------------------"
+        Jekyll.logger.error "", e.message
+        exit(1)
+      end
+
+      # Create a full Jekyll configuration with the options passed in as overrides
+      #
+      # options - the configuration overrides
+      #
+      # Returns a full Jekyll configuration
+      def configuration_from_options(options)
+        return options if options.is_a?(Jekyll::Configuration)
+
+        Jekyll.configuration(options)
+      end
+
+      # Add common options to a command for building configuration
+      #
+      # cmd - the Jekyll::Command to add these options to
+      #
+      # Returns nothing
+      # rubocop:disable Metrics/MethodLength
+      def add_build_options(cmd)
+        cmd.option "config", "--config CONFIG_FILE[,CONFIG_FILE2,...]",
+                   Array, "Custom configuration file"
+        cmd.option "destination", "-d", "--destination DESTINATION",
+                   "The current folder will be generated into DESTINATION"
+        cmd.option "source", "-s", "--source SOURCE", "Custom source directory"
+        cmd.option "future", "--future", "Publishes posts with a future date"
+        cmd.option "limit_posts", "--limit_posts MAX_POSTS", Integer,
+                   "Limits the number of posts to parse and publish"
+        cmd.option "watch", "-w", "--[no-]watch", "Watch for changes and rebuild"
+        cmd.option "baseurl", "-b", "--baseurl URL",
+                   "Serve the website from the given base URL"
+        cmd.option "force_polling", "--force_polling", "Force watch to use polling"
+        cmd.option "lsi", "--lsi", "Use LSI for improved related posts"
+        cmd.option "show_drafts", "-D", "--drafts", "Render posts in the _drafts folder"
+        cmd.option "unpublished", "--unpublished",
+                   "Render posts that were marked as unpublished"
+        cmd.option "disable_disk_cache", "--disable-disk-cache",
+                   "Disable caching to disk in non-safe mode"
+        cmd.option "quiet", "-q", "--quiet", "Silence output."
+        cmd.option "verbose", "-V", "--verbose", "Print verbose output."
+        cmd.option "incremental", "-I", "--incremental", "Enable incremental rebuild."
+        cmd.option "strict_front_matter", "--strict_front_matter",
+                   "Fail if errors are present in front matter"
+      end
+      # rubocop:enable Metrics/MethodLength
+
+      # Run ::process method in a given set of Jekyll::Command subclasses and suggest
+      # re-running the associated command with --trace switch to obtain any additional
+      # information or backtrace regarding the encountered Exception.
+      #
+      # cmd     - the Jekyll::Command to be handled
+      # options - configuration overrides
+      # klass   - an array of Jekyll::Command subclasses associated with the command
+      #
+      # Note that all exceptions are rescued..
+      # rubocop: disable Lint/RescueException
+      def process_with_graceful_fail(cmd, options, *klass)
+        klass.each { |k| k.process(options) if k.respond_to?(:process) }
+      rescue Exception => e
+        raise e if cmd.trace
+
+        msg = " Please append `--trace` to the `#{cmd.name}` command "
+        dashes = "-" * msg.length
+        Jekyll.logger.error "", dashes
+        Jekyll.logger.error "Jekyll #{Jekyll::VERSION} ", msg
+        Jekyll.logger.error "", " for any additional information or backtrace. "
+        Jekyll.logger.abort_with "", dashes
+      end
+      # rubocop: enable Lint/RescueException
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/build.rb

@@ -0,0 +1,93 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Commands
+    class Build < Command
+      class << self
+        # Create the Mercenary command for the Jekyll CLI for this Command
+        def init_with_program(prog)
+          prog.command(:build) do |c|
+            c.syntax      "build [options]"
+            c.description "Build your site"
+            c.alias :b
+
+            add_build_options(c)
+
+            c.action do |_, options|
+              options["serving"] = false
+              process_with_graceful_fail(c, options, self)
+            end
+          end
+        end
+
+        # Build your jekyll site
+        # Continuously watch if `watch` is set to true in the config.
+        def process(options)
+          # Adjust verbosity quickly
+          Jekyll.logger.adjust_verbosity(options)
+
+          options = configuration_from_options(options)
+          site = Jekyll::Site.new(options)
+
+          if options.fetch("skip_initial_build", false)
+            Jekyll.logger.warn "Build Warning:", "Skipping the initial build." \
+                               " This may result in an out-of-date site."
+          else
+            build(site, options)
+          end
+
+          if options.fetch("detach", false)
+            Jekyll.logger.info "Auto-regeneration:",
+                               "disabled when running server detached."
+          elsif options.fetch("watch", false)
+            watch(site, options)
+          else
+            Jekyll.logger.info "Auto-regeneration:", "disabled. Use --watch to enable."
+          end
+        end
+
+        # Build your Jekyll site.
+        #
+        # site - the Jekyll::Site instance to build
+        # options - A Hash of options passed to the command
+        #
+        # Returns nothing.
+        def build(site, options)
+          t = Time.now
+          source      = File.expand_path(options["source"])
+          destination = File.expand_path(options["destination"])
+          incremental = options["incremental"]
+          Jekyll.logger.info "Source:", source
+          Jekyll.logger.info "Destination:", destination
+          Jekyll.logger.info "Incremental build:",
+                             (incremental ? "enabled" : "disabled. Enable with --incremental")
+          Jekyll.logger.info "Generating..."
+          process_site(site)
+          Jekyll.logger.info "", "done in #{(Time.now - t).round(3)} seconds."
+        end
+
+        # Private: Watch for file changes and rebuild the site.
+        #
+        # site - A Jekyll::Site instance
+        # options - A Hash of options passed to the command
+        #
+        # Returns nothing.
+        def watch(site, options)
+          # Warn Windows users that they might need to upgrade.
+          if Utils::Platforms.bash_on_windows?
+            Jekyll.logger.warn "",
+                               "Auto-regeneration may not work on some Windows versions."
+            Jekyll.logger.warn "",
+                               "Please see: https://github.com/Microsoft/BashOnWindows/issues/216"
+            Jekyll.logger.warn "",
+                               "If it does not work, please upgrade Bash on Windows or "\
+                               "run Jekyll with --no-watch."
+          end
+
+          External.require_with_graceful_fail "jekyll-watch"
+          Jekyll::Watcher.watch(options, site)
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/clean.rb

@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Commands
+    class Clean < Command
+      class << self
+        def init_with_program(prog)
+          prog.command(:clean) do |c|
+            c.syntax "clean [subcommand]"
+            c.description "Clean the site " \
+                  "(removes site output and metadata file) without building."
+
+            add_build_options(c)
+
+            c.action do |_, options|
+              Jekyll::Commands::Clean.process(options)
+            end
+          end
+        end
+
+        def process(options)
+          options = configuration_from_options(options)
+          destination = options["destination"]
+          metadata_file = File.join(options["source"], ".jekyll-metadata")
+          cache_dir = File.join(options["source"], options["cache_dir"])
+          sass_cache = ".sass-cache"
+
+          remove(destination, :checker_func => :directory?)
+          remove(metadata_file, :checker_func => :file?)
+          remove(cache_dir, :checker_func => :directory?)
+          remove(sass_cache, :checker_func => :directory?)
+        end
+
+        def remove(filename, checker_func: :file?)
+          if File.public_send(checker_func, filename)
+            Jekyll.logger.info "Cleaner:", "Removing #{filename}..."
+            FileUtils.rm_rf(filename)
+          else
+            Jekyll.logger.info "Cleaner:", "Nothing to do for #{filename}."
+          end
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/doctor.rb

@@ -0,0 +1,177 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Commands
+    class Doctor < Command
+      class << self
+        def init_with_program(prog)
+          prog.command(:doctor) do |c|
+            c.syntax "doctor"
+            c.description "Search site and print specific deprecation warnings"
+            c.alias(:hyde)
+
+            c.option "config", "--config CONFIG_FILE[,CONFIG_FILE2,...]", Array,
+                     "Custom configuration file"
+
+            c.action do |_, options|
+              Jekyll::Commands::Doctor.process(options)
+            end
+          end
+        end
+
+        def process(options)
+          site = Jekyll::Site.new(configuration_from_options(options))
+          site.reset
+          site.read
+          site.generate
+
+          if healthy?(site)
+            Jekyll.logger.info "Your test results", "are in. Everything looks fine."
+          else
+            abort
+          end
+        end
+
+        def healthy?(site)
+          [
+            fsnotify_buggy?(site),
+            !deprecated_relative_permalinks(site),
+            !conflicting_urls(site),
+            !urls_only_differ_by_case(site),
+            proper_site_url?(site),
+            properly_gathered_posts?(site),
+          ].all?
+        end
+
+        def properly_gathered_posts?(site)
+          return true if site.config["collections_dir"].empty?
+
+          posts_at_root = site.in_source_dir("_posts")
+          return true unless File.directory?(posts_at_root)
+
+          Jekyll.logger.warn "Warning:",
+                             "Detected '_posts' directory outside custom `collections_dir`!"
+          Jekyll.logger.warn "",
+                             "Please move '#{posts_at_root}' into the custom directory at " \
+            "'#{site.in_source_dir(site.config["collections_dir"])}'"
+          false
+        end
+
+        def deprecated_relative_permalinks(site)
+          if site.config["relative_permalinks"]
+            Jekyll::Deprecator.deprecation_message "Your site still uses relative permalinks," \
+                                                   " which was removed in Jekyll v3.0.0."
+            true
+          end
+        end
+
+        def conflicting_urls(site)
+          conflicting_urls = false
+          destination_map(site).each do |dest, paths|
+            next unless paths.size > 1
+
+            conflicting_urls = true
+            Jekyll.logger.warn "Conflict:",
+                               "The following destination is shared by multiple files."
+            Jekyll.logger.warn "", "The written file may end up with unexpected contents."
+            Jekyll.logger.warn "", dest.to_s.cyan
+            paths.each { |path| Jekyll.logger.warn "", " - #{path}" }
+            Jekyll.logger.warn ""
+          end
+          conflicting_urls
+        end
+
+        def fsnotify_buggy?(_site)
+          return true unless Utils::Platforms.osx?
+
+          if Dir.pwd != `pwd`.strip
+            Jekyll.logger.error <<~STR
+              We have detected that there might be trouble using fsevent on your
+              operating system, you can read https://github.com/thibaudgg/rb-fsevent/wiki/no-fsevents-fired-(OSX-bug)
+              for possible work arounds or you can work around it immediately
+              with `--force-polling`.
+            STR
+
+            false
+          end
+
+          true
+        end
+
+        def urls_only_differ_by_case(site)
+          urls_only_differ_by_case = false
+          urls = case_insensitive_urls(site.pages + site.docs_to_write, site.dest)
+          urls.each_value do |real_urls|
+            next unless real_urls.uniq.size > 1
+
+            urls_only_differ_by_case = true
+            Jekyll.logger.warn "Warning:", "The following URLs only differ" \
+              " by case. On a case-insensitive file system one of the URLs" \
+              " will be overwritten by the other: #{real_urls.join(", ")}"
+          end
+          urls_only_differ_by_case
+        end
+
+        def proper_site_url?(site)
+          url = site.config["url"]
+          [
+            url_exists?(url),
+            url_valid?(url),
+            url_absolute(url),
+          ].all?
+        end
+
+        private
+
+        def destination_map(site)
+          {}.tap do |result|
+            site.each_site_file do |thing|
+              next if allow_used_permalink?(thing)
+
+              dest_path = thing.destination(site.dest)
+              (result[dest_path] ||= []) << thing.path
+            end
+          end
+        end
+
+        def allow_used_permalink?(item)
+          defined?(JekyllRedirectFrom) && item.is_a?(JekyllRedirectFrom::RedirectPage)
+        end
+
+        def case_insensitive_urls(things, destination)
+          things.each_with_object({}) do |thing, memo|
+            dest = thing.destination(destination)
+            (memo[dest.downcase] ||= []) << dest
+          end
+        end
+
+        def url_exists?(url)
+          return true unless url.nil? || url.empty?
+
+          Jekyll.logger.warn "Warning:", "You didn't set an URL in the config file, "\
+              "you may encounter problems with some plugins."
+          false
+        end
+
+        def url_valid?(url)
+          Addressable::URI.parse(url)
+          true
+        # Addressable::URI#parse only raises a TypeError
+        # https://git.io/vFfbx
+        rescue TypeError
+          Jekyll.logger.warn "Warning:", "The site URL does not seem to be valid, "\
+              "check the value of `url` in your config file."
+          false
+        end
+
+        def url_absolute(url)
+          return true if url.is_a?(String) && Addressable::URI.parse(url).absolute?
+
+          Jekyll.logger.warn "Warning:", "Your site URL does not seem to be absolute, "\
+              "check the value of `url` in your config file."
+          false
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/help.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Commands
+    class Help < Command
+      class << self
+        def init_with_program(prog)
+          prog.command(:help) do |c|
+            c.syntax "help [subcommand]"
+            c.description "Show the help message, optionally for a given subcommand."
+
+            c.action do |args, _|
+              cmd = (args.first || "").to_sym
+              if args.empty?
+                Jekyll.logger.info prog.to_s
+              elsif prog.has_command? cmd
+                Jekyll.logger.info prog.commands[cmd].to_s
+              else
+                invalid_command(prog, cmd)
+                abort
+              end
+            end
+          end
+        end
+
+        def invalid_command(prog, cmd)
+          Jekyll.logger.error "Error:",
+                              "Hmm... we don't know what the '#{cmd}' command is."
+          Jekyll.logger.info  "Valid commands:", prog.commands.keys.join(", ")
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/new.rb

@@ -0,0 +1,169 @@
+# frozen_string_literal: true
+
+require "erb"
+
+module Jekyll
+  module Commands
+    class New < Command
+      class << self
+        def init_with_program(prog)
+          prog.command(:new) do |c|
+            c.syntax "new PATH"
+            c.description "Creates a new Jekyll site scaffold in PATH"
+
+            c.option "force", "--force", "Force creation even if PATH already exists"
+            c.option "blank", "--blank", "Creates scaffolding but with empty files"
+            c.option "skip-bundle", "--skip-bundle", "Skip 'bundle install'"
+
+            c.action do |args, options|
+              Jekyll::Commands::New.process(args, options)
+            end
+          end
+        end
+
+        def process(args, options = {})
+          raise ArgumentError, "You must specify a path." if args.empty?
+
+          new_blog_path = File.expand_path(args.join(" "), Dir.pwd)
+          FileUtils.mkdir_p new_blog_path
+          if preserve_source_location?(new_blog_path, options)
+            Jekyll.logger.error "Conflict:", "#{new_blog_path} exists and is not empty."
+            Jekyll.logger.abort_with "", "Ensure #{new_blog_path} is empty or else " \
+                      "try again with `--force` to proceed and overwrite any files."
+          end
+
+          if options["blank"]
+            create_blank_site new_blog_path
+          else
+            create_site new_blog_path
+          end
+
+          after_install(new_blog_path, options)
+        end
+
+        def blank_template
+          File.expand_path("../../blank_template", __dir__)
+        end
+
+        def create_blank_site(path)
+          FileUtils.cp_r blank_template + "/.", path
+          FileUtils.chmod_R "u+w", path
+
+          Dir.chdir(path) do
+            FileUtils.mkdir(%w(_data _drafts _includes _posts))
+          end
+        end
+
+        def scaffold_post_content
+          ERB.new(File.read(File.expand_path(scaffold_path, site_template))).result
+        end
+
+        # Internal: Gets the filename of the sample post to be created
+        #
+        # Returns the filename of the sample post, as a String
+        def initialized_post_name
+          "_posts/#{Time.now.strftime("%Y-%m-%d")}-welcome-to-jekyll.markdown"
+        end
+
+        private
+
+        def gemfile_contents
+          <<~RUBY
+            source "https://rubygems.org"
+            # Hello! This is where you manage which Jekyll version is used to run.
+            # When you want to use a different version, change it below, save the
+            # file and run `bundle install`. Run Jekyll with `bundle exec`, like so:
+            #
+            #     bundle exec jekyll serve
+            #
+            # This will help ensure the proper Jekyll version is running.
+            # Happy Jekylling!
+            gem "jekyll", "~> #{Jekyll::VERSION}"
+            # This is the default theme for new Jekyll sites. You may change this to anything you like.
+            gem "minima", "~> 2.5"
+            # If you want to use GitHub Pages, remove the "gem "jekyll"" above and
+            # uncomment the line below. To upgrade, run `bundle update github-pages`.
+            # gem "github-pages", group: :jekyll_plugins
+            # If you have any plugins, put them here!
+            group :jekyll_plugins do
+              gem "jekyll-feed", "~> 0.12"
+            end
+
+            # Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem
+            # and associated library.
+            platforms :mingw, :x64_mingw, :mswin, :jruby do
+              gem "tzinfo", "~> 1.2"
+              gem "tzinfo-data"
+            end
+
+            # Performance-booster for watching directories on Windows
+            gem "wdm", "~> 0.1.1", :platforms => [:mingw, :x64_mingw, :mswin]
+
+          RUBY
+        end
+
+        def create_site(new_blog_path)
+          create_sample_files new_blog_path
+
+          File.open(File.expand_path(initialized_post_name, new_blog_path), "w") do |f|
+            f.write(scaffold_post_content)
+          end
+
+          File.open(File.expand_path("Gemfile", new_blog_path), "w") do |f|
+            f.write(gemfile_contents)
+          end
+        end
+
+        def preserve_source_location?(path, options)
+          !options["force"] && !Dir["#{path}/**/*"].empty?
+        end
+
+        def create_sample_files(path)
+          FileUtils.cp_r site_template + "/.", path
+          FileUtils.chmod_R "u+w", path
+          FileUtils.rm File.expand_path(scaffold_path, path)
+        end
+
+        def site_template
+          File.expand_path("../../site_template", __dir__)
+        end
+
+        def scaffold_path
+          "_posts/0000-00-00-welcome-to-jekyll.markdown.erb"
+        end
+
+        # After a new blog has been created, print a success notification and
+        # then automatically execute bundle install from within the new blog dir
+        # unless the user opts to generate a blank blog or skip 'bundle install'.
+
+        def after_install(path, options = {})
+          unless options["blank"] || options["skip-bundle"]
+            begin
+              require "bundler"
+              bundle_install path
+            rescue LoadError
+              Jekyll.logger.info "Could not load Bundler. Bundle install skipped."
+            end
+          end
+
+          Jekyll.logger.info "New jekyll site installed in #{path.cyan}."
+          Jekyll.logger.info "Bundle install skipped." if options["skip-bundle"]
+        end
+
+        def bundle_install(path)
+          Jekyll.logger.info "Running bundle install in #{path.cyan}..."
+          Dir.chdir(path) do
+            exe = Gem.bin_path("bundler", "bundle")
+            process, output = Jekyll::Utils::Exec.run("ruby", exe, "install")
+
+            output.to_s.each_line do |line|
+              Jekyll.logger.info("Bundler:".green, line.strip) unless line.to_s.empty?
+            end
+
+            raise SystemExit unless process.success?
+          end
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/new_theme.rb

@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+require "erb"
+
+module Jekyll
+  module Commands
+    class NewTheme < Jekyll::Command
+      class << self
+        def init_with_program(prog)
+          prog.command(:"new-theme") do |c|
+            c.syntax "new-theme NAME"
+            c.description "Creates a new Jekyll theme scaffold"
+            c.option "code_of_conduct", \
+                     "-c", "--code-of-conduct", \
+                     "Include a Code of Conduct. (defaults to false)"
+
+            c.action do |args, opts|
+              Jekyll::Commands::NewTheme.process(args, opts)
+            end
+          end
+        end
+
+        def process(args, opts)
+          if !args || args.empty?
+            raise Jekyll::Errors::InvalidThemeName, "You must specify a theme name."
+          end
+
+          new_theme_name = args.join("_")
+          theme = Jekyll::ThemeBuilder.new(new_theme_name, opts)
+          Jekyll.logger.abort_with "Conflict:", "#{theme.path} already exists." if theme.path.exist?
+
+          theme.create!
+          Jekyll.logger.info "Your new Jekyll theme, #{theme.name.cyan}," \
+                             " is ready for you in #{theme.path.to_s.cyan}!"
+          Jekyll.logger.info "For help getting started, read #{theme.path}/README.md."
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/serve.rb

@@ -0,0 +1,365 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Commands
+    class Serve < Command
+      # Similar to the pattern in Utils::ThreadEvent except we are maintaining the
+      # state of @running instead of just signaling an event.  We have to maintain this
+      # state since Serve is just called via class methods instead of an instance
+      # being created each time.
+      @mutex = Mutex.new
+      @run_cond = ConditionVariable.new
+      @running = false
+
+      class << self
+        COMMAND_OPTIONS = {
+          "ssl_cert"             => ["--ssl-cert [CERT]", "X.509 (SSL) certificate."],
+          "host"                 => ["host", "-H", "--host [HOST]", "Host to bind to"],
+          "open_url"             => ["-o", "--open-url", "Launch your site in a browser"],
+          "detach"               => ["-B", "--detach",
+                                     "Run the server in the background",],
+          "ssl_key"              => ["--ssl-key [KEY]", "X.509 (SSL) Private Key."],
+          "port"                 => ["-P", "--port [PORT]", "Port to listen on"],
+          "show_dir_listing"     => ["--show-dir-listing",
+                                     "Show a directory listing instead of loading" \
+                                     " your index file.",],
+          "skip_initial_build"   => ["skip_initial_build", "--skip-initial-build",
+                                     "Skips the initial site build which occurs before" \
+                                     " the server is started.",],
+          "livereload"           => ["-l", "--livereload",
+                                     "Use LiveReload to automatically refresh browsers",],
+          "livereload_ignore"    => ["--livereload-ignore ignore GLOB1[,GLOB2[,...]]",
+                                     Array,
+                                     "Files for LiveReload to ignore. " \
+                                     "Remember to quote the values so your shell " \
+                                     "won't expand them",],
+          "livereload_min_delay" => ["--livereload-min-delay [SECONDS]",
+                                     "Minimum reload delay",],
+          "livereload_max_delay" => ["--livereload-max-delay [SECONDS]",
+                                     "Maximum reload delay",],
+          "livereload_port"      => ["--livereload-port [PORT]", Integer,
+                                     "Port for LiveReload to listen on",],
+        }.freeze
+
+        DIRECTORY_INDEX = %w(
+          index.htm
+          index.html
+          index.rhtml
+          index.xht
+          index.xhtml
+          index.cgi
+          index.xml
+          index.json
+        ).freeze
+
+        LIVERELOAD_PORT = 35_729
+        LIVERELOAD_DIR = File.join(__dir__, "serve", "livereload_assets")
+
+        attr_reader :mutex, :run_cond, :running
+        alias_method :running?, :running
+
+        def init_with_program(prog)
+          prog.command(:serve) do |cmd|
+            cmd.description "Serve your site locally"
+            cmd.syntax "serve [options]"
+            cmd.alias :server
+            cmd.alias :s
+
+            add_build_options(cmd)
+            COMMAND_OPTIONS.each do |key, val|
+              cmd.option key, *val
+            end
+
+            cmd.action do |_, opts|
+              opts["livereload_port"] ||= LIVERELOAD_PORT
+              opts["serving"] = true
+              opts["watch"]   = true unless opts.key?("watch")
+
+              # Set the reactor to nil so any old reactor will be GCed.
+              # We can't unregister a hook so while running tests we don't want to
+              # inadvertently keep using a reactor created by a previous test.
+              @reload_reactor = nil
+
+              config = configuration_from_options(opts)
+              config["url"] = default_url(config) if Jekyll.env == "development"
+
+              process_with_graceful_fail(cmd, config, Build, Serve)
+            end
+          end
+        end
+
+        #
+
+        def process(opts)
+          opts = configuration_from_options(opts)
+          destination = opts["destination"]
+          if opts["livereload"]
+            validate_options(opts)
+            register_reload_hooks(opts)
+          end
+          setup(destination)
+
+          start_up_webrick(opts, destination)
+        end
+
+        def shutdown
+          @server.shutdown if running?
+        end
+
+        # Perform logical validation of CLI options
+
+        private
+
+        def validate_options(opts)
+          if opts["livereload"]
+            if opts["detach"]
+              Jekyll.logger.warn "Warning:", "--detach and --livereload are mutually exclusive." \
+                                 " Choosing --livereload"
+              opts["detach"] = false
+            end
+            if opts["ssl_cert"] || opts["ssl_key"]
+              # This is not technically true.  LiveReload works fine over SSL, but
+              # EventMachine's SSL support in Windows requires building the gem's
+              # native extensions against OpenSSL and that proved to be a process
+              # so tedious that expecting users to do it is a non-starter.
+              Jekyll.logger.abort_with "Error:", "LiveReload does not support SSL"
+            end
+            unless opts["watch"]
+              # Using livereload logically implies you want to watch the files
+              opts["watch"] = true
+            end
+          elsif %w(livereload_min_delay
+                   livereload_max_delay
+                   livereload_ignore
+                   livereload_port).any? { |o| opts[o] }
+            Jekyll.logger.abort_with "--livereload-min-delay, "\
+               "--livereload-max-delay, --livereload-ignore, and "\
+               "--livereload-port require the --livereload option."
+          end
+        end
+
+        # rubocop:disable Metrics/AbcSize
+        def register_reload_hooks(opts)
+          require_relative "serve/live_reload_reactor"
+          @reload_reactor = LiveReloadReactor.new
+
+          Jekyll::Hooks.register(:site, :post_render) do |site|
+            regenerator = Jekyll::Regenerator.new(site)
+            @changed_pages = site.pages.select do |p|
+              regenerator.regenerate?(p)
+            end
+          end
+
+          # A note on ignoring files: LiveReload errs on the side of reloading when it
+          # comes to the message it gets.  If, for example, a page is ignored but a CSS
+          # file linked in the page isn't, the page will still be reloaded if the CSS
+          # file is contained in the message sent to LiveReload.  Additionally, the
+          # path matching is very loose so that a message to reload "/" will always
+          # lead the page to reload since every page starts with "/".
+          Jekyll::Hooks.register(:site, :post_write) do
+            if @changed_pages && @reload_reactor && @reload_reactor.running?
+              ignore, @changed_pages = @changed_pages.partition do |p|
+                Array(opts["livereload_ignore"]).any? do |filter|
+                  File.fnmatch(filter, Jekyll.sanitized_path(p.relative_path))
+                end
+              end
+              Jekyll.logger.debug "LiveReload:", "Ignoring #{ignore.map(&:relative_path)}"
+              @reload_reactor.reload(@changed_pages)
+            end
+            @changed_pages = nil
+          end
+        end
+        # rubocop:enable Metrics/AbcSize
+
+        # Do a base pre-setup of WEBRick so that everything is in place
+        # when we get ready to party, checking for an setting up an error page
+        # and making sure our destination exists.
+
+        def setup(destination)
+          require_relative "serve/servlet"
+
+          FileUtils.mkdir_p(destination)
+          if File.exist?(File.join(destination, "404.html"))
+            WEBrick::HTTPResponse.class_eval do
+              def create_error_page
+                @header["Content-Type"] = "text/html; charset=UTF-8"
+                @body = IO.read(File.join(@config[:DocumentRoot], "404.html"))
+              end
+            end
+          end
+        end
+
+        def webrick_opts(opts)
+          opts = {
+            :JekyllOptions      => opts,
+            :DoNotReverseLookup => true,
+            :MimeTypes          => mime_types,
+            :DocumentRoot       => opts["destination"],
+            :StartCallback      => start_callback(opts["detach"]),
+            :StopCallback       => stop_callback(opts["detach"]),
+            :BindAddress        => opts["host"],
+            :Port               => opts["port"],
+            :DirectoryIndex     => DIRECTORY_INDEX,
+          }
+
+          opts[:DirectoryIndex] = [] if opts[:JekyllOptions]["show_dir_listing"]
+
+          enable_ssl(opts)
+          enable_logging(opts)
+          opts
+        end
+
+        def start_up_webrick(opts, destination)
+          @reload_reactor.start(opts) if opts["livereload"]
+
+          @server = WEBrick::HTTPServer.new(webrick_opts(opts)).tap { |o| o.unmount("") }
+          @server.mount(opts["baseurl"].to_s, Servlet, destination, file_handler_opts)
+
+          Jekyll.logger.info "Server address:", server_address(@server, opts)
+          launch_browser @server, opts if opts["open_url"]
+          boot_or_detach @server, opts
+        end
+
+        # Recreate NondisclosureName under utf-8 circumstance
+        def file_handler_opts
+          WEBrick::Config::FileHandler.merge(
+            :FancyIndexing     => true,
+            :NondisclosureName => [
+              ".ht*", "~*",
+            ]
+          )
+        end
+
+        def server_address(server, options = {})
+          format_url(
+            server.config[:SSLEnable],
+            server.config[:BindAddress],
+            server.config[:Port],
+            options["baseurl"]
+          )
+        end
+
+        def format_url(ssl_enabled, address, port, baseurl = nil)
+          format("%<prefix>s://%<address>s:%<port>i%<baseurl>s",
+                 :prefix  => ssl_enabled ? "https" : "http",
+                 :address => address,
+                 :port    => port,
+                 :baseurl => baseurl ? "#{baseurl}/" : "")
+        end
+
+        def default_url(opts)
+          config = configuration_from_options(opts)
+          auth = config.values_at("host", "port").join(":")
+          return config["url"] if auth == "127.0.0.1:4000"
+
+          format_url(
+            config["ssl_cert"] && config["ssl_key"],
+            config["host"] == "127.0.0.1" ? "localhost" : config["host"],
+            config["port"]
+          )
+        end
+
+        def launch_browser(server, opts)
+          address = server_address(server, opts)
+          return system "start", address if Utils::Platforms.windows?
+          return system "xdg-open", address if Utils::Platforms.linux?
+          return system "open", address if Utils::Platforms.osx?
+
+          Jekyll.logger.error "Refusing to launch browser; " \
+            "Platform launcher unknown."
+        end
+
+        # Keep in our area with a thread or detach the server as requested
+        # by the user.  This method determines what we do based on what you
+        # ask us to do.
+        def boot_or_detach(server, opts)
+          if opts["detach"]
+            pid = Process.fork do
+              server.start
+            end
+
+            Process.detach(pid)
+            Jekyll.logger.info "Server detached with pid '#{pid}'.", \
+                               "Run `pkill -f jekyll' or `kill -9 #{pid}'" \
+                               " to stop the server."
+          else
+            t = Thread.new { server.start }
+            trap("INT") { server.shutdown }
+            t.join
+          end
+        end
+
+        # Make the stack verbose if the user requests it.
+        def enable_logging(opts)
+          opts[:AccessLog] = []
+          level = WEBrick::Log.const_get(opts[:JekyllOptions]["verbose"] ? :DEBUG : :WARN)
+          opts[:Logger] = WEBrick::Log.new($stdout, level)
+        end
+
+        # Add SSL to the stack if the user triggers --enable-ssl and they
+        # provide both types of certificates commonly needed.  Raise if they
+        # forget to add one of the certificates.
+        def enable_ssl(opts)
+          cert, key, src =
+            opts[:JekyllOptions].values_at("ssl_cert", "ssl_key", "source")
+
+          return if cert.nil? && key.nil?
+          raise "Missing --ssl_cert or --ssl_key. Both are required." unless cert && key
+
+          require "openssl"
+          require "webrick/https"
+
+          opts[:SSLCertificate] = OpenSSL::X509::Certificate.new(read_file(src, cert))
+          begin
+            opts[:SSLPrivateKey] = OpenSSL::PKey::RSA.new(read_file(src, key))
+          rescue StandardError
+            if defined?(OpenSSL::PKey::EC)
+              opts[:SSLPrivateKey] = OpenSSL::PKey::EC.new(read_file(src, key))
+            else
+              raise
+            end
+          end
+          opts[:SSLEnable] = true
+        end
+
+        def start_callback(detached)
+          unless detached
+            proc do
+              mutex.synchronize do
+                # Block until EventMachine reactor starts
+                @reload_reactor&.started_event&.wait
+                @running = true
+                Jekyll.logger.info("Server running...", "press ctrl-c to stop.")
+                @run_cond.broadcast
+              end
+            end
+          end
+        end
+
+        def stop_callback(detached)
+          unless detached
+            proc do
+              mutex.synchronize do
+                unless @reload_reactor.nil?
+                  @reload_reactor.stop
+                  @reload_reactor.stopped_event.wait
+                end
+                @running = false
+                @run_cond.broadcast
+              end
+            end
+          end
+        end
+
+        def mime_types
+          file = File.expand_path("../mime.types", __dir__)
+          WEBrick::HTTPUtils.load_mime_types(file)
+        end
+
+        def read_file(source_dir, file_path)
+          File.read(Jekyll.sanitized_path(source_dir, file_path))
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/serve/live_reload_reactor.rb

@@ -0,0 +1,122 @@
+# frozen_string_literal: true
+
+require "em-websocket"
+
+require_relative "websockets"
+
+module Jekyll
+  module Commands
+    class Serve
+      class LiveReloadReactor
+        attr_reader :started_event
+        attr_reader :stopped_event
+        attr_reader :thread
+
+        def initialize
+          @websockets = []
+          @connections_count = 0
+          @started_event = Utils::ThreadEvent.new
+          @stopped_event = Utils::ThreadEvent.new
+        end
+
+        def stop
+          # There is only one EventMachine instance per Ruby process so stopping
+          # it here will stop the reactor thread we have running.
+          EM.stop if EM.reactor_running?
+          Jekyll.logger.debug "LiveReload Server:", "halted"
+        end
+
+        def running?
+          EM.reactor_running?
+        end
+
+        def handle_websockets_event(websocket)
+          websocket.onopen { |handshake| connect(websocket, handshake) }
+          websocket.onclose { disconnect(websocket) }
+          websocket.onmessage { |msg| print_message(msg) }
+          websocket.onerror { |error| log_error(error) }
+        end
+
+        def start(opts)
+          @thread = Thread.new do
+            # Use epoll if the kernel supports it
+            EM.epoll
+            EM.run do
+              EM.error_handler { |e| log_error(e) }
+
+              EM.start_server(
+                opts["host"],
+                opts["livereload_port"],
+                HttpAwareConnection,
+                opts
+              ) do |ws|
+                handle_websockets_event(ws)
+              end
+
+              # Notify blocked threads that EventMachine has started or shutdown
+              EM.schedule { @started_event.set }
+              EM.add_shutdown_hook { @stopped_event.set }
+
+              Jekyll.logger.info "LiveReload address:",
+                                 "http://#{opts["host"]}:#{opts["livereload_port"]}"
+            end
+          end
+          @thread.abort_on_exception = true
+        end
+
+        # For a description of the protocol see
+        # http://feedback.livereload.com/knowledgebase/articles/86174-livereload-protocol
+        def reload(pages)
+          pages.each do |p|
+            json_message = JSON.dump(
+              :command => "reload",
+              :path    => p.url,
+              :liveCSS => true
+            )
+
+            Jekyll.logger.debug "LiveReload:", "Reloading #{p.url}"
+            Jekyll.logger.debug "", json_message
+            @websockets.each { |ws| ws.send(json_message) }
+          end
+        end
+
+        private
+
+        def connect(websocket, handshake)
+          @connections_count += 1
+          if @connections_count == 1
+            message = "Browser connected"
+            message += " over SSL/TLS" if handshake.secure?
+            Jekyll.logger.info "LiveReload:", message
+          end
+          websocket.send(
+            JSON.dump(
+              :command    => "hello",
+              :protocols  => ["http://livereload.com/protocols/official-7"],
+              :serverName => "jekyll"
+            )
+          )
+
+          @websockets << websocket
+        end
+
+        def disconnect(websocket)
+          @websockets.delete(websocket)
+        end
+
+        def print_message(json_message)
+          msg = JSON.parse(json_message)
+          # Not sure what the 'url' command even does in LiveReload.  The spec is silent
+          # on its purpose.
+          Jekyll.logger.info "LiveReload:", "Browser URL: #{msg["url"]}" if msg["command"] == "url"
+        end
+
+        def log_error(error)
+          Jekyll.logger.error "LiveReload experienced an error. " \
+            "Run with --trace for more information."
+          raise error
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/serve/servlet.rb

@@ -0,0 +1,202 @@
+# frozen_string_literal: true
+
+require "webrick"
+
+module Jekyll
+  module Commands
+    class Serve
+      # This class is used to determine if the Servlet should modify a served file
+      # to insert the LiveReload script tags
+      class SkipAnalyzer
+        BAD_USER_AGENTS = [%r!MSIE!].freeze
+
+        def self.skip_processing?(request, response, options)
+          new(request, response, options).skip_processing?
+        end
+
+        def initialize(request, response, options)
+          @options = options
+          @request = request
+          @response = response
+        end
+
+        def skip_processing?
+          !html? || chunked? || inline? || bad_browser?
+        end
+
+        def chunked?
+          @response["Transfer-Encoding"] == "chunked"
+        end
+
+        def inline?
+          @response["Content-Disposition"].to_s.start_with?("inline")
+        end
+
+        def bad_browser?
+          BAD_USER_AGENTS.any? { |pattern| pattern.match?(@request["User-Agent"]) }
+        end
+
+        def html?
+          @response["Content-Type"].to_s.include?("text/html")
+        end
+      end
+
+      # This class inserts the LiveReload script tags into HTML as it is served
+      class BodyProcessor
+        HEAD_TAG_REGEX = %r!<head>|<head[^(er)][^<]*>!.freeze
+
+        attr_reader :content_length, :new_body, :livereload_added
+
+        def initialize(body, options)
+          @body = body
+          @options = options
+          @processed = false
+        end
+
+        def processed?
+          @processed
+        end
+
+        # rubocop:disable Metrics/MethodLength
+        def process!
+          @new_body = []
+          # @body will usually be a File object but Strings occur in rare cases
+          if @body.respond_to?(:each)
+            begin
+              @body.each { |line| @new_body << line.to_s }
+            ensure
+              @body.close
+            end
+          else
+            @new_body = @body.lines
+          end
+
+          @content_length = 0
+          @livereload_added = false
+
+          @new_body.each do |line|
+            if !@livereload_added && line["<head"]
+              line.gsub!(HEAD_TAG_REGEX) do |match|
+                %(#{match}#{template.result(binding)})
+              end
+
+              @livereload_added = true
+            end
+
+            @content_length += line.bytesize
+            @processed = true
+          end
+          @new_body = @new_body.join
+        end
+        # rubocop:enable Metrics/MethodLength
+
+        def template
+          # Unclear what "snipver" does. Doc at
+          # https://github.com/livereload/livereload-js states that the recommended
+          # setting is 1.
+
+          # Complicated JavaScript to ensure that livereload.js is loaded from the
+          # same origin as the page.  Mostly useful for dealing with the browser's
+          # distinction between 'localhost' and 127.0.0.1
+          @template ||= ERB.new(<<~TEMPLATE)
+            <script>
+              document.write(
+                '<script src="http://' +
+                (location.host || 'localhost').split(':')[0] +
+                ':<%=@options["livereload_port"] %>/livereload.js?snipver=1<%= livereload_args %>"' +
+                '></' +
+                'script>');
+            </script>
+          TEMPLATE
+        end
+
+        def livereload_args
+          # XHTML standard requires ampersands to be encoded as entities when in
+          # attributes. See http://stackoverflow.com/a/2190292
+          src = ""
+          if @options["livereload_min_delay"]
+            src += "&amp;mindelay=#{@options["livereload_min_delay"]}"
+          end
+          if @options["livereload_max_delay"]
+            src += "&amp;maxdelay=#{@options["livereload_max_delay"]}"
+          end
+          src += "&amp;port=#{@options["livereload_port"]}" if @options["livereload_port"]
+          src
+        end
+      end
+
+      class Servlet < WEBrick::HTTPServlet::FileHandler
+        DEFAULTS = {
+          "Cache-Control" => "private, max-age=0, proxy-revalidate, " \
+            "no-store, no-cache, must-revalidate",
+        }.freeze
+
+        def initialize(server, root, callbacks)
+          # So we can access them easily.
+          @jekyll_opts = server.config[:JekyllOptions]
+          set_defaults
+          super
+        end
+
+        def search_index_file(req, res)
+          super ||
+            search_file(req, res, ".html") ||
+            search_file(req, res, ".xhtml")
+        end
+
+        # Add the ability to tap file.html the same way that Nginx does on our
+        # Docker images (or on GitHub Pages.) The difference is that we might end
+        # up with a different preference on which comes first.
+
+        def search_file(req, res, basename)
+          # /file.* > /file/index.html > /file.html
+          super ||
+            super(req, res, "#{basename}.html") ||
+            super(req, res, "#{basename}.xhtml")
+        end
+
+        # rubocop:disable Naming/MethodName
+        def do_GET(req, res)
+          rtn = super
+
+          if @jekyll_opts["livereload"]
+            return rtn if SkipAnalyzer.skip_processing?(req, res, @jekyll_opts)
+
+            processor = BodyProcessor.new(res.body, @jekyll_opts)
+            processor.process!
+            res.body = processor.new_body
+            res.content_length = processor.content_length.to_s
+
+            if processor.livereload_added
+              # Add a header to indicate that the page content has been modified
+              res["X-Rack-LiveReload"] = "1"
+            end
+          end
+
+          validate_and_ensure_charset(req, res)
+          res.header.merge!(@headers)
+          rtn
+        end
+        # rubocop:enable Naming/MethodName
+
+        private
+
+        def validate_and_ensure_charset(_req, res)
+          key = res.header.keys.grep(%r!content-type!i).first
+          typ = res.header[key]
+
+          unless %r!;\s*charset=!.match?(typ)
+            res.header[key] = "#{typ}; charset=#{@jekyll_opts["encoding"]}"
+          end
+        end
+
+        def set_defaults
+          hash_ = @jekyll_opts.fetch("webrick", {}).fetch("headers", {})
+          DEFAULTS.each_with_object(@headers = hash_) do |(key, val), hash|
+            hash[key] = val unless hash.key?(key)
+          end
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/commands/serve/websockets.rb

@@ -0,0 +1,81 @@
+# frozen_string_literal: true
+
+require "http/parser"
+
+module Jekyll
+  module Commands
+    class Serve
+      # The LiveReload protocol requires the server to serve livereload.js over HTTP
+      # despite the fact that the protocol itself uses WebSockets.  This custom connection
+      # class addresses the dual protocols that the server needs to understand.
+      class HttpAwareConnection < EventMachine::WebSocket::Connection
+        attr_reader :reload_body, :reload_size
+
+        def initialize(_opts)
+          # If EventMachine SSL support on Windows ever gets better, the code below will
+          # set up the reactor to handle SSL
+          #
+          # @ssl_enabled = opts["ssl_cert"] && opts["ssl_key"]
+          # if @ssl_enabled
+          #   em_opts[:tls_options] = {
+          #   :private_key_file => Jekyll.sanitized_path(opts["source"], opts["ssl_key"]),
+          #   :cert_chain_file  => Jekyll.sanitized_path(opts["source"], opts["ssl_cert"])
+          #   }
+          #   em_opts[:secure] = true
+          # end
+
+          # This is too noisy even for --verbose, but uncomment if you need it for
+          # a specific WebSockets issue.  Adding ?LR-verbose=true onto the URL will
+          # enable logging on the client side.
+          # em_opts[:debug] = true
+
+          em_opts = {}
+          super(em_opts)
+
+          reload_file = File.join(Serve.singleton_class::LIVERELOAD_DIR, "livereload.js")
+
+          @reload_body = File.read(reload_file)
+          @reload_size = @reload_body.bytesize
+        end
+
+        # rubocop:disable Metrics/MethodLength
+        def dispatch(data)
+          parser = Http::Parser.new
+          parser << data
+
+          # WebSockets requests will have a Connection: Upgrade header
+          if parser.http_method != "GET" || parser.upgrade?
+            super
+          elsif parser.request_url.start_with?("/livereload.js")
+            headers = [
+              "HTTP/1.1 200 OK",
+              "Content-Type: application/javascript",
+              "Content-Length: #{reload_size}",
+              "",
+              "",
+            ].join("\r\n")
+            send_data(headers)
+
+            # stream_file_data would free us from keeping livereload.js in memory
+            # but JRuby blocks on that call and never returns
+            send_data(reload_body)
+            close_connection_after_writing
+          else
+            body = "This port only serves livereload.js over HTTP.\n"
+            headers = [
+              "HTTP/1.1 400 Bad Request",
+              "Content-Type: text/plain",
+              "Content-Length: #{body.bytesize}",
+              "",
+              "",
+            ].join("\r\n")
+            send_data(headers)
+            send_data(body)
+            close_connection_after_writing
+          end
+        end
+        # rubocop:enable Metrics/MethodLength
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/configuration.rb

@@ -0,0 +1,313 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Configuration < Hash
+    # Default options. Overridden by values in _config.yml.
+    # Strings rather than symbols are used for compatibility with YAML.
+    DEFAULTS = {
+      # Where things are
+      "source"              => Dir.pwd,
+      "destination"         => File.join(Dir.pwd, "_site"),
+      "collections_dir"     => "",
+      "cache_dir"           => ".jekyll-cache",
+      "plugins_dir"         => "_plugins",
+      "layouts_dir"         => "_layouts",
+      "data_dir"            => "_data",
+      "includes_dir"        => "_includes",
+      "collections"         => {},
+
+      # Handling Reading
+      "safe"                => false,
+      "include"             => [".htaccess"],
+      "exclude"             => [],
+      "keep_files"          => [".git", ".svn"],
+      "encoding"            => "utf-8",
+      "markdown_ext"        => "markdown,mkdown,mkdn,mkd,md",
+      "strict_front_matter" => false,
+
+      # Filtering Content
+      "show_drafts"         => nil,
+      "limit_posts"         => 0,
+      "future"              => false,
+      "unpublished"         => false,
+
+      # Plugins
+      "whitelist"           => [],
+      "plugins"             => [],
+
+      # Conversion
+      "markdown"            => "kramdown",
+      "highlighter"         => "rouge",
+      "lsi"                 => false,
+      "excerpt_separator"   => "\n\n",
+      "incremental"         => false,
+
+      # Serving
+      "detach"              => false, # default to not detaching the server
+      "port"                => "4000",
+      "host"                => "127.0.0.1",
+      "baseurl"             => nil, # this mounts at /, i.e. no subdirectory
+      "show_dir_listing"    => false,
+
+      # Output Configuration
+      "permalink"           => "date",
+      "paginate_path"       => "/page:num",
+      "timezone"            => nil, # use the local timezone
+
+      "quiet"               => false,
+      "verbose"             => false,
+      "defaults"            => [],
+
+      "liquid"              => {
+        "error_mode"       => "warn",
+        "strict_filters"   => false,
+        "strict_variables" => false,
+      },
+
+      "kramdown"            => {
+        "auto_ids"      => true,
+        "toc_levels"    => (1..6).to_a,
+        "entity_output" => "as_char",
+        "smart_quotes"  => "lsquo,rsquo,ldquo,rdquo",
+        "input"         => "GFM",
+        "hard_wrap"     => false,
+        "guess_lang"    => true,
+        "footnote_nr"   => 1,
+        "show_warnings" => false,
+      },
+    }.each_with_object(Configuration.new) { |(k, v), hsh| hsh[k] = v.freeze }.freeze
+
+    class << self
+      # Static: Produce a Configuration ready for use in a Site.
+      # It takes the input, fills in the defaults where values do not exist.
+      #
+      # user_config - a Hash or Configuration of overrides.
+      #
+      # Returns a Configuration filled with defaults.
+      def from(user_config)
+        Utils.deep_merge_hashes(DEFAULTS, Configuration[user_config].stringify_keys)
+          .add_default_collections.add_default_excludes
+      end
+    end
+
+    # Public: Turn all keys into string
+    #
+    # Return a copy of the hash where all its keys are strings
+    def stringify_keys
+      each_with_object({}) { |(k, v), hsh| hsh[k.to_s] = v }
+    end
+
+    def get_config_value_with_override(config_key, override)
+      override[config_key] || self[config_key] || DEFAULTS[config_key]
+    end
+
+    # Public: Directory of the Jekyll source folder
+    #
+    # override - the command-line options hash
+    #
+    # Returns the path to the Jekyll source directory
+    def source(override)
+      get_config_value_with_override("source", override)
+    end
+
+    def quiet(override = {})
+      get_config_value_with_override("quiet", override)
+    end
+    alias_method :quiet?, :quiet
+
+    def verbose(override = {})
+      get_config_value_with_override("verbose", override)
+    end
+    alias_method :verbose?, :verbose
+
+    def safe_load_file(filename)
+      case File.extname(filename)
+      when %r!\.toml!i
+        Jekyll::External.require_with_graceful_fail("tomlrb") unless defined?(Tomlrb)
+        Tomlrb.load_file(filename)
+      when %r!\.ya?ml!i
+        SafeYAML.load_file(filename) || {}
+      else
+        raise ArgumentError,
+              "No parser for '#{filename}' is available. Use a .y(a)ml or .toml file instead."
+      end
+    end
+
+    # Public: Generate list of configuration files from the override
+    #
+    # override - the command-line options hash
+    #
+    # Returns an Array of config files
+    def config_files(override)
+      # Adjust verbosity quickly
+      Jekyll.logger.adjust_verbosity(
+        :quiet   => quiet?(override),
+        :verbose => verbose?(override)
+      )
+
+      # Get configuration from <source>/_config.yml or <source>/<config_file>
+      config_files = override["config"]
+      if config_files.to_s.empty?
+        default = %w(yml yaml toml).find(-> { "yml" }) do |ext|
+          File.exist?(Jekyll.sanitized_path(source(override), "_config.#{ext}"))
+        end
+        config_files = Jekyll.sanitized_path(source(override), "_config.#{default}")
+        @default_config_file = true
+      end
+      Array(config_files)
+    end
+
+    # Public: Read configuration and return merged Hash
+    #
+    # file - the path to the YAML file to be read in
+    #
+    # Returns this configuration, overridden by the values in the file
+    def read_config_file(file)
+      file = File.expand_path(file)
+      next_config = safe_load_file(file)
+
+      unless next_config.is_a?(Hash)
+        raise ArgumentError, "Configuration file: (INVALID) #{file}".yellow
+      end
+
+      Jekyll.logger.info "Configuration file:", file
+      next_config
+    rescue SystemCallError
+      if @default_config_file ||= nil
+        Jekyll.logger.warn "Configuration file:", "none"
+        {}
+      else
+        Jekyll.logger.error "Fatal:", "The configuration file '#{file}' could not be found."
+        raise LoadError, "The Configuration file '#{file}' could not be found."
+      end
+    end
+
+    # Public: Read in a list of configuration files and merge with this hash
+    #
+    # files - the list of configuration file paths
+    #
+    # Returns the full configuration, with the defaults overridden by the values in the
+    # configuration files
+    def read_config_files(files)
+      configuration = clone
+
+      begin
+        files.each do |config_file|
+          next if config_file.nil? || config_file.empty?
+
+          new_config = read_config_file(config_file)
+          configuration = Utils.deep_merge_hashes(configuration, new_config)
+        end
+      rescue ArgumentError => e
+        Jekyll.logger.warn "WARNING:", "Error reading configuration. Using defaults (and options)."
+        warn e
+      end
+
+      configuration.validate.add_default_collections
+    end
+
+    # Public: Split a CSV string into an array containing its values
+    #
+    # csv - the string of comma-separated values
+    #
+    # Returns an array of the values contained in the CSV
+    def csv_to_array(csv)
+      csv.split(",").map(&:strip)
+    end
+
+    # Public: Ensure the proper options are set in the configuration
+    #
+    # Returns the configuration Hash
+    def validate
+      config = clone
+
+      check_plugins(config)
+      check_include_exclude(config)
+
+      config
+    end
+
+    def add_default_collections
+      config = clone
+
+      # It defaults to `{}`, so this is only if someone sets it to null manually.
+      return config if config["collections"].nil?
+
+      # Ensure we have a hash.
+      if config["collections"].is_a?(Array)
+        config["collections"] = config["collections"].each_with_object({}) do |collection, hash|
+          hash[collection] = {}
+        end
+      end
+
+      config["collections"] = Utils.deep_merge_hashes(
+        { "posts" => {} }, config["collections"]
+      ).tap do |collections|
+        collections["posts"]["output"] = true
+        if config["permalink"]
+          collections["posts"]["permalink"] ||= style_to_permalink(config["permalink"])
+        end
+      end
+
+      config
+    end
+
+    DEFAULT_EXCLUDES = %w(
+      .sass-cache .jekyll-cache
+      gemfiles Gemfile Gemfile.lock
+      node_modules
+      vendor/bundle/ vendor/cache/ vendor/gems/ vendor/ruby/
+    ).freeze
+
+    def add_default_excludes
+      config = clone
+      return config if config["exclude"].nil?
+
+      config["exclude"].concat(DEFAULT_EXCLUDES).uniq!
+      config
+    end
+
+    private
+
+    STYLE_TO_PERMALINK = {
+      :none     => "/:categories/:title:output_ext",
+      :date     => "/:categories/:year/:month/:day/:title:output_ext",
+      :ordinal  => "/:categories/:year/:y_day/:title:output_ext",
+      :pretty   => "/:categories/:year/:month/:day/:title/",
+      :weekdate => "/:categories/:year/W:week/:short_day/:title:output_ext",
+    }.freeze
+
+    private_constant :STYLE_TO_PERMALINK
+
+    def style_to_permalink(permalink_style)
+      STYLE_TO_PERMALINK[permalink_style.to_sym] || permalink_style.to_s
+    end
+
+    def check_include_exclude(config)
+      %w(include exclude).each do |option|
+        next unless config.key?(option)
+        next if config[option].is_a?(Array)
+
+        raise Jekyll::Errors::InvalidConfigurationError,
+              "'#{option}' should be set as an array, but was: #{config[option].inspect}."
+      end
+    end
+
+    # Private: Checks if the `plugins` config is a String
+    #
+    # config - the config hash
+    #
+    # Raises a Jekyll::Errors::InvalidConfigurationError if the config `plugins`
+    # is not an Array.
+    def check_plugins(config)
+      return unless config.key?("plugins")
+      return if config["plugins"].is_a?(Array)
+
+      Jekyll.logger.error "'plugins' should be set as an array of gem-names, but was: " \
+        "#{config["plugins"].inspect}. Use 'plugins_dir' instead to set the directory " \
+        "for your non-gemified Ruby plugins."
+      raise Jekyll::Errors::InvalidConfigurationError,
+            "'plugins' should be set as an array, but was: #{config["plugins"].inspect}."
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/converter.rb

@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Converter < Plugin
+    # Public: Get or set the highlighter prefix. When an argument is specified,
+    # the prefix will be set. If no argument is specified, the current prefix
+    # will be returned.
+    #
+    # highlighter_prefix - The String prefix (default: nil).
+    #
+    # Returns the String prefix.
+    def self.highlighter_prefix(highlighter_prefix = nil)
+      unless defined?(@highlighter_prefix) && highlighter_prefix.nil?
+        @highlighter_prefix = highlighter_prefix
+      end
+      @highlighter_prefix
+    end
+
+    # Public: Get or set the highlighter suffix. When an argument is specified,
+    # the suffix will be set. If no argument is specified, the current suffix
+    # will be returned.
+    #
+    # highlighter_suffix - The String suffix (default: nil).
+    #
+    # Returns the String suffix.
+    def self.highlighter_suffix(highlighter_suffix = nil)
+      unless defined?(@highlighter_suffix) && highlighter_suffix.nil?
+        @highlighter_suffix = highlighter_suffix
+      end
+      @highlighter_suffix
+    end
+
+    # Initialize the converter.
+    #
+    # Returns an initialized Converter.
+    def initialize(config = {})
+      @config = config
+    end
+
+    # Get the highlighter prefix.
+    #
+    # Returns the String prefix.
+    def highlighter_prefix
+      self.class.highlighter_prefix
+    end
+
+    # Get the highlighter suffix.
+    #
+    # Returns the String suffix.
+    def highlighter_suffix
+      self.class.highlighter_suffix
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/converters/identity.rb

@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Converters
+    # Identity converter. Returns same content as given.
+    # For more info on converters see https://jekyllrb.com/docs/plugins/converters/
+    class Identity < Converter
+      safe true
+
+      priority :lowest
+
+      # Public: Does the given extension match this converter's list of acceptable extensions?
+      # Takes one argument: the file's extension (including the dot).
+      #
+      # _ext - The String extension to check (not relevant here)
+      #
+      # Returns true since it always matches.
+      def matches(_ext)
+        true
+      end
+
+      # Public: The extension to be given to the output file (including the dot).
+      #
+      # ext - The String extension or original file.
+      #
+      # Returns The String output file extension.
+      def output_ext(ext)
+        ext
+      end
+
+      # Logic to do the content conversion.
+      #
+      # content - String content of file (without front matter).
+      #
+      # Returns a String of the converted content.
+      def convert(content)
+        content
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/converters/markdown.rb

@@ -0,0 +1,113 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Converters
+    # Markdown converter.
+    # For more info on converters see https://jekyllrb.com/docs/plugins/converters/
+    class Markdown < Converter
+      highlighter_prefix "\n"
+      highlighter_suffix "\n"
+      safe true
+
+      def setup
+        return if @setup ||= false
+
+        unless (@parser = get_processor)
+          if @config["safe"]
+            Jekyll.logger.warn "Build Warning:", "Custom processors are not loaded in safe mode"
+          end
+
+          Jekyll.logger.error "Markdown processor:",
+                              "#{@config["markdown"].inspect} is not a valid Markdown processor."
+          Jekyll.logger.error "", "Available processors are: #{valid_processors.join(", ")}"
+          Jekyll.logger.error ""
+          raise Errors::FatalException, "Invalid Markdown processor given: #{@config["markdown"]}"
+        end
+
+        @cache = Jekyll::Cache.new("Jekyll::Converters::Markdown")
+        @setup = true
+      end
+
+      # RuboCop does not allow reader methods to have names starting with `get_`
+      # To ensure compatibility, this check has been disabled on this method
+      #
+      # rubocop:disable Naming/AccessorMethodName
+      def get_processor
+        case @config["markdown"].downcase
+        when "kramdown" then KramdownParser.new(@config)
+        else
+          custom_processor
+        end
+      end
+      # rubocop:enable Naming/AccessorMethodName
+
+      # Public: Provides you with a list of processors comprised of the ones we support internally
+      # and the ones that you have provided to us (if they're whitelisted for use in safe mode).
+      #
+      # Returns an array of symbols.
+      def valid_processors
+        [:kramdown] + third_party_processors
+      end
+
+      # Public: A list of processors that you provide via plugins.
+      #
+      # Returns an array of symbols
+      def third_party_processors
+        self.class.constants - [:KramdownParser, :PRIORITIES]
+      end
+
+      # Does the given extension match this converter's list of acceptable extensions?
+      # Takes one argument: the file's extension (including the dot).
+      #
+      # ext - The String extension to check.
+      #
+      # Returns true if it matches, false otherwise.
+      def matches(ext)
+        extname_list.include?(ext.downcase)
+      end
+
+      # Public: The extension to be given to the output file (including the dot).
+      #
+      # ext - The String extension or original file.
+      #
+      # Returns The String output file extension.
+      def output_ext(_ext)
+        ".html"
+      end
+
+      # Logic to do the content conversion.
+      #
+      # content - String content of file (without front matter).
+      #
+      # Returns a String of the converted content.
+      def convert(content)
+        setup
+        @cache.getset(content) do
+          @parser.convert(content)
+        end
+      end
+
+      def extname_list
+        @extname_list ||= @config["markdown_ext"].split(",").map! { |e| ".#{e.downcase}" }
+      end
+
+      private
+
+      def custom_processor
+        converter_name = @config["markdown"]
+        self.class.const_get(converter_name).new(@config) if custom_class_allowed?(converter_name)
+      end
+
+      # Private: Determine whether a class name is an allowed custom
+      #   markdown class name.
+      #
+      # parser_name - the name of the parser class
+      #
+      # Returns true if the parser name contains only alphanumeric characters and is defined
+      # within Jekyll::Converters::Markdown
+      def custom_class_allowed?(parser_name)
+        parser_name !~ %r![^A-Za-z0-9_]! && self.class.constants.include?(parser_name.to_sym)
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/converters/markdown/kramdown_parser.rb

@@ -0,0 +1,199 @@
+# Frozen-string-literal: true
+
+module Kramdown
+  # A Kramdown::Document subclass meant to optimize memory usage from initializing
+  # a kramdown document for parsing.
+  #
+  # The optimization is by using the same options Hash (and its derivatives) for
+  # converting all Markdown documents in a Jekyll site.
+  class JekyllDocument < Document
+    class << self
+      attr_reader :options, :parser
+
+      # The implementation is basically the core logic in +Kramdown::Document#initialize+
+      #
+      # rubocop:disable Naming/MemoizedInstanceVariableName
+      def setup(options)
+        @cache ||= {}
+
+        # reset variables on a subsequent set up with a different options Hash
+        unless @cache[:id] == options.hash
+          @options = @parser = nil
+          @cache[:id] = options.hash
+        end
+
+        @options ||= Options.merge(options).freeze
+        @parser  ||= begin
+          parser_name = (@options[:input] || "kramdown").to_s
+          parser_name = parser_name[0..0].upcase + parser_name[1..-1]
+          try_require("parser", parser_name)
+
+          if Parser.const_defined?(parser_name)
+            Parser.const_get(parser_name)
+          else
+            raise Kramdown::Error, "kramdown has no parser to handle the specified " \
+                                   "input format: #{@options[:input]}"
+          end
+        end
+      end
+      # rubocop:enable Naming/MemoizedInstanceVariableName
+
+      private
+
+      def try_require(type, name)
+        require "kramdown/#{type}/#{Utils.snake_case(name)}"
+      rescue LoadError
+        false
+      end
+    end
+
+    def initialize(source, options = {})
+      JekyllDocument.setup(options)
+
+      @options = JekyllDocument.options
+      @root, @warnings = JekyllDocument.parser.parse(source, @options)
+    end
+
+    # Use Kramdown::Converter::Html class to convert this document into HTML.
+    #
+    # The implementation is basically an optimized version of core logic in
+    # +Kramdown::Document#method_missing+ from kramdown-2.1.0.
+    def to_html
+      output, warnings = Kramdown::Converter::Html.convert(@root, @options)
+      @warnings.concat(warnings)
+      output
+    end
+  end
+end
+
+#
+
+module Jekyll
+  module Converters
+    class Markdown
+      class KramdownParser
+        CODERAY_DEFAULTS = {
+          "css"               => "style",
+          "bold_every"        => 10,
+          "line_numbers"      => "inline",
+          "line_number_start" => 1,
+          "tab_width"         => 4,
+          "wrap"              => "div",
+        }.freeze
+
+        def initialize(config)
+          @main_fallback_highlighter = config["highlighter"] || "rouge"
+          @config = config["kramdown"] || {}
+          @highlighter = nil
+          setup
+          load_dependencies
+        end
+
+        # Setup and normalize the configuration:
+        #   * Create Kramdown if it doesn't exist.
+        #   * Set syntax_highlighter, detecting enable_coderay and merging
+        #       highlighter if none.
+        #   * Merge kramdown[coderay] into syntax_highlighter_opts stripping coderay_.
+        #   * Make sure `syntax_highlighter_opts` exists.
+
+        def setup
+          @config["syntax_highlighter"] ||= highlighter
+          @config["syntax_highlighter_opts"] ||= {}
+          @config["syntax_highlighter_opts"]["default_lang"] ||= "plaintext"
+          @config["syntax_highlighter_opts"]["guess_lang"] = @config["guess_lang"]
+          @config["coderay"] ||= {} # XXX: Legacy.
+          modernize_coderay_config
+        end
+
+        def convert(content)
+          document = Kramdown::JekyllDocument.new(content, @config)
+          html_output = document.to_html
+          if @config["show_warnings"]
+            document.warnings.each do |warning|
+              Jekyll.logger.warn "Kramdown warning:", warning
+            end
+          end
+          html_output
+        end
+
+        private
+
+        def load_dependencies
+          require "kramdown-parser-gfm" if @config["input"] == "GFM"
+
+          if highlighter == "coderay"
+            Jekyll::External.require_with_graceful_fail("kramdown-syntax-coderay")
+          end
+
+          # `mathjax` emgine is bundled within kramdown-2.x and will be handled by
+          # kramdown itself.
+          if (math_engine = @config["math_engine"]) && math_engine != "mathjax"
+            Jekyll::External.require_with_graceful_fail("kramdown-math-#{math_engine}")
+          end
+        end
+
+        # config[kramdown][syntax_higlighter] >
+        #   config[kramdown][enable_coderay] >
+        #   config[highlighter]
+        # Where `enable_coderay` is now deprecated because Kramdown
+        # supports Rouge now too.
+        def highlighter
+          return @highlighter if @highlighter
+
+          if @config["syntax_highlighter"]
+            return @highlighter = @config[
+              "syntax_highlighter"
+            ]
+          end
+
+          @highlighter = begin
+            if @config.key?("enable_coderay") && @config["enable_coderay"]
+              Jekyll::Deprecator.deprecation_message(
+                "You are using 'enable_coderay', " \
+                "use syntax_highlighter: coderay in your configuration file."
+              )
+
+              "coderay"
+            else
+              @main_fallback_highlighter
+            end
+          end
+        end
+
+        def strip_coderay_prefix(hash)
+          hash.each_with_object({}) do |(key, val), hsh|
+            cleaned_key = key.to_s.gsub(%r!\Acoderay_!, "")
+
+            if key != cleaned_key
+              Jekyll::Deprecator.deprecation_message(
+                "You are using '#{key}'. Normalizing to #{cleaned_key}."
+              )
+            end
+
+            hsh[cleaned_key] = val
+          end
+        end
+
+        # If our highlighter is CodeRay we go in to merge the CodeRay defaults
+        # with your "coderay" key if it's there, deprecating it in the
+        # process of you using it.
+        def modernize_coderay_config
+          unless @config["coderay"].empty?
+            Jekyll::Deprecator.deprecation_message(
+              "You are using 'kramdown.coderay' in your configuration, " \
+              "please use 'syntax_highlighter_opts' instead."
+            )
+
+            @config["syntax_highlighter_opts"] = begin
+              strip_coderay_prefix(
+                @config["syntax_highlighter_opts"] \
+                  .merge(CODERAY_DEFAULTS) \
+                  .merge(@config["coderay"])
+              )
+            end
+          end
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/converters/smartypants.rb

@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+module Kramdown
+  module Parser
+    class SmartyPants < Kramdown::Parser::Kramdown
+      def initialize(source, options)
+        super
+        @block_parsers = [:block_html, :content]
+        @span_parsers =  [:smart_quotes, :html_entity, :typographic_syms, :span_html]
+      end
+
+      def parse_content
+        add_text @src.scan(%r!\A.*\n!)
+      end
+      define_parser(:content, %r!\A!)
+    end
+  end
+end
+
+module Jekyll
+  module Converters
+    # SmartyPants converter.
+    # For more info on converters see https://jekyllrb.com/docs/plugins/converters/
+    class SmartyPants < Converter
+      safe true
+      priority :low
+
+      def initialize(config)
+        Jekyll::External.require_with_graceful_fail "kramdown" unless defined?(Kramdown)
+        @config = config["kramdown"].dup || {}
+        @config[:input] = :SmartyPants
+      end
+
+      # Does the given extension match this converter's list of acceptable extensions?
+      # Takes one argument: the file's extension (including the dot).
+      #
+      # ext - The String extension to check.
+      #
+      # Returns true if it matches, false otherwise.
+      def matches(_ext)
+        false
+      end
+
+      # Public: The extension to be given to the output file (including the dot).
+      #
+      # ext - The String extension or original file.
+      #
+      # Returns The String output file extension.
+      def output_ext(_ext)
+        nil
+      end
+
+      # Logic to do the content conversion.
+      #
+      # content - String content of file (without front matter).
+      #
+      # Returns a String of the converted content.
+      def convert(content)
+        document = Kramdown::Document.new(content, @config)
+        html_output = document.to_html.chomp
+        if @config["show_warnings"]
+          document.warnings.each do |warning|
+            Jekyll.logger.warn "Kramdown warning:", warning.sub(%r!^Warning:\s+!, "")
+          end
+        end
+        html_output
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/convertible.rb

@@ -0,0 +1,260 @@
+# frozen_string_literal: true
+
+# Convertible provides methods for converting a pagelike item
+# from a certain type of markup into actual content
+#
+# Requires
+#   self.site -> Jekyll::Site
+#   self.content
+#   self.content=
+#   self.data=
+#   self.ext=
+#   self.output=
+#   self.name
+#   self.path
+#   self.type -> :page, :post or :draft
+
+module Jekyll
+  module Convertible
+    # Returns the contents as a String.
+    def to_s
+      content || ""
+    end
+
+    # Whether the file is published or not, as indicated in YAML front-matter
+    def published?
+      !(data.key?("published") && data["published"] == false)
+    end
+
+    # Read the YAML frontmatter.
+    #
+    # base - The String path to the dir containing the file.
+    # name - The String filename of the file.
+    # opts - optional parameter to File.read, default at site configs
+    #
+    # Returns nothing.
+    # rubocop:disable Metrics/AbcSize
+    def read_yaml(base, name, opts = {})
+      filename = @path || site.in_source_dir(base, name)
+      Jekyll.logger.debug "Reading:", relative_path
+
+      begin
+        self.content = File.read(filename, **Utils.merged_file_read_opts(site, opts))
+        if content =~ Document::YAML_FRONT_MATTER_REGEXP
+          self.content = Regexp.last_match.post_match
+          self.data = SafeYAML.load(Regexp.last_match(1))
+        end
+      rescue Psych::SyntaxError => e
+        Jekyll.logger.warn "YAML Exception reading #{filename}: #{e.message}"
+        raise e if site.config["strict_front_matter"]
+      rescue StandardError => e
+        Jekyll.logger.warn "Error reading file #{filename}: #{e.message}"
+        raise e if site.config["strict_front_matter"]
+      end
+
+      self.data ||= {}
+
+      validate_data! filename
+      validate_permalink! filename
+
+      self.data
+    end
+    # rubocop:enable Metrics/AbcSize
+
+    def validate_data!(filename)
+      unless self.data.is_a?(Hash)
+        raise Errors::InvalidYAMLFrontMatterError,
+              "Invalid YAML front matter in #{filename}"
+      end
+    end
+
+    def validate_permalink!(filename)
+      if self.data["permalink"] == ""
+        raise Errors::InvalidPermalinkError, "Invalid permalink in #{filename}"
+      end
+    end
+
+    # Transform the contents based on the content type.
+    #
+    # Returns the transformed contents.
+    def transform
+      renderer.convert(content)
+    end
+
+    # Determine the extension depending on content_type.
+    #
+    # Returns the String extension for the output file.
+    #   e.g. ".html" for an HTML output file.
+    def output_ext
+      renderer.output_ext
+    end
+
+    # Determine which converter to use based on this convertible's
+    # extension.
+    #
+    # Returns the Converter instance.
+    def converters
+      renderer.converters
+    end
+
+    # Render Liquid in the content
+    #
+    # content - the raw Liquid content to render
+    # payload - the payload for Liquid
+    # info    - the info for Liquid
+    #
+    # Returns the converted content
+    def render_liquid(content, payload, info, path)
+      renderer.render_liquid(content, payload, info, path)
+    end
+
+    # Convert this Convertible's data to a Hash suitable for use by Liquid.
+    #
+    # Returns the Hash representation of this Convertible.
+    def to_liquid(attrs = nil)
+      further_data = attribute_hash(attrs || self.class::ATTRIBUTES_FOR_LIQUID)
+      Utils.deep_merge_hashes defaults, Utils.deep_merge_hashes(data, further_data)
+    end
+
+    # The type of a document,
+    #   i.e., its classname downcase'd and to_sym'd.
+    #
+    # Returns the type of self.
+    def type
+      :pages if is_a?(Page)
+    end
+
+    # returns the owner symbol for hook triggering
+    def hook_owner
+      :pages if is_a?(Page)
+    end
+
+    # Determine whether the document is an asset file.
+    # Asset files include CoffeeScript files and Sass/SCSS files.
+    #
+    # Returns true if the extname belongs to the set of extensions
+    #   that asset files use.
+    def asset_file?
+      sass_file? || coffeescript_file?
+    end
+
+    # Determine whether the document is a Sass file.
+    #
+    # Returns true if extname == .sass or .scss, false otherwise.
+    def sass_file?
+      Jekyll::Document::SASS_FILE_EXTS.include?(ext)
+    end
+
+    # Determine whether the document is a CoffeeScript file.
+    #
+    # Returns true if extname == .coffee, false otherwise.
+    def coffeescript_file?
+      ext == ".coffee"
+    end
+
+    # Determine whether the file should be rendered with Liquid.
+    #
+    # Returns true if the file has Liquid Tags or Variables, false otherwise.
+    def render_with_liquid?
+      return false if data["render_with_liquid"] == false
+
+      Jekyll::Utils.has_liquid_construct?(content)
+    end
+
+    # Determine whether the file should be placed into layouts.
+    #
+    # Returns false if the document is an asset file or if the front matter
+    #   specifies `layout: none`
+    def place_in_layout?
+      !(asset_file? || no_layout?)
+    end
+
+    # Checks if the layout specified in the document actually exists
+    #
+    # layout - the layout to check
+    #
+    # Returns true if the layout is invalid, false if otherwise
+    def invalid_layout?(layout)
+      !data["layout"].nil? && layout.nil? && !(is_a? Jekyll::Excerpt)
+    end
+
+    # Recursively render layouts
+    #
+    # layouts - a list of the layouts
+    # payload - the payload for Liquid
+    # info    - the info for Liquid
+    #
+    # Returns nothing
+    def render_all_layouts(layouts, payload, info)
+      renderer.layouts = layouts
+      self.output = renderer.place_in_layouts(output, payload, info)
+    ensure
+      @renderer = nil # this will allow the modifications above to disappear
+    end
+
+    # Add any necessary layouts to this convertible document.
+    #
+    # payload - The site payload Drop or Hash.
+    # layouts - A Hash of {"name" => "layout"}.
+    #
+    # Returns nothing.
+    def do_layout(payload, layouts)
+      self.output = renderer.tap do |doc_renderer|
+        doc_renderer.layouts = layouts
+        doc_renderer.payload = payload
+      end.run
+
+      Jekyll.logger.debug "Post-Render Hooks:", relative_path
+      Jekyll::Hooks.trigger hook_owner, :post_render, self
+    ensure
+      @renderer = nil # this will allow the modifications above to disappear
+    end
+
+    # Write the generated page file to the destination directory.
+    #
+    # dest - The String path to the destination dir.
+    #
+    # Returns nothing.
+    def write(dest)
+      path = destination(dest)
+      FileUtils.mkdir_p(File.dirname(path))
+      Jekyll.logger.debug "Writing:", path
+      File.write(path, output, :mode => "wb")
+      Jekyll::Hooks.trigger hook_owner, :post_write, self
+    end
+
+    # Accessor for data properties by Liquid.
+    #
+    # property - The String name of the property to retrieve.
+    #
+    # Returns the String value or nil if the property isn't included.
+    def [](property)
+      if self.class::ATTRIBUTES_FOR_LIQUID.include?(property)
+        send(property)
+      else
+        data[property]
+      end
+    end
+
+    def renderer
+      @renderer ||= Jekyll::Renderer.new(site, self)
+    end
+
+    private
+
+    def defaults
+      @defaults ||= site.frontmatter_defaults.all(relative_path, type)
+    end
+
+    def attribute_hash(attrs)
+      @attribute_hash ||= {}
+      @attribute_hash[attrs] ||= attrs.each_with_object({}) do |attribute, hsh|
+        hsh[attribute] = send(attribute)
+      end
+    end
+
+    def no_layout?
+      data["layout"] == "none"
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/deprecator.rb

@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Deprecator
+    extend self
+
+    def process(args)
+      arg_is_present? args, "--server", "The --server command has been replaced by the \
+                          'serve' subcommand."
+      arg_is_present? args, "--serve", "The --serve command has been replaced by the \
+                          'serve' subcommand."
+      arg_is_present? args, "--no-server", "To build Jekyll without launching a server, \
+                          use the 'build' subcommand."
+      arg_is_present? args, "--auto", "The switch '--auto' has been replaced with \
+                          '--watch'."
+      arg_is_present? args, "--no-auto", "To disable auto-replication, simply leave off \
+                          the '--watch' switch."
+      arg_is_present? args, "--pygments", "The 'pygments'settings has been removed in \
+                          favour of 'highlighter'."
+      arg_is_present? args, "--paginate", "The 'paginate' setting can only be set in \
+                          your config files."
+      arg_is_present? args, "--url", "The 'url' setting can only be set in your \
+                          config files."
+      no_subcommand(args)
+    end
+
+    def no_subcommand(args)
+      unless args.empty? ||
+          args.first !~ %r(!/^--/!) || %w(--help --version).include?(args.first)
+        deprecation_message "Jekyll now uses subcommands instead of just switches. \
+                          Run `jekyll help` to find out more."
+        abort
+      end
+    end
+
+    def arg_is_present?(args, deprecated_argument, message)
+      deprecation_message(message) if args.include?(deprecated_argument)
+    end
+
+    def deprecation_message(message)
+      Jekyll.logger.warn "Deprecation:", message
+    end
+
+    def defaults_deprecate_type(old, current)
+      Jekyll.logger.warn "Defaults:", "The '#{old}' type has become '#{current}'."
+      Jekyll.logger.warn "Defaults:", "Please update your front-matter defaults to use \
+                        'type: #{current}'."
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/document.rb

@@ -0,0 +1,544 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Document
+    include Comparable
+    extend Forwardable
+
+    attr_reader :path, :site, :extname, :collection, :type
+    attr_accessor :content, :output
+
+    def_delegator :self, :read_post_data, :post_read
+
+    YAML_FRONT_MATTER_REGEXP = %r!\A(---\s*\n.*?\n?)^((---|\.\.\.)\s*$\n?)!m.freeze
+    DATELESS_FILENAME_MATCHER = %r!^(?:.+/)*(.*)(\.[^.]+)$!.freeze
+    DATE_FILENAME_MATCHER = %r!^(?>.+/)*?(\d{2,4}-\d{1,2}-\d{1,2})-([^/]*)(\.[^.]+)$!.freeze
+
+    SASS_FILE_EXTS = %w(.sass .scss).freeze
+    YAML_FILE_EXTS = %w(.yaml .yml).freeze
+
+    #
+
+    # Class-wide cache to stash and retrieve regexp to detect "super-directories"
+    # of a particular Jekyll::Document object.
+    #
+    # dirname - The *special directory* for the Document.
+    #           e.g. "_posts" or "_drafts" for Documents from the `site.posts` collection.
+    def self.superdirs_regex(dirname)
+      @superdirs_regex ||= {}
+      @superdirs_regex[dirname] ||= %r!#{dirname}.*!
+    end
+
+    #
+
+    # Create a new Document.
+    #
+    # path - the path to the file
+    # relations - a hash with keys :site and :collection, the values of which
+    #             are the Jekyll::Site and Jekyll::Collection to which this
+    #             Document belong.
+    #
+    # Returns nothing.
+    def initialize(path, relations = {})
+      @site = relations[:site]
+      @path = path
+      @extname = File.extname(path)
+      @collection = relations[:collection]
+      @type = @collection.label.to_sym
+
+      @has_yaml_header = nil
+
+      if draft?
+        categories_from_path("_drafts")
+      else
+        categories_from_path(collection.relative_directory)
+      end
+
+      data.default_proc = proc do |_, key|
+        site.frontmatter_defaults.find(relative_path, type, key)
+      end
+
+      trigger_hooks(:post_init)
+    end
+
+    # Fetch the Document's data.
+    #
+    # Returns a Hash containing the data. An empty hash is returned if
+    #   no data was read.
+    def data
+      @data ||= {}
+    end
+
+    # Merge some data in with this document's data.
+    #
+    # Returns the merged data.
+    def merge_data!(other, source: "YAML front matter")
+      merge_categories!(other)
+      Utils.deep_merge_hashes!(data, other)
+      merge_date!(source)
+      data
+    end
+
+    # Returns the document date. If metadata is not present then calculates it
+    # based on Jekyll::Site#time or the document file modification time.
+    #
+    # Return document date string.
+    def date
+      data["date"] ||= (draft? ? source_file_mtime : site.time)
+    end
+
+    # Return document file modification time in the form of a Time object.
+    #
+    # Return document file modification Time object.
+    def source_file_mtime
+      File.mtime(path)
+    end
+
+    # Returns whether the document is a draft. This is only the case if
+    # the document is in the 'posts' collection but in a different
+    # directory than '_posts'.
+    #
+    # Returns whether the document is a draft.
+    def draft?
+      data["draft"] ||= relative_path.index(collection.relative_directory).nil? &&
+        collection.label == "posts"
+    end
+
+    # The path to the document, relative to the collections_dir.
+    #
+    # Returns a String path which represents the relative path from the collections_dir
+    # to this document.
+    def relative_path
+      @relative_path ||= path.sub("#{site.collections_path}/", "")
+    end
+
+    # The output extension of the document.
+    #
+    # Returns the output extension
+    def output_ext
+      renderer.output_ext
+    end
+
+    # The base filename of the document, without the file extname.
+    #
+    # Returns the basename without the file extname.
+    def basename_without_ext
+      @basename_without_ext ||= File.basename(path, ".*")
+    end
+
+    # The base filename of the document.
+    #
+    # Returns the base filename of the document.
+    def basename
+      @basename ||= File.basename(path)
+    end
+
+    def renderer
+      @renderer ||= Jekyll::Renderer.new(site, self)
+    end
+
+    # Produces a "cleaned" relative path.
+    # The "cleaned" relative path is the relative path without the extname
+    #   and with the collection's directory removed as well.
+    # This method is useful when building the URL of the document.
+    #
+    # NOTE: `String#gsub` removes all trailing periods (in comparison to `String#chomp`)
+    #
+    # Examples:
+    #   When relative_path is "_methods/site/generate...md":
+    #     cleaned_relative_path
+    #     # => "/site/generate"
+    #
+    # Returns the cleaned relative path of the document.
+    def cleaned_relative_path
+      @cleaned_relative_path ||=
+        relative_path[0..-extname.length - 1]
+          .sub(collection.relative_directory, "")
+          .gsub(%r!\.*\z!, "")
+    end
+
+    # Determine whether the document is a YAML file.
+    #
+    # Returns true if the extname is either .yml or .yaml, false otherwise.
+    def yaml_file?
+      YAML_FILE_EXTS.include?(extname)
+    end
+
+    # Determine whether the document is an asset file.
+    # Asset files include CoffeeScript files and Sass/SCSS files.
+    #
+    # Returns true if the extname belongs to the set of extensions
+    #   that asset files use.
+    def asset_file?
+      sass_file? || coffeescript_file?
+    end
+
+    # Determine whether the document is a Sass file.
+    #
+    # Returns true if extname == .sass or .scss, false otherwise.
+    def sass_file?
+      SASS_FILE_EXTS.include?(extname)
+    end
+
+    # Determine whether the document is a CoffeeScript file.
+    #
+    # Returns true if extname == .coffee, false otherwise.
+    def coffeescript_file?
+      extname == ".coffee"
+    end
+
+    # Determine whether the file should be rendered with Liquid.
+    #
+    # Returns false if the document is either an asset file or a yaml file,
+    #   or if the document doesn't contain any Liquid Tags or Variables,
+    #   true otherwise.
+    def render_with_liquid?
+      return false if data["render_with_liquid"] == false
+
+      !(coffeescript_file? || yaml_file? || !Utils.has_liquid_construct?(content))
+    end
+
+    # Determine whether the file should be rendered with a layout.
+    #
+    # Returns true if the Front Matter specifies that `layout` is set to `none`.
+    def no_layout?
+      data["layout"] == "none"
+    end
+
+    # Determine whether the file should be placed into layouts.
+    #
+    # Returns false if the document is set to `layouts: none`, or is either an
+    #   asset file or a yaml file. Returns true otherwise.
+    def place_in_layout?
+      !(asset_file? || yaml_file? || no_layout?)
+    end
+
+    # The URL template where the document would be accessible.
+    #
+    # Returns the URL template for the document.
+    def url_template
+      collection.url_template
+    end
+
+    # Construct a Hash of key-value pairs which contain a mapping between
+    #   a key in the URL template and the corresponding value for this document.
+    #
+    # Returns the Hash of key-value pairs for replacement in the URL.
+    def url_placeholders
+      @url_placeholders ||= Drops::UrlDrop.new(self)
+    end
+
+    # The permalink for this Document.
+    # Permalink is set via the data Hash.
+    #
+    # Returns the permalink or nil if no permalink was set in the data.
+    def permalink
+      data && data.is_a?(Hash) && data["permalink"]
+    end
+
+    # The computed URL for the document. See `Jekyll::URL#to_s` for more details.
+    #
+    # Returns the computed URL for the document.
+    def url
+      @url ||= URL.new(
+        :template     => url_template,
+        :placeholders => url_placeholders,
+        :permalink    => permalink
+      ).to_s
+    end
+
+    def [](key)
+      data[key]
+    end
+
+    # The full path to the output file.
+    #
+    # base_directory - the base path of the output directory
+    #
+    # Returns the full path to the output file of this document.
+    def destination(base_directory)
+      @destination ||= {}
+      @destination[base_directory] ||= begin
+        path = site.in_dest_dir(base_directory, URL.unescape_path(url))
+        if url.end_with? "/"
+          path = File.join(path, "index.html")
+        else
+          path << output_ext unless path.end_with? output_ext
+        end
+        path
+      end
+    end
+
+    # Write the generated Document file to the destination directory.
+    #
+    # dest - The String path to the destination dir.
+    #
+    # Returns nothing.
+    def write(dest)
+      path = destination(dest)
+      FileUtils.mkdir_p(File.dirname(path))
+      Jekyll.logger.debug "Writing:", path
+      File.write(path, output, :mode => "wb")
+
+      trigger_hooks(:post_write)
+    end
+
+    # Whether the file is published or not, as indicated in YAML front-matter
+    #
+    # Returns 'false' if the 'published' key is specified in the
+    # YAML front-matter and is 'false'. Otherwise returns 'true'.
+    def published?
+      !(data.key?("published") && data["published"] == false)
+    end
+
+    # Read in the file and assign the content and data based on the file contents.
+    # Merge the frontmatter of the file with the frontmatter default
+    # values
+    #
+    # Returns nothing.
+    def read(opts = {})
+      Jekyll.logger.debug "Reading:", relative_path
+
+      if yaml_file?
+        @data = SafeYAML.load_file(path)
+      else
+        begin
+          merge_defaults
+          read_content(**opts)
+          read_post_data
+        rescue StandardError => e
+          handle_read_error(e)
+        end
+      end
+    end
+
+    # Create a Liquid-understandable version of this Document.
+    #
+    # Returns a Hash representing this Document's data.
+    def to_liquid
+      @to_liquid ||= Drops::DocumentDrop.new(self)
+    end
+
+    # The inspect string for this document.
+    # Includes the relative path and the collection label.
+    #
+    # Returns the inspect string for this document.
+    def inspect
+      "#<#{self.class} #{relative_path} collection=#{collection.label}>"
+    end
+
+    # The string representation for this document.
+    #
+    # Returns the content of the document
+    def to_s
+      output || content || "NO CONTENT"
+    end
+
+    # Compare this document against another document.
+    # Comparison is a comparison between the 2 paths of the documents.
+    #
+    # Returns -1, 0, +1 or nil depending on whether this doc's path is less than,
+    #   equal or greater than the other doc's path. See String#<=> for more details.
+    def <=>(other)
+      return nil unless other.respond_to?(:data)
+
+      cmp = data["date"] <=> other.data["date"]
+      cmp = path <=> other.path if cmp.nil? || cmp.zero?
+      cmp
+    end
+
+    # Determine whether this document should be written.
+    # Based on the Collection to which it belongs.
+    #
+    # True if the document has a collection and if that collection's #write?
+    # method returns true, and if the site's Publisher will publish the document.
+    # False otherwise.
+    #
+    # rubocop:disable Naming/MemoizedInstanceVariableName
+    def write?
+      return @write_p if defined?(@write_p)
+
+      @write_p = collection&.write? && site.publisher.publish?(self)
+    end
+    # rubocop:enable Naming/MemoizedInstanceVariableName
+
+    # The Document excerpt_separator, from the YAML Front-Matter or site
+    # default excerpt_separator value
+    #
+    # Returns the document excerpt_separator
+    def excerpt_separator
+      @excerpt_separator ||= (data["excerpt_separator"] || site.config["excerpt_separator"]).to_s
+    end
+
+    # Whether to generate an excerpt
+    #
+    # Returns true if the excerpt separator is configured.
+    def generate_excerpt?
+      !excerpt_separator.empty?
+    end
+
+    def next_doc
+      pos = collection.docs.index { |post| post.equal?(self) }
+      collection.docs[pos + 1] if pos && pos < collection.docs.length - 1
+    end
+
+    def previous_doc
+      pos = collection.docs.index { |post| post.equal?(self) }
+      collection.docs[pos - 1] if pos && pos.positive?
+    end
+
+    def trigger_hooks(hook_name, *args)
+      Jekyll::Hooks.trigger collection.label.to_sym, hook_name, self, *args if collection
+      Jekyll::Hooks.trigger :documents, hook_name, self, *args
+    end
+
+    def id
+      @id ||= File.join(File.dirname(url), (data["slug"] || basename_without_ext).to_s)
+    end
+
+    # Calculate related posts.
+    #
+    # Returns an Array of related Posts.
+    def related_posts
+      @related_posts ||= Jekyll::RelatedPosts.new(self).build
+    end
+
+    # Override of method_missing to check in @data for the key.
+    def method_missing(method, *args, &blck)
+      if data.key?(method.to_s)
+        Jekyll::Deprecator.deprecation_message "Document##{method} is now a key "\
+                           "in the #data hash."
+        Jekyll::Deprecator.deprecation_message "Called by #{caller(0..0)}."
+        data[method.to_s]
+      else
+        super
+      end
+    end
+
+    def respond_to_missing?(method, *)
+      data.key?(method.to_s) || super
+    end
+
+    # Add superdirectories of the special_dir to categories.
+    # In the case of es/_posts, 'es' is added as a category.
+    # In the case of _posts/es, 'es' is NOT added as a category.
+    #
+    # Returns nothing.
+    def categories_from_path(special_dir)
+      if relative_path.start_with?(special_dir)
+        superdirs = []
+      else
+        superdirs = relative_path.sub(Document.superdirs_regex(special_dir), "")
+        superdirs = superdirs.split(File::SEPARATOR)
+        superdirs.reject! { |c| c.empty? || c == special_dir || c == basename }
+      end
+
+      merge_data!({ "categories" => superdirs }, :source => "file path")
+    end
+
+    def populate_categories
+      categories = Array(data["categories"]) + Utils.pluralized_array_from_hash(
+        data, "category", "categories"
+      )
+      categories.map!(&:to_s)
+      categories.flatten!
+      categories.uniq!
+
+      merge_data!({ "categories" => categories })
+    end
+
+    def populate_tags
+      tags = Utils.pluralized_array_from_hash(data, "tag", "tags")
+      tags.flatten!
+
+      merge_data!({ "tags" => tags })
+    end
+
+    private
+
+    def merge_categories!(other)
+      if other.key?("categories") && !other["categories"].nil?
+        other["categories"] = other["categories"].split if other["categories"].is_a?(String)
+
+        if data["categories"].is_a?(Array)
+          other["categories"] = data["categories"] | other["categories"]
+        end
+      end
+    end
+
+    def merge_date!(source)
+      if data.key?("date")
+        data["date"] = Utils.parse_date(
+          data["date"].to_s,
+          "Document '#{relative_path}' does not have a valid date in the #{source}."
+        )
+      end
+    end
+
+    def merge_defaults
+      defaults = @site.frontmatter_defaults.all(relative_path, type)
+      merge_data!(defaults, :source => "front matter defaults") unless defaults.empty?
+    end
+
+    def read_content(**opts)
+      self.content = File.read(path, **Utils.merged_file_read_opts(site, opts))
+      if content =~ YAML_FRONT_MATTER_REGEXP
+        self.content = Regexp.last_match.post_match
+        data_file = SafeYAML.load(Regexp.last_match(1))
+        merge_data!(data_file, :source => "YAML front matter") if data_file
+      end
+    end
+
+    def read_post_data
+      populate_title
+      populate_categories
+      populate_tags
+      generate_excerpt
+    end
+
+    def handle_read_error(error)
+      if error.is_a? Psych::SyntaxError
+        Jekyll.logger.error "Error:", "YAML Exception reading #{path}: #{error.message}"
+      else
+        Jekyll.logger.error "Error:", "could not read file #{path}: #{error.message}"
+      end
+
+      if site.config["strict_front_matter"] || error.is_a?(Jekyll::Errors::FatalException)
+        raise error
+      end
+    end
+
+    def populate_title
+      if relative_path =~ DATE_FILENAME_MATCHER
+        date, slug, ext = Regexp.last_match.captures
+        modify_date(date)
+      elsif relative_path =~ DATELESS_FILENAME_MATCHER
+        slug, ext = Regexp.last_match.captures
+      end
+      # `slug` will be nil for documents without an extension since the regex patterns
+      # above tests for an extension as well.
+      # In such cases, assign `basename_without_ext` as the slug.
+      slug ||= basename_without_ext
+
+      # slugs shouldn't end with a period
+      # `String#gsub!` removes all trailing periods (in comparison to `String#chomp!`)
+      slug.gsub!(%r!\.*\z!, "")
+
+      # Try to ensure the user gets a title.
+      data["title"] ||= Utils.titleize_slug(slug)
+      # Only overwrite slug & ext if they aren't specified.
+      data["slug"]  ||= slug
+      data["ext"]   ||= ext
+    end
+
+    def modify_date(date)
+      if !data["date"] || data["date"].to_i == site.time.to_i
+        merge_data!({ "date" => date }, :source => "filename")
+      end
+    end
+
+    def generate_excerpt
+      data["excerpt"] ||= Jekyll::Excerpt.new(self) if generate_excerpt?
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/drops/collection_drop.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Drops
+    class CollectionDrop < Drop
+      extend Forwardable
+
+      mutable false
+
+      delegate_method_as :write?, :output
+      delegate_methods :label, :docs, :files, :directory, :relative_directory
+
+      private delegate_method_as :metadata, :fallback_data
+
+      def to_s
+        docs.to_s
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/drops/document_drop.rb

@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Drops
+    class DocumentDrop < Drop
+      extend Forwardable
+
+      NESTED_OBJECT_FIELD_BLACKLIST = %w(
+        content output excerpt next previous
+      ).freeze
+
+      mutable false
+
+      delegate_method_as :relative_path, :path
+      private delegate_method_as :data, :fallback_data
+
+      delegate_methods :id, :output, :content, :to_s, :relative_path, :url, :date
+      data_delegators "title", "categories", "tags"
+
+      def collection
+        @obj.collection.label
+      end
+
+      def excerpt
+        fallback_data["excerpt"].to_s
+      end
+
+      def <=>(other)
+        return nil unless other.is_a? DocumentDrop
+
+        cmp = self["date"] <=> other["date"]
+        cmp = self["path"] <=> other["path"] if cmp.nil? || cmp.zero?
+        cmp
+      end
+
+      def previous
+        @obj.previous_doc.to_liquid
+      end
+
+      def next
+        @obj.next_doc.to_liquid
+      end
+
+      # Generate a Hash for use in generating JSON.
+      # This is useful if fields need to be cleared before the JSON can generate.
+      #
+      # state - the JSON::State object which determines the state of current processing.
+      #
+      # Returns a Hash ready for JSON generation.
+      def hash_for_json(state = nil)
+        to_h.tap do |hash|
+          if state && state.depth >= 2
+            hash["previous"] = collapse_document(hash["previous"]) if hash["previous"]
+            hash["next"]     = collapse_document(hash["next"]) if hash["next"]
+          end
+        end
+      end
+
+      # Generate a Hash which breaks the recursive chain.
+      # Certain fields which are normally available are omitted.
+      #
+      # Returns a Hash with only non-recursive fields present.
+      def collapse_document(doc)
+        doc.keys.each_with_object({}) do |(key, _), result|
+          result[key] = doc[key] unless NESTED_OBJECT_FIELD_BLACKLIST.include?(key)
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/drops/drop.rb

@@ -0,0 +1,293 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Drops
+    class Drop < Liquid::Drop
+      include Enumerable
+
+      NON_CONTENT_METHODS = [:fallback_data, :collapse_document].freeze
+      NON_CONTENT_METHOD_NAMES = NON_CONTENT_METHODS.map(&:to_s).freeze
+      private_constant :NON_CONTENT_METHOD_NAMES
+
+      # A private stash to avoid repeatedly generating the setter method name string for
+      # a call to `Drops::Drop#[]=`.
+      # The keys of the stash below have a very high probability of being called upon during
+      # the course of various `Jekyll::Renderer#run` calls.
+      SETTER_KEYS_STASH = {
+        "content"            => "content=",
+        "layout"             => "layout=",
+        "page"               => "page=",
+        "paginator"          => "paginator=",
+        "highlighter_prefix" => "highlighter_prefix=",
+        "highlighter_suffix" => "highlighter_suffix=",
+      }.freeze
+      private_constant :SETTER_KEYS_STASH
+
+      class << self
+        # Get or set whether the drop class is mutable.
+        # Mutability determines whether or not pre-defined fields may be
+        # overwritten.
+        #
+        # is_mutable - Boolean set mutability of the class (default: nil)
+        #
+        # Returns the mutability of the class
+        def mutable(is_mutable = nil)
+          @is_mutable = is_mutable || false
+        end
+
+        def mutable?
+          @is_mutable
+        end
+
+        # public delegation helper methods that calls onto Drop's instance
+        # variable `@obj`.
+
+        # Generate private Drop instance_methods for each symbol in the given list.
+        #
+        # Returns nothing.
+        def private_delegate_methods(*symbols)
+          symbols.each { |symbol| private delegate_method(symbol) }
+          nil
+        end
+
+        # Generate public Drop instance_methods for each symbol in the given list.
+        #
+        # Returns nothing.
+        def delegate_methods(*symbols)
+          symbols.each { |symbol| delegate_method(symbol) }
+          nil
+        end
+
+        # Generate public Drop instance_method for given symbol that calls `@obj.<sym>`.
+        #
+        # Returns delegated method symbol.
+        def delegate_method(symbol)
+          define_method(symbol) { @obj.send(symbol) }
+        end
+
+        # Generate public Drop instance_method named `delegate` that calls `@obj.<original>`.
+        #
+        # Returns delegated method symbol.
+        def delegate_method_as(original, delegate)
+          define_method(delegate) { @obj.send(original) }
+        end
+
+        # Generate public Drop instance_methods for each string entry in the given list.
+        # The generated method(s) access(es) `@obj`'s data hash.
+        #
+        # Returns nothing.
+        def data_delegators(*strings)
+          strings.each do |key|
+            data_delegator(key) if key.is_a?(String)
+          end
+          nil
+        end
+
+        # Generate public Drop instance_methods for given string `key`.
+        # The generated method access(es) `@obj`'s data hash.
+        #
+        # Returns method symbol.
+        def data_delegator(key)
+          define_method(key.to_sym) { @obj.data[key] }
+        end
+
+        # Array of stringified instance methods that do not end with the assignment operator.
+        #
+        # (<klass>.instance_methods always generates a new Array object so it can be mutated)
+        #
+        # Returns array of strings.
+        def getter_method_names
+          @getter_method_names ||= instance_methods.map!(&:to_s).tap do |list|
+            list.reject! { |item| item.end_with?("=") }
+          end
+        end
+      end
+
+      # Create a new Drop
+      #
+      # obj - the Jekyll Site, Collection, or Document required by the
+      # drop.
+      #
+      # Returns nothing
+      def initialize(obj)
+        @obj = obj
+      end
+
+      # Access a method in the Drop or a field in the underlying hash data.
+      # If mutable, checks the mutations first. Then checks the methods,
+      # and finally check the underlying hash (e.g. document front matter)
+      # if all the previous places didn't match.
+      #
+      # key - the string key whose value to fetch
+      #
+      # Returns the value for the given key, or nil if none exists
+      def [](key)
+        if self.class.mutable? && mutations.key?(key)
+          mutations[key]
+        elsif self.class.invokable? key
+          public_send key
+        else
+          fallback_data[key]
+        end
+      end
+      alias_method :invoke_drop, :[]
+
+      # Set a field in the Drop. If mutable, sets in the mutations and
+      # returns. If not mutable, checks first if it's trying to override a
+      # Drop method and raises a DropMutationException if so. If not
+      # mutable and the key is not a method on the Drop, then it sets the
+      # key to the value in the underlying hash (e.g. document front
+      # matter)
+      #
+      # key - the String key whose value to set
+      # val - the Object to set the key's value to
+      #
+      # Returns the value the key was set to unless the Drop is not mutable
+      # and the key matches a method in which case it raises a
+      # DropMutationException.
+      def []=(key, val)
+        setter = SETTER_KEYS_STASH[key] || "#{key}="
+        if respond_to?(setter)
+          public_send(setter, val)
+        elsif respond_to?(key.to_s)
+          if self.class.mutable?
+            mutations[key] = val
+          else
+            raise Errors::DropMutationException, "Key #{key} cannot be set in the drop."
+          end
+        else
+          fallback_data[key] = val
+        end
+      end
+
+      # Generates a list of strings which correspond to content getter
+      # methods.
+      #
+      # Returns an Array of strings which represent method-specific keys.
+      def content_methods
+        @content_methods ||= \
+          self.class.getter_method_names \
+            - Jekyll::Drops::Drop.getter_method_names \
+            - NON_CONTENT_METHOD_NAMES
+      end
+
+      # Check if key exists in Drop
+      #
+      # key - the string key whose value to fetch
+      #
+      # Returns true if the given key is present
+      def key?(key)
+        return false if key.nil?
+        return true if self.class.mutable? && mutations.key?(key)
+
+        respond_to?(key) || fallback_data.key?(key)
+      end
+
+      # Generates a list of keys with user content as their values.
+      # This gathers up the Drop methods and keys of the mutations and
+      # underlying data hashes and performs a set union to ensure a list
+      # of unique keys for the Drop.
+      #
+      # Returns an Array of unique keys for content for the Drop.
+      def keys
+        (content_methods |
+          mutations.keys |
+          fallback_data.keys).flatten
+      end
+
+      # Generate a Hash representation of the Drop by resolving each key's
+      # value. It includes Drop methods, mutations, and the underlying object's
+      # data. See the documentation for Drop#keys for more.
+      #
+      # Returns a Hash with all the keys and values resolved.
+      def to_h
+        keys.each_with_object({}) do |(key, _), result|
+          result[key] = self[key]
+        end
+      end
+      alias_method :to_hash, :to_h
+
+      # Inspect the drop's keys and values through a JSON representation
+      # of its keys and values.
+      #
+      # Returns a pretty generation of the hash representation of the Drop.
+      def inspect
+        JSON.pretty_generate to_h
+      end
+
+      # Generate a Hash for use in generating JSON.
+      # This is useful if fields need to be cleared before the JSON can generate.
+      #
+      # Returns a Hash ready for JSON generation.
+      def hash_for_json(*)
+        to_h
+      end
+
+      # Generate a JSON representation of the Drop.
+      #
+      # state - the JSON::State object which determines the state of current processing.
+      #
+      # Returns a JSON representation of the Drop in a String.
+      def to_json(state = nil)
+        JSON.generate(hash_for_json(state), state)
+      end
+
+      # Collects all the keys and passes each to the block in turn.
+      #
+      # block - a block which accepts one argument, the key
+      #
+      # Returns nothing.
+      def each_key(&block)
+        keys.each(&block)
+      end
+
+      def each
+        each_key.each do |key|
+          yield key, self[key]
+        end
+      end
+
+      def merge(other, &block)
+        dup.tap do |me|
+          if block.nil?
+            me.merge!(other)
+          else
+            me.merge!(other, block)
+          end
+        end
+      end
+
+      def merge!(other)
+        other.each_key do |key|
+          if block_given?
+            self[key] = yield key, self[key], other[key]
+          else
+            if Utils.mergable?(self[key]) && Utils.mergable?(other[key])
+              self[key] = Utils.deep_merge_hashes(self[key], other[key])
+              next
+            end
+
+            self[key] = other[key] unless other[key].nil?
+          end
+        end
+      end
+
+      # Imitate Hash.fetch method in Drop
+      #
+      # Returns value if key is present in Drop, otherwise returns default value
+      # KeyError is raised if key is not present and no default value given
+      def fetch(key, default = nil, &block)
+        return self[key] if key?(key)
+        raise KeyError, %(key not found: "#{key}") if default.nil? && block.nil?
+        return yield(key) unless block.nil?
+        return default unless default.nil?
+      end
+
+      private
+
+      def mutations
+        @mutations ||= {}
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/drops/excerpt_drop.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Drops
+    class ExcerptDrop < DocumentDrop
+      def layout
+        @obj.doc.data["layout"]
+      end
+
+      def date
+        @obj.doc.date
+      end
+
+      def excerpt
+        nil
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/drops/jekyll_drop.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Drops
+    class JekyllDrop < Liquid::Drop
+      class << self
+        def global
+          @global ||= JekyllDrop.new
+        end
+      end
+
+      def version
+        Jekyll::VERSION
+      end
+
+      def environment
+        Jekyll.env
+      end
+
+      def to_h
+        @to_h ||= {
+          "version"     => version,
+          "environment" => environment,
+        }
+      end
+
+      def to_json(state = nil)
+        JSON.generate(to_h, state)
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/drops/site_drop.rb

@@ -0,0 +1,66 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Drops
+    class SiteDrop < Drop
+      extend Forwardable
+
+      mutable false
+
+      delegate_method_as :site_data, :data
+      delegate_methods :time, :pages, :static_files, :tags, :categories
+
+      private delegate_method_as :config, :fallback_data
+
+      def [](key)
+        if key != "posts" && @obj.collections.key?(key)
+          @obj.collections[key].docs
+        else
+          super(key)
+        end
+      end
+
+      def key?(key)
+        (key != "posts" && @obj.collections.key?(key)) || super
+      end
+
+      def posts
+        @site_posts ||= @obj.posts.docs.sort { |a, b| b <=> a }
+      end
+
+      def html_pages
+        @site_html_pages ||= @obj.pages.select do |page|
+          page.html? || page.url.end_with?("/")
+        end
+      end
+
+      def collections
+        @site_collections ||= @obj.collections.values.sort_by(&:label).map(&:to_liquid)
+      end
+
+      # `Site#documents` cannot be memoized so that `Site#docs_to_write` can access the
+      # latest state of the attribute.
+      #
+      # Since this method will be called after `Site#pre_render` hook, the `Site#documents`
+      # array shouldn't thereafter change and can therefore be safely memoized to prevent
+      # additional computation of `Site#documents`.
+      def documents
+        @documents ||= @obj.documents
+      end
+
+      # `{{ site.related_posts }}` is how posts can get posts related to
+      # them, either through LSI if it's enabled, or through the most
+      # recent posts.
+      # We should remove this in 4.0 and switch to `{{ post.related_posts }}`.
+      def related_posts
+        return nil unless @current_document.is_a?(Jekyll::Document)
+
+        @current_document.related_posts
+      end
+      attr_writer :current_document
+
+      # return nil for `{{ site.config }}` even if --config was passed via CLI
+      def config; end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/drops/static_file_drop.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Drops
+    class StaticFileDrop < Drop
+      extend Forwardable
+      delegate_methods   :name, :extname, :modified_time, :basename
+      delegate_method_as :relative_path, :path
+      delegate_method_as :type, :collection
+
+      private delegate_method_as :data, :fallback_data
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/drops/unified_payload_drop.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Drops
+    class UnifiedPayloadDrop < Drop
+      mutable true
+
+      attr_accessor :page, :layout, :content, :paginator
+      attr_accessor :highlighter_prefix, :highlighter_suffix
+
+      def jekyll
+        JekyllDrop.global
+      end
+
+      def site
+        @site_drop ||= SiteDrop.new(@obj)
+      end
+
+      private
+
+      def fallback_data
+        @fallback_data ||= {}
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/drops/url_drop.rb

@@ -0,0 +1,140 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Drops
+    class UrlDrop < Drop
+      extend Forwardable
+
+      mutable false
+
+      delegate_method :output_ext
+      delegate_method_as :cleaned_relative_path, :path
+
+      def collection
+        @obj.collection.label
+      end
+
+      def name
+        Utils.slugify(@obj.basename_without_ext)
+      end
+
+      def title
+        Utils.slugify(@obj.data["slug"], :mode => "pretty", :cased => true) ||
+          Utils.slugify(@obj.basename_without_ext, :mode => "pretty", :cased => true)
+      end
+
+      def slug
+        Utils.slugify(@obj.data["slug"]) || Utils.slugify(@obj.basename_without_ext)
+      end
+
+      def categories
+        category_set = Set.new
+        Array(@obj.data["categories"]).each do |category|
+          category_set << category.to_s.downcase
+        end
+        category_set.to_a.join("/")
+      end
+
+      # Similar to output from #categories, but each category will be downcased and
+      # all non-alphanumeric characters of the category replaced with a hyphen.
+      def slugified_categories
+        Array(@obj.data["categories"]).each_with_object(Set.new) do |category, set|
+          set << Utils.slugify(category.to_s)
+        end.to_a.join("/")
+      end
+
+      # CCYY
+      def year
+        @obj.date.strftime("%Y")
+      end
+
+      # MM: 01..12
+      def month
+        @obj.date.strftime("%m")
+      end
+
+      # DD: 01..31
+      def day
+        @obj.date.strftime("%d")
+      end
+
+      # hh: 00..23
+      def hour
+        @obj.date.strftime("%H")
+      end
+
+      # mm: 00..59
+      def minute
+        @obj.date.strftime("%M")
+      end
+
+      # ss: 00..59
+      def second
+        @obj.date.strftime("%S")
+      end
+
+      # D: 1..31
+      def i_day
+        @obj.date.strftime("%-d")
+      end
+
+      # M: 1..12
+      def i_month
+        @obj.date.strftime("%-m")
+      end
+
+      # MMM: Jan..Dec
+      def short_month
+        @obj.date.strftime("%b")
+      end
+
+      # MMMM: January..December
+      def long_month
+        @obj.date.strftime("%B")
+      end
+
+      # YY: 00..99
+      def short_year
+        @obj.date.strftime("%y")
+      end
+
+      # CCYYw, ISO week year
+      # may differ from CCYY for the first days of January and last days of December
+      def w_year
+        @obj.date.strftime("%G")
+      end
+
+      # WW: 01..53
+      # %W and %U do not comply with ISO 8601-1
+      def week
+        @obj.date.strftime("%V")
+      end
+
+      # d: 1..7 (Monday..Sunday)
+      def w_day
+        @obj.date.strftime("%u")
+      end
+
+      # dd: Mon..Sun
+      def short_day
+        @obj.date.strftime("%a")
+      end
+
+      # ddd: Monday..Sunday
+      def long_day
+        @obj.date.strftime("%A")
+      end
+
+      # DDD: 001..366
+      def y_day
+        @obj.date.strftime("%j")
+      end
+
+      private
+
+      def fallback_data
+        @fallback_data ||= {}
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/entry_filter.rb

@@ -0,0 +1,121 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class EntryFilter
+    attr_reader :site
+
+    SPECIAL_LEADING_CHAR_REGEX = %r!\A#{Regexp.union([".", "_", "#", "~"])}!o.freeze
+
+    def initialize(site, base_directory = nil)
+      @site = site
+      @base_directory = derive_base_directory(
+        @site, base_directory.to_s.dup
+      )
+    end
+
+    def base_directory
+      @base_directory.to_s
+    end
+
+    def derive_base_directory(site, base_dir)
+      base_dir[site.source] = "" if base_dir.start_with?(site.source)
+      base_dir
+    end
+
+    def relative_to_source(entry)
+      File.join(
+        base_directory, entry
+      )
+    end
+
+    def filter(entries)
+      entries.reject do |e|
+        # Reject this entry if it is just a "dot" representation.
+        #   e.g.: '.', '..', '_movies/.', 'music/..', etc
+        next true if e.end_with?(".")
+
+        # Check if the current entry is explicitly included and cache the result
+        included = included?(e)
+
+        # Reject current entry if it is excluded but not explicitly included as well.
+        next true if excluded?(e) && !included
+
+        # Reject current entry if it is a symlink.
+        next true if symlink?(e)
+
+        # Do not reject current entry if it is explicitly included.
+        next false if included
+
+        # Reject current entry if it is special or a backup file.
+        special?(e) || backup?(e)
+      end
+    end
+
+    def included?(entry)
+      glob_include?(site.include, entry) ||
+        glob_include?(site.include, File.basename(entry))
+    end
+
+    def special?(entry)
+      SPECIAL_LEADING_CHAR_REGEX.match?(entry) ||
+        SPECIAL_LEADING_CHAR_REGEX.match?(File.basename(entry))
+    end
+
+    def backup?(entry)
+      entry.end_with?("~")
+    end
+
+    def excluded?(entry)
+      glob_include?(site.exclude - site.include, relative_to_source(entry)).tap do |excluded|
+        if excluded
+          Jekyll.logger.debug(
+            "EntryFilter:",
+            "excluded #{relative_to_source(entry)}"
+          )
+        end
+      end
+    end
+
+    # --
+    # Check if a file is a symlink.
+    # NOTE: This can be converted to allowing even in safe,
+    #   since we use Pathutil#in_path? now.
+    # --
+    def symlink?(entry)
+      site.safe && File.symlink?(entry) && symlink_outside_site_source?(entry)
+    end
+
+    # --
+    # NOTE: Pathutil#in_path? gets the realpath.
+    # @param [<Anything>] entry the entry you want to validate.
+    # Check if a path is outside of our given root.
+    # --
+    def symlink_outside_site_source?(entry)
+      !Pathutil.new(entry).in_path?(
+        site.in_source_dir
+      )
+    end
+
+    # Check if an entry matches a specific pattern.
+    # Returns true if path matches against any glob pattern, else false.
+    def glob_include?(enumerator, entry)
+      entry_with_source = PathManager.join(site.source, entry)
+      entry_is_directory = File.directory?(entry_with_source)
+
+      enumerator.any? do |pattern|
+        case pattern
+        when String
+          pattern_with_source = PathManager.join(site.source, pattern)
+
+          File.fnmatch?(pattern_with_source, entry_with_source) ||
+            entry_with_source.start_with?(pattern_with_source) ||
+            (pattern_with_source == "#{entry_with_source}/" if entry_is_directory)
+        when Regexp
+          pattern.match?(entry_with_source)
+        else
+          false
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/errors.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Errors
+    FatalException = Class.new(::RuntimeError)
+
+    InvalidThemeName = Class.new(FatalException)
+
+    DropMutationException       = Class.new(FatalException)
+    InvalidPermalinkError       = Class.new(FatalException)
+    InvalidYAMLFrontMatterError = Class.new(FatalException)
+    MissingDependencyException  = Class.new(FatalException)
+
+    InvalidDateError            = Class.new(FatalException)
+    InvalidPostNameError        = Class.new(FatalException)
+    PostURLError                = Class.new(FatalException)
+    InvalidURLError             = Class.new(FatalException)
+    InvalidConfigurationError   = Class.new(FatalException)
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/excerpt.rb

@@ -0,0 +1,201 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Excerpt
+    extend Forwardable
+
+    attr_accessor :doc
+    attr_accessor :content, :ext
+    attr_writer   :output
+
+    def_delegators :@doc,
+                   :site, :name, :ext, :extname,
+                   :collection, :related_posts, :type,
+                   :coffeescript_file?, :yaml_file?,
+                   :url, :next_doc, :previous_doc
+
+    private :coffeescript_file?, :yaml_file?
+
+    # Initialize this Excerpt instance.
+    #
+    # doc - The Document.
+    #
+    # Returns the new Excerpt.
+    def initialize(doc)
+      self.doc = doc
+      self.content = extract_excerpt(doc.content)
+    end
+
+    # Fetch YAML front-matter data from related doc, without layout key
+    #
+    # Returns Hash of doc data
+    def data
+      @data ||= doc.data.dup
+      @data.delete("layout")
+      @data.delete("excerpt")
+      @data
+    end
+
+    def trigger_hooks(*); end
+
+    # 'Path' of the excerpt.
+    #
+    # Returns the path for the doc this excerpt belongs to with #excerpt appended
+    def path
+      File.join(doc.path, "#excerpt")
+    end
+
+    # 'Relative Path' of the excerpt.
+    #
+    # Returns the relative_path for the doc this excerpt belongs to with #excerpt appended
+    def relative_path
+      @relative_path ||= File.join(doc.relative_path, "#excerpt")
+    end
+
+    # Check if excerpt includes a string
+    #
+    # Returns true if the string passed in
+    def include?(something)
+      output&.include?(something) || content.include?(something)
+    end
+
+    # The UID for this doc (useful in feeds).
+    # e.g. /2008/11/05/my-awesome-doc
+    #
+    # Returns the String UID.
+    def id
+      "#{doc.id}#excerpt"
+    end
+
+    def to_s
+      output || content
+    end
+
+    def to_liquid
+      Jekyll::Drops::ExcerptDrop.new(self)
+    end
+
+    # Returns the shorthand String identifier of this doc.
+    def inspect
+      "<#{self.class} id=#{id}>"
+    end
+
+    def output
+      @output ||= Renderer.new(doc.site, self, site.site_payload).run
+    end
+
+    def place_in_layout?
+      false
+    end
+
+    def render_with_liquid?
+      return false if data["render_with_liquid"] == false
+
+      !(coffeescript_file? || yaml_file? || !Utils.has_liquid_construct?(content))
+    end
+
+    protected
+
+    # Internal: Extract excerpt from the content
+    #
+    # By default excerpt is your first paragraph of a doc: everything before
+    # the first two new lines:
+    #
+    #     ---
+    #     title: Example
+    #     ---
+    #
+    #     First paragraph with [link][1].
+    #
+    #     Second paragraph.
+    #
+    #     [1]: http://example.com/
+    #
+    # This is fairly good option for Markdown and Textile files. But might cause
+    # problems for HTML docs (which is quite unusual for Jekyll). If default
+    # excerpt delimiter is not good for you, you might want to set your own via
+    # configuration option `excerpt_separator`. For example, following is a good
+    # alternative for HTML docs:
+    #
+    #     # file: _config.yml
+    #     excerpt_separator: "<!-- more -->"
+    #
+    # Notice that all markdown-style link references will be appended to the
+    # excerpt. So the example doc above will have this excerpt source:
+    #
+    #     First paragraph with [link][1].
+    #
+    #     [1]: http://example.com/
+    #
+    # Excerpts are rendered same time as content is rendered.
+    #
+    # Returns excerpt String
+
+    LIQUID_TAG_REGEX = %r!{%-?\s*(\w+)\s*.*?-?%}!m.freeze
+    MKDWN_LINK_REF_REGEX = %r!^ {0,3}(?:(\[[^\]]+\])(:.+))$!.freeze
+
+    def extract_excerpt(doc_content)
+      head, _, tail = doc_content.to_s.partition(doc.excerpt_separator)
+      return head if tail.empty?
+
+      head = sanctify_liquid_tags(head) if head.include?("{%")
+      definitions = extract_markdown_link_reference_defintions(head, tail)
+      return head if definitions.empty?
+
+      head << "\n\n" << definitions.join("\n")
+    end
+
+    private
+
+    # append appropriate closing tag(s) (for each Liquid block), to the `head` if the
+    # partitioning resulted in leaving the closing tag somewhere in the `tail` partition.
+    def sanctify_liquid_tags(head)
+      modified  = false
+      tag_names = head.scan(LIQUID_TAG_REGEX)
+      tag_names.flatten!
+      tag_names.reverse_each do |tag_name|
+        next unless liquid_block?(tag_name)
+        next if endtag_regex_stash(tag_name).match?(head)
+
+        modified = true
+        head << "\n{% end#{tag_name} %}"
+      end
+
+      print_build_warning if modified
+      head
+    end
+
+    def extract_markdown_link_reference_defintions(head, tail)
+      [].tap do |definitions|
+        tail.scan(MKDWN_LINK_REF_REGEX).each do |segments|
+          definitions << segments.join if head.include?(segments[0])
+        end
+      end
+    end
+
+    def endtag_regex_stash(tag_name)
+      @endtag_regex_stash ||= {}
+      @endtag_regex_stash[tag_name] ||= %r!{%-?\s*end#{tag_name}.*?\s*-?%}!m
+    end
+
+    def liquid_block?(tag_name)
+      return false unless tag_name.is_a?(String)
+      return false unless Liquid::Template.tags[tag_name]
+
+      Liquid::Template.tags[tag_name].ancestors.include?(Liquid::Block)
+    rescue NoMethodError
+      Jekyll.logger.error "Error:",
+                          "A Liquid tag in the excerpt of #{doc.relative_path} couldn't be parsed."
+      raise
+    end
+
+    def print_build_warning
+      Jekyll.logger.warn "Warning:", "Excerpt modified in #{doc.relative_path}!"
+      Jekyll.logger.warn "", "Found a Liquid block containing the excerpt separator" \
+                         " #{doc.excerpt_separator.inspect}. "
+      Jekyll.logger.warn "", "The block has been modified with the appropriate closing tag."
+      Jekyll.logger.warn "", "Feel free to define a custom excerpt or excerpt_separator in the"
+      Jekyll.logger.warn "", "document's Front Matter if the generated excerpt is unsatisfactory."
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/external.rb

@@ -0,0 +1,79 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module External
+    class << self
+      #
+      # Gems that, if installed, should be loaded.
+      # Usually contain subcommands.
+      #
+      def blessed_gems
+        %w(
+          jekyll-compose
+          jekyll-docs
+          jekyll-import
+        )
+      end
+
+      #
+      # Require a gem or file if it's present, otherwise silently fail.
+      #
+      # names - a string gem name or array of gem names
+      #
+      def require_if_present(names)
+        Array(names).each do |name|
+          begin
+            require name
+          rescue LoadError
+            Jekyll.logger.debug "Couldn't load #{name}. Skipping."
+            yield(name, version_constraint(name)) if block_given?
+            false
+          end
+        end
+      end
+
+      #
+      # The version constraint required to activate a given gem.
+      # Usually the gem version requirement is "> 0," because any version
+      # will do. In the case of jekyll-docs, however, we require the exact
+      # same version as Jekyll.
+      #
+      # Returns a String version constraint in a parseable form for
+      # RubyGems.
+      def version_constraint(gem_name)
+        return "= #{Jekyll::VERSION}" if gem_name.to_s.eql?("jekyll-docs")
+
+        "> 0"
+      end
+
+      #
+      # Require a gem or gems. If it's not present, show a very nice error
+      # message that explains everything and is much more helpful than the
+      # normal LoadError.
+      #
+      # names - a string gem name or array of gem names
+      #
+      def require_with_graceful_fail(names)
+        Array(names).each do |name|
+          begin
+            Jekyll.logger.debug "Requiring:", name.to_s
+            require name
+          rescue LoadError => e
+            Jekyll.logger.error "Dependency Error:", <<~MSG
+              Yikes! It looks like you don't have #{name} or one of its dependencies installed.
+              In order to use Jekyll as currently configured, you'll need to install this gem.
+
+              If you've run Jekyll with `bundle exec`, ensure that you have included the #{name}
+              gem in your Gemfile as well.
+
+              The full error message from Ruby is: '#{e.message}'
+
+              If you run into trouble, you can find helpful resources at https://jekyllrb.com/help/!
+            MSG
+            raise Jekyll::Errors::MissingDependencyException, name
+          end
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/filters.rb

@@ -0,0 +1,535 @@
+# frozen_string_literal: true
+
+require_all "jekyll/filters"
+
+module Jekyll
+  module Filters
+    include URLFilters
+    include GroupingFilters
+    include DateFilters
+
+    # Convert a Markdown string into HTML output.
+    #
+    # input - The Markdown String to convert.
+    #
+    # Returns the HTML formatted String.
+    def markdownify(input)
+      @context.registers[:site].find_converter_instance(
+        Jekyll::Converters::Markdown
+      ).convert(input.to_s)
+    end
+
+    # Convert quotes into smart quotes.
+    #
+    # input - The String to convert.
+    #
+    # Returns the smart-quotified String.
+    def smartify(input)
+      @context.registers[:site].find_converter_instance(
+        Jekyll::Converters::SmartyPants
+      ).convert(input.to_s)
+    end
+
+    # Convert a Sass string into CSS output.
+    #
+    # input - The Sass String to convert.
+    #
+    # Returns the CSS formatted String.
+    def sassify(input)
+      @context.registers[:site].find_converter_instance(
+        Jekyll::Converters::Sass
+      ).convert(input)
+    end
+
+    # Convert a Scss string into CSS output.
+    #
+    # input - The Scss String to convert.
+    #
+    # Returns the CSS formatted String.
+    def scssify(input)
+      @context.registers[:site].find_converter_instance(
+        Jekyll::Converters::Scss
+      ).convert(input)
+    end
+
+    # Slugify a filename or title.
+    #
+    # input - The filename or title to slugify.
+    # mode - how string is slugified
+    #
+    # Returns the given filename or title as a lowercase URL String.
+    # See Utils.slugify for more detail.
+    def slugify(input, mode = nil)
+      Utils.slugify(input, :mode => mode)
+    end
+
+    # XML escape a string for use. Replaces any special characters with
+    # appropriate HTML entity replacements.
+    #
+    # input - The String to escape.
+    #
+    # Examples
+    #
+    #   xml_escape('foo "bar" <baz>')
+    #   # => "foo &quot;bar&quot; &lt;baz&gt;"
+    #
+    # Returns the escaped String.
+    def xml_escape(input)
+      input.to_s.encode(:xml => :attr).gsub(%r!\A"|"\Z!, "")
+    end
+
+    # CGI escape a string for use in a URL. Replaces any special characters
+    # with appropriate %XX replacements.
+    #
+    # input - The String to escape.
+    #
+    # Examples
+    #
+    #   cgi_escape('foo,bar;baz?')
+    #   # => "foo%2Cbar%3Bbaz%3F"
+    #
+    # Returns the escaped String.
+    def cgi_escape(input)
+      CGI.escape(input)
+    end
+
+    # URI escape a string.
+    #
+    # input - The String to escape.
+    #
+    # Examples
+    #
+    #   uri_escape('foo, bar \\baz?')
+    #   # => "foo,%20bar%20%5Cbaz?"
+    #
+    # Returns the escaped String.
+    def uri_escape(input)
+      Addressable::URI.normalize_component(input)
+    end
+
+    # Replace any whitespace in the input string with a single space
+    #
+    # input - The String on which to operate.
+    #
+    # Returns the formatted String
+    def normalize_whitespace(input)
+      input.to_s.gsub(%r!\s+!, " ").tap(&:strip!)
+    end
+
+    # Count the number of words in the input string.
+    #
+    # input - The String on which to operate.
+    #
+    # Returns the Integer word count.
+    def number_of_words(input, mode = nil)
+      cjk_charset = '\p{Han}\p{Katakana}\p{Hiragana}\p{Hangul}'
+      cjk_regex = %r![#{cjk_charset}]!o
+      word_regex = %r![^#{cjk_charset}\s]+!o
+
+      case mode
+      when "cjk"
+        input.scan(cjk_regex).length + input.scan(word_regex).length
+      when "auto"
+        cjk_count = input.scan(cjk_regex).length
+        cjk_count.zero? ? input.split.length : cjk_count + input.scan(word_regex).length
+      else
+        input.split.length
+      end
+    end
+
+    # Join an array of things into a string by separating with commas and the
+    # word "and" for the last one.
+    #
+    # array - The Array of Strings to join.
+    # connector - Word used to connect the last 2 items in the array
+    #
+    # Examples
+    #
+    #   array_to_sentence_string(["apples", "oranges", "grapes"])
+    #   # => "apples, oranges, and grapes"
+    #
+    # Returns the formatted String.
+    def array_to_sentence_string(array, connector = "and")
+      case array.length
+      when 0
+        ""
+      when 1
+        array[0].to_s
+      when 2
+        "#{array[0]} #{connector} #{array[1]}"
+      else
+        "#{array[0...-1].join(", ")}, #{connector} #{array[-1]}"
+      end
+    end
+
+    # Convert the input into json string
+    #
+    # input - The Array or Hash to be converted
+    #
+    # Returns the converted json string
+    def jsonify(input)
+      as_liquid(input).to_json
+    end
+
+    # Filter an array of objects
+    #
+    # input    - the object array.
+    # property - the property within each object to filter by.
+    # value    - the desired value.
+    #            Cannot be an instance of Array nor Hash since calling #to_s on them returns
+    #            their `#inspect` string object.
+    #
+    # Returns the filtered array of objects
+    def where(input, property, value)
+      return input if !property || value.is_a?(Array) || value.is_a?(Hash)
+      return input unless input.respond_to?(:select)
+
+      input    = input.values if input.is_a?(Hash)
+      input_id = input.hash
+
+      # implement a hash based on method parameters to cache the end-result
+      # for given parameters.
+      @where_filter_cache ||= {}
+      @where_filter_cache[input_id] ||= {}
+      @where_filter_cache[input_id][property] ||= {}
+
+      # stash or retrive results to return
+      @where_filter_cache[input_id][property][value] ||= begin
+        input.select do |object|
+          compare_property_vs_target(item_property(object, property), value)
+        end.to_a
+      end
+    end
+
+    # Filters an array of objects against an expression
+    #
+    # input - the object array
+    # variable - the variable to assign each item to in the expression
+    # expression - a Liquid comparison expression passed in as a string
+    #
+    # Returns the filtered array of objects
+    def where_exp(input, variable, expression)
+      return input unless input.respond_to?(:select)
+
+      input = input.values if input.is_a?(Hash) # FIXME
+
+      condition = parse_condition(expression)
+      @context.stack do
+        input.select do |object|
+          @context[variable] = object
+          condition.evaluate(@context)
+        end
+      end || []
+    end
+
+    # Search an array of objects and returns the first object that has the queried attribute
+    # with the given value or returns nil otherwise.
+    #
+    # input    - the object array.
+    # property - the property within each object to search by.
+    # value    - the desired value.
+    #            Cannot be an instance of Array nor Hash since calling #to_s on them returns
+    #            their `#inspect` string object.
+    #
+    # Returns the found object or nil
+    #
+    # rubocop:disable Metrics/CyclomaticComplexity
+    def find(input, property, value)
+      return input if !property || value.is_a?(Array) || value.is_a?(Hash)
+      return input unless input.respond_to?(:find)
+
+      input    = input.values if input.is_a?(Hash)
+      input_id = input.hash
+
+      # implement a hash based on method parameters to cache the end-result for given parameters.
+      @find_filter_cache ||= {}
+      @find_filter_cache[input_id] ||= {}
+      @find_filter_cache[input_id][property] ||= {}
+
+      # stash or retrive results to return
+      # Since `enum.find` can return nil or false, we use a placeholder string "<__NO MATCH__>"
+      #   to validate caching.
+      result = @find_filter_cache[input_id][property][value] ||= begin
+        input.find do |object|
+          compare_property_vs_target(item_property(object, property), value)
+        end || "<__NO MATCH__>"
+      end
+      return nil if result == "<__NO MATCH__>"
+
+      result
+    end
+    # rubocop:enable Metrics/CyclomaticComplexity
+
+    # Searches an array of objects against an expression and returns the first object for which
+    # the expression evaluates to true, or returns nil otherwise.
+    #
+    # input - the object array
+    # variable - the variable to assign each item to in the expression
+    # expression - a Liquid comparison expression passed in as a string
+    #
+    # Returns the found object or nil
+    def find_exp(input, variable, expression)
+      return input unless input.respond_to?(:find)
+
+      input = input.values if input.is_a?(Hash)
+
+      condition = parse_condition(expression)
+      @context.stack do
+        input.find do |object|
+          @context[variable] = object
+          condition.evaluate(@context)
+        end
+      end
+    end
+
+    # Convert the input into integer
+    #
+    # input - the object string
+    #
+    # Returns the integer value
+    def to_integer(input)
+      return 1 if input == true
+      return 0 if input == false
+
+      input.to_i
+    end
+
+    # Sort an array of objects
+    #
+    # input - the object array
+    # property - property within each object to filter by
+    # nils ('first' | 'last') - nils appear before or after non-nil values
+    #
+    # Returns the filtered array of objects
+    def sort(input, property = nil, nils = "first")
+      raise ArgumentError, "Cannot sort a null object." if input.nil?
+
+      if property.nil?
+        input.sort
+      else
+        case nils
+        when "first"
+          order = - 1
+        when "last"
+          order = + 1
+        else
+          raise ArgumentError, "Invalid nils order: " \
+            "'#{nils}' is not a valid nils order. It must be 'first' or 'last'."
+        end
+
+        sort_input(input, property, order)
+      end
+    end
+
+    def pop(array, num = 1)
+      return array unless array.is_a?(Array)
+
+      num = Liquid::Utils.to_integer(num)
+      new_ary = array.dup
+      new_ary.pop(num)
+      new_ary
+    end
+
+    def push(array, input)
+      return array unless array.is_a?(Array)
+
+      new_ary = array.dup
+      new_ary.push(input)
+      new_ary
+    end
+
+    def shift(array, num = 1)
+      return array unless array.is_a?(Array)
+
+      num = Liquid::Utils.to_integer(num)
+      new_ary = array.dup
+      new_ary.shift(num)
+      new_ary
+    end
+
+    def unshift(array, input)
+      return array unless array.is_a?(Array)
+
+      new_ary = array.dup
+      new_ary.unshift(input)
+      new_ary
+    end
+
+    def sample(input, num = 1)
+      return input unless input.respond_to?(:sample)
+
+      num = Liquid::Utils.to_integer(num) rescue 1
+      if num == 1
+        input.sample
+      else
+        input.sample(num)
+      end
+    end
+
+    # Convert an object into its String representation for debugging
+    #
+    # input - The Object to be converted
+    #
+    # Returns a String representation of the object.
+    def inspect(input)
+      xml_escape(input.inspect)
+    end
+
+    private
+
+    # Sort the input Enumerable by the given property.
+    # If the property doesn't exist, return the sort order respective of
+    # which item doesn't have the property.
+    # We also utilize the Schwartzian transform to make this more efficient.
+    def sort_input(input, property, order)
+      input.map { |item| [item_property(item, property), item] }
+        .sort! do |a_info, b_info|
+          a_property = a_info.first
+          b_property = b_info.first
+
+          if !a_property.nil? && b_property.nil?
+            - order
+          elsif a_property.nil? && !b_property.nil?
+            + order
+          else
+            a_property <=> b_property || a_property.to_s <=> b_property.to_s
+          end
+        end
+        .map!(&:last)
+    end
+
+    # `where` filter helper
+    #
+    def compare_property_vs_target(property, target)
+      case target
+      when NilClass
+        return true if property.nil?
+      when Liquid::Expression::MethodLiteral # `empty` or `blank`
+        target = target.to_s
+        return true if property == target || Array(property).join == target
+      else
+        target = target.to_s
+        if property.is_a? String
+          return true if property == target
+        else
+          Array(property).each do |prop|
+            return true if prop.to_s == target
+          end
+        end
+      end
+
+      false
+    end
+
+    def item_property(item, property)
+      @item_property_cache ||= @context.registers[:site].filter_cache[:item_property] ||= {}
+      @item_property_cache[property] ||= {}
+      @item_property_cache[property][item] ||= begin
+        property = property.to_s
+        property = if item.respond_to?(:to_liquid)
+                     read_liquid_attribute(item.to_liquid, property)
+                   elsif item.respond_to?(:data)
+                     item.data[property]
+                   else
+                     item[property]
+                   end
+
+        parse_sort_input(property)
+      end
+    end
+
+    def read_liquid_attribute(liquid_data, property)
+      return liquid_data[property] unless property.include?(".")
+
+      property.split(".").reduce(liquid_data) do |data, key|
+        data.respond_to?(:[]) && data[key]
+      end
+    end
+
+    FLOAT_LIKE   = %r!\A\s*-?(?:\d+\.?\d*|\.\d+)\s*\Z!.freeze
+    INTEGER_LIKE = %r!\A\s*-?\d+\s*\Z!.freeze
+    private_constant :FLOAT_LIKE, :INTEGER_LIKE
+
+    # return numeric values as numbers for proper sorting
+    def parse_sort_input(property)
+      stringified = property.to_s
+      return property.to_i if INTEGER_LIKE.match?(stringified)
+      return property.to_f if FLOAT_LIKE.match?(stringified)
+
+      property
+    end
+
+    def as_liquid(item)
+      case item
+      when Hash
+        item.each_with_object({}) { |(k, v), result| result[as_liquid(k)] = as_liquid(v) }
+      when Array
+        item.map { |i| as_liquid(i) }
+      else
+        if item.respond_to?(:to_liquid)
+          liquidated = item.to_liquid
+          # prevent infinite recursion for simple types (which return `self`)
+          if liquidated == item
+            item
+          else
+            as_liquid(liquidated)
+          end
+        else
+          item
+        end
+      end
+    end
+
+    # -----------   The following set of code was *adapted* from Liquid::If
+    # -----------   ref: https://git.io/vp6K6
+
+    # Parse a string to a Liquid Condition
+    def parse_condition(exp)
+      parser    = Liquid::Parser.new(exp)
+      condition = parse_binary_comparison(parser)
+
+      parser.consume(:end_of_string)
+      condition
+    end
+
+    # Generate a Liquid::Condition object from a Liquid::Parser object additionally processing
+    # the parsed expression based on whether the expression consists of binary operations with
+    # Liquid operators `and` or `or`
+    #
+    #  - parser: an instance of Liquid::Parser
+    #
+    # Returns an instance of Liquid::Condition
+    def parse_binary_comparison(parser)
+      condition = parse_comparison(parser)
+      first_condition = condition
+      while (binary_operator = parser.id?("and") || parser.id?("or"))
+        child_condition = parse_comparison(parser)
+        condition.send(binary_operator, child_condition)
+        condition = child_condition
+      end
+      first_condition
+    end
+
+    # Generates a Liquid::Condition object from a Liquid::Parser object based on whether the parsed
+    # expression involves a "comparison" operator (e.g. <, ==, >, !=, etc)
+    #
+    #  - parser: an instance of Liquid::Parser
+    #
+    # Returns an instance of Liquid::Condition
+    def parse_comparison(parser)
+      left_operand = Liquid::Expression.parse(parser.expression)
+      operator     = parser.consume?(:comparison)
+
+      # No comparison-operator detected. Initialize a Liquid::Condition using only left operand
+      return Liquid::Condition.new(left_operand) unless operator
+
+      # Parse what remained after extracting the left operand and the `:comparison` operator
+      # and initialize a Liquid::Condition object using the operands and the comparison-operator
+      Liquid::Condition.new(left_operand, operator, Liquid::Expression.parse(parser.expression))
+    end
+  end
+end
+
+Liquid::Template.register_filter(
+  Jekyll::Filters
+)

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/filters/date_filters.rb

@@ -0,0 +1,110 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Filters
+    module DateFilters
+      # Format a date in short format e.g. "27 Jan 2011".
+      # Ordinal format is also supported, in both the UK
+      # (e.g. "27th Jan 2011") and US ("e.g. Jan 27th, 2011") formats.
+      # UK format is the default.
+      #
+      # date - the Time to format.
+      # type - if "ordinal" the returned String will be in ordinal format
+      # style - if "US" the returned String will be in US format.
+      #         Otherwise it will be in UK format.
+      #
+      # Returns the formatting String.
+      def date_to_string(date, type = nil, style = nil)
+        stringify_date(date, "%b", type, style)
+      end
+
+      # Format a date in long format e.g. "27 January 2011".
+      # Ordinal format is also supported, in both the UK
+      # (e.g. "27th January 2011") and US ("e.g. January 27th, 2011") formats.
+      # UK format is the default.
+      #
+      # date - the Time to format.
+      # type - if "ordinal" the returned String will be in ordinal format
+      # style - if "US" the returned String will be in US format.
+      #         Otherwise it will be in UK format.
+      #
+      # Returns the formatted String.
+      def date_to_long_string(date, type = nil, style = nil)
+        stringify_date(date, "%B", type, style)
+      end
+
+      # Format a date for use in XML.
+      #
+      # date - The Time to format.
+      #
+      # Examples
+      #
+      #   date_to_xmlschema(Time.now)
+      #   # => "2011-04-24T20:34:46+08:00"
+      #
+      # Returns the formatted String.
+      def date_to_xmlschema(date)
+        return date if date.to_s.empty?
+
+        time(date).xmlschema
+      end
+
+      # Format a date according to RFC-822
+      #
+      # date - The Time to format.
+      #
+      # Examples
+      #
+      #   date_to_rfc822(Time.now)
+      #   # => "Sun, 24 Apr 2011 12:34:46 +0000"
+      #
+      # Returns the formatted String.
+      def date_to_rfc822(date)
+        return date if date.to_s.empty?
+
+        time(date).rfc822
+      end
+
+      private
+
+      # month_type: Notations that evaluate to 'Month' via `Time#strftime` ("%b", "%B")
+      # type: nil (default) or "ordinal"
+      # style: nil (default) or "US"
+      #
+      # Returns a stringified date or the empty input.
+      def stringify_date(date, month_type, type = nil, style = nil)
+        return date if date.to_s.empty?
+
+        time = time(date)
+        if type == "ordinal"
+          day = time.day
+          ordinal_day = "#{day}#{ordinal(day)}"
+          return time.strftime("#{month_type} #{ordinal_day}, %Y") if style == "US"
+
+          return time.strftime("#{ordinal_day} #{month_type} %Y")
+        end
+        time.strftime("%d #{month_type} %Y")
+      end
+
+      def ordinal(number)
+        return "th" if (11..13).cover?(number)
+
+        case number % 10
+        when 1 then "st"
+        when 2 then "nd"
+        when 3 then "rd"
+        else "th"
+        end
+      end
+
+      def time(input)
+        date = Liquid::Utils.to_date(input)
+        unless date.respond_to?(:to_time)
+          raise Errors::InvalidDateError,
+                "Invalid Date: '#{input.inspect}' is not a valid datetime."
+        end
+        date.to_time.dup.localtime
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/filters/grouping_filters.rb

@@ -0,0 +1,64 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Filters
+    module GroupingFilters
+      # Group an array of items by a property
+      #
+      # input - the inputted Enumerable
+      # property - the property
+      #
+      # Returns an array of Hashes, each looking something like this:
+      #  {"name"  => "larry"
+      #   "items" => [...] } # all the items where `property` == "larry"
+      def group_by(input, property)
+        if groupable?(input)
+          groups = input.group_by { |item| item_property(item, property).to_s }
+          grouped_array(groups)
+        else
+          input
+        end
+      end
+
+      # Group an array of items by an expression
+      #
+      # input - the object array
+      # variable - the variable to assign each item to in the expression
+      # expression -a Liquid comparison expression passed in as a string
+      #
+      # Returns the filtered array of objects
+      def group_by_exp(input, variable, expression)
+        return input unless groupable?(input)
+
+        parsed_expr = parse_expression(expression)
+        @context.stack do
+          groups = input.group_by do |item|
+            @context[variable] = item
+            parsed_expr.render(@context)
+          end
+          grouped_array(groups)
+        end
+      end
+
+      private
+
+      def parse_expression(str)
+        Liquid::Variable.new(str, Liquid::ParseContext.new)
+      end
+
+      def groupable?(element)
+        element.respond_to?(:group_by)
+      end
+
+      def grouped_array(groups)
+        groups.each_with_object([]) do |item, array|
+          array << {
+            "name"  => item.first,
+            "items" => item.last,
+            "size"  => item.last.size,
+          }
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/filters/url_filters.rb

@@ -0,0 +1,98 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Filters
+    module URLFilters
+      # Produces an absolute URL based on site.url and site.baseurl.
+      #
+      # input - the URL to make absolute.
+      #
+      # Returns the absolute URL as a String.
+      def absolute_url(input)
+        return if input.nil?
+
+        cache = if input.is_a?(String)
+                  (@context.registers[:site].filter_cache[:absolute_url] ||= {})
+                else
+                  (@context.registers[:cached_absolute_url] ||= {})
+                end
+        cache[input] ||= compute_absolute_url(input)
+
+        # Duplicate cached string so that the cached value is never mutated by
+        # a subsequent filter.
+        cache[input].dup
+      end
+
+      # Produces a URL relative to the domain root based on site.baseurl
+      # unless it is already an absolute url with an authority (host).
+      #
+      # input - the URL to make relative to the domain root
+      #
+      # Returns a URL relative to the domain root as a String.
+      def relative_url(input)
+        return if input.nil?
+
+        cache = if input.is_a?(String)
+                  (@context.registers[:site].filter_cache[:relative_url] ||= {})
+                else
+                  (@context.registers[:cached_relative_url] ||= {})
+                end
+        cache[input] ||= compute_relative_url(input)
+
+        # Duplicate cached string so that the cached value is never mutated by
+        # a subsequent filter.
+        cache[input].dup
+      end
+
+      # Strips trailing `/index.html` from URLs to create pretty permalinks
+      #
+      # input - the URL with a possible `/index.html`
+      #
+      # Returns a URL with the trailing `/index.html` removed
+      def strip_index(input)
+        return if input.nil? || input.to_s.empty?
+
+        input.sub(%r!/index\.html?$!, "/")
+      end
+
+      private
+
+      def compute_absolute_url(input)
+        input = input.url if input.respond_to?(:url)
+        return input if Addressable::URI.parse(input.to_s).absolute?
+
+        site = @context.registers[:site]
+        site_url = site.config["url"]
+        return relative_url(input) if site_url.nil? || site_url == ""
+
+        Addressable::URI.parse(
+          site_url.to_s + relative_url(input)
+        ).normalize.to_s
+      end
+
+      def compute_relative_url(input)
+        input = input.url if input.respond_to?(:url)
+        return input if Addressable::URI.parse(input.to_s).absolute?
+
+        parts = [sanitized_baseurl, input]
+        Addressable::URI.parse(
+          parts.map! { |part| ensure_leading_slash(part.to_s) }.join
+        ).normalize.to_s
+      end
+
+      def sanitized_baseurl
+        site = @context.registers[:site]
+        baseurl = site.config["baseurl"]
+        return "" if baseurl.nil?
+
+        baseurl.to_s.chomp("/")
+      end
+
+      def ensure_leading_slash(input)
+        return input if input.nil? || input.empty? || input.start_with?("/")
+
+        "/#{input}"
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/frontmatter_defaults.rb

@@ -0,0 +1,240 @@
+# frozen_string_literal: true
+
+module Jekyll
+  # This class handles custom defaults for YAML frontmatter settings.
+  # These are set in _config.yml and apply both to internal use (e.g. layout)
+  # and the data available to liquid.
+  #
+  # It is exposed via the frontmatter_defaults method on the site class.
+  class FrontmatterDefaults
+    # Initializes a new instance.
+    def initialize(site)
+      @site = site
+    end
+
+    def reset
+      @glob_cache = {} if @glob_cache
+    end
+
+    def update_deprecated_types(set)
+      return set unless set.key?("scope") && set["scope"].key?("type")
+
+      set["scope"]["type"] =
+        case set["scope"]["type"]
+        when "page"
+          Deprecator.defaults_deprecate_type("page", "pages")
+          "pages"
+        when "post"
+          Deprecator.defaults_deprecate_type("post", "posts")
+          "posts"
+        when "draft"
+          Deprecator.defaults_deprecate_type("draft", "drafts")
+          "drafts"
+        else
+          set["scope"]["type"]
+        end
+
+      set
+    end
+
+    def ensure_time!(set)
+      return set unless set.key?("values") && set["values"].key?("date")
+      return set if set["values"]["date"].is_a?(Time)
+
+      set["values"]["date"] = Utils.parse_date(
+        set["values"]["date"],
+        "An invalid date format was found in a front-matter default set: #{set}"
+      )
+      set
+    end
+
+    # Finds a default value for a given setting, filtered by path and type
+    #
+    # path - the path (relative to the source) of the page,
+    # post or :draft the default is used in
+    # type - a symbol indicating whether a :page,
+    # a :post or a :draft calls this method
+    #
+    # Returns the default value or nil if none was found
+    def find(path, type, setting)
+      value = nil
+      old_scope = nil
+
+      matching_sets(path, type).each do |set|
+        if set["values"].key?(setting) && has_precedence?(old_scope, set["scope"])
+          value = set["values"][setting]
+          old_scope = set["scope"]
+        end
+      end
+      value
+    end
+
+    # Collects a hash with all default values for a page or post
+    #
+    # path - the relative path of the page or post
+    # type - a symbol indicating the type (:post, :page or :draft)
+    #
+    # Returns a hash with all default values (an empty hash if there are none)
+    def all(path, type)
+      defaults = {}
+      old_scope = nil
+      matching_sets(path, type).each do |set|
+        if has_precedence?(old_scope, set["scope"])
+          defaults = Utils.deep_merge_hashes(defaults, set["values"])
+          old_scope = set["scope"]
+        else
+          defaults = Utils.deep_merge_hashes(set["values"], defaults)
+        end
+      end
+      defaults
+    end
+
+    private
+
+    # Checks if a given default setting scope matches the given path and type
+    #
+    # scope - the hash indicating the scope, as defined in _config.yml
+    # path - the path to check for
+    # type - the type (:post, :page or :draft) to check for
+    #
+    # Returns true if the scope applies to the given type and path
+    def applies?(scope, path, type)
+      applies_type?(scope, type) && applies_path?(scope, path)
+    end
+
+    def applies_path?(scope, path)
+      rel_scope_path = scope["path"]
+      return true if !rel_scope_path.is_a?(String) || rel_scope_path.empty?
+
+      sanitized_path = sanitize_path(path)
+
+      if rel_scope_path.include?("*")
+        glob_scope(sanitized_path, rel_scope_path)
+      else
+        path_is_subpath?(sanitized_path, strip_collections_dir(rel_scope_path))
+      end
+    end
+
+    def glob_scope(sanitized_path, rel_scope_path)
+      site_source    = Pathname.new(@site.source)
+      abs_scope_path = site_source.join(rel_scope_path).to_s
+
+      glob_cache(abs_scope_path).each do |scope_path|
+        scope_path = Pathname.new(scope_path).relative_path_from(site_source).to_s
+        scope_path = strip_collections_dir(scope_path)
+        Jekyll.logger.debug "Globbed Scope Path:", scope_path
+        return true if path_is_subpath?(sanitized_path, scope_path)
+      end
+      false
+    end
+
+    def glob_cache(path)
+      @glob_cache ||= {}
+      @glob_cache[path] ||= Dir.glob(path)
+    end
+
+    def path_is_subpath?(path, parent_path)
+      path.start_with?(parent_path)
+    end
+
+    def strip_collections_dir(path)
+      collections_dir  = @site.config["collections_dir"]
+      slashed_coll_dir = collections_dir.empty? ? "/" : "#{collections_dir}/"
+      return path if collections_dir.empty? || !path.to_s.start_with?(slashed_coll_dir)
+
+      path.sub(slashed_coll_dir, "")
+    end
+
+    # Determines whether the scope applies to type.
+    # The scope applies to the type if:
+    #   1. no 'type' is specified
+    #   2. the 'type' in the scope is the same as the type asked about
+    #
+    # scope - the Hash defaults set being asked about application
+    # type  - the type of the document being processed / asked about
+    #         its defaults.
+    #
+    # Returns true if either of the above conditions are satisfied,
+    #   otherwise returns false
+    def applies_type?(scope, type)
+      !scope.key?("type") || type&.to_sym.eql?(scope["type"].to_sym)
+    end
+
+    # Checks if a given set of default values is valid
+    #
+    # set - the default value hash, as defined in _config.yml
+    #
+    # Returns true if the set is valid and can be used in this class
+    def valid?(set)
+      set.is_a?(Hash) && set["values"].is_a?(Hash)
+    end
+
+    # Determines if a new scope has precedence over an old one
+    #
+    # old_scope - the old scope hash, or nil if there's none
+    # new_scope - the new scope hash
+    #
+    # Returns true if the new scope has precedence over the older
+    # rubocop: disable Naming/PredicateName
+    def has_precedence?(old_scope, new_scope)
+      return true if old_scope.nil?
+
+      new_path = sanitize_path(new_scope["path"])
+      old_path = sanitize_path(old_scope["path"])
+
+      if new_path.length != old_path.length
+        new_path.length >= old_path.length
+      elsif new_scope.key?("type")
+        true
+      else
+        !old_scope.key? "type"
+      end
+    end
+    # rubocop: enable Naming/PredicateName
+
+    # Collects a list of sets that match the given path and type
+    #
+    # Returns an array of hashes
+    def matching_sets(path, type)
+      @matched_set_cache ||= {}
+      @matched_set_cache[path] ||= {}
+      @matched_set_cache[path][type] ||= begin
+        valid_sets.select do |set|
+          !set.key?("scope") || applies?(set["scope"], path, type)
+        end
+      end
+    end
+
+    # Returns a list of valid sets
+    #
+    # This is not cached to allow plugins to modify the configuration
+    # and have their changes take effect
+    #
+    # Returns an array of hashes
+    def valid_sets
+      sets = @site.config["defaults"]
+      return [] unless sets.is_a?(Array)
+
+      sets.map do |set|
+        if valid?(set)
+          ensure_time!(update_deprecated_types(set))
+        else
+          Jekyll.logger.warn "Defaults:", "An invalid front-matter default set was found:"
+          Jekyll.logger.warn set.to_s
+          nil
+        end
+      end.tap(&:compact!)
+    end
+
+    # Sanitizes the given path by removing a leading slash
+    def sanitize_path(path)
+      if path.nil? || path.empty?
+        ""
+      elsif path.start_with?("/")
+        path.gsub(%r!\A/|(?<=[^/])\z!, "")
+      else
+        path
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/generator.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+module Jekyll
+  Generator = Class.new(Plugin)
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/hooks.rb

@@ -0,0 +1,107 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Hooks
+    DEFAULT_PRIORITY = 20
+
+    # compatibility layer for octopress-hooks users
+    PRIORITY_MAP = {
+      :low    => 10,
+      :normal => 20,
+      :high   => 30,
+    }.freeze
+
+    # initial empty hooks
+    @registry = {
+      :site      => {
+        :after_init  => [],
+        :after_reset => [],
+        :post_read   => [],
+        :pre_render  => [],
+        :post_render => [],
+        :post_write  => [],
+      },
+      :pages     => {
+        :post_init    => [],
+        :pre_render   => [],
+        :post_convert => [],
+        :post_render  => [],
+        :post_write   => [],
+      },
+      :posts     => {
+        :post_init    => [],
+        :pre_render   => [],
+        :post_convert => [],
+        :post_render  => [],
+        :post_write   => [],
+      },
+      :documents => {
+        :post_init    => [],
+        :pre_render   => [],
+        :post_convert => [],
+        :post_render  => [],
+        :post_write   => [],
+      },
+      :clean     => {
+        :on_obsolete => [],
+      },
+    }
+
+    # map of all hooks and their priorities
+    @hook_priority = {}
+
+    NotAvailable = Class.new(RuntimeError)
+    Uncallable = Class.new(RuntimeError)
+
+    # register hook(s) to be called later, public API
+    def self.register(owners, event, priority: DEFAULT_PRIORITY, &block)
+      Array(owners).each do |owner|
+        register_one(owner, event, priority_value(priority), &block)
+      end
+    end
+
+    # Ensure the priority is a Fixnum
+    def self.priority_value(priority)
+      return priority if priority.is_a?(Integer)
+
+      PRIORITY_MAP[priority] || DEFAULT_PRIORITY
+    end
+
+    # register a single hook to be called later, internal API
+    def self.register_one(owner, event, priority, &block)
+      @registry[owner] ||= {
+        :post_init    => [],
+        :pre_render   => [],
+        :post_convert => [],
+        :post_render  => [],
+        :post_write   => [],
+      }
+
+      unless @registry[owner][event]
+        raise NotAvailable, "Invalid hook. #{owner} supports only the " \
+          "following hooks #{@registry[owner].keys.inspect}"
+      end
+
+      raise Uncallable, "Hooks must respond to :call" unless block.respond_to? :call
+
+      insert_hook owner, event, priority, &block
+    end
+
+    def self.insert_hook(owner, event, priority, &block)
+      @hook_priority[block] = [-priority, @hook_priority.size]
+      @registry[owner][event] << block
+    end
+
+    # interface for Jekyll core components to trigger hooks
+    def self.trigger(owner, event, *args)
+      # proceed only if there are hooks to call
+      hooks = @registry.dig(owner, event)
+      return if hooks.nil? || hooks.empty?
+
+      # sort and call hooks according to priority and load order
+      hooks.sort_by { |h| @hook_priority[h] }.each do |hook|
+        hook.call(*args)
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/inclusion.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Inclusion
+    attr_reader :site, :name, :path
+    private :site
+
+    def initialize(site, base, name)
+      @site = site
+      @name = name
+      @path = PathManager.join(base, name)
+    end
+
+    def render(context)
+      @template ||= site.liquid_renderer.file(path).parse(content)
+      @template.render!(context)
+    rescue Liquid::Error => e
+      e.template_name  = path
+      e.markup_context = "included " if e.markup_context.nil?
+      raise e
+    end
+
+    def content
+      @content ||= File.read(path, **site.file_read_opts)
+    end
+
+    def inspect
+      "#{self.class} #{path.inspect}"
+    end
+    alias_method :to_s, :inspect
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/layout.rb

@@ -0,0 +1,67 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Layout
+    include Convertible
+
+    # Gets the Site object.
+    attr_reader :site
+
+    # Gets the name of this layout.
+    attr_reader :name
+
+    # Gets the path to this layout.
+    attr_reader :path
+
+    # Gets the path to this layout relative to its base
+    attr_reader :relative_path
+
+    # Gets/Sets the extension of this layout.
+    attr_accessor :ext
+
+    # Gets/Sets the Hash that holds the metadata for this layout.
+    attr_accessor :data
+
+    # Gets/Sets the content of this layout.
+    attr_accessor :content
+
+    # Initialize a new Layout.
+    #
+    # site - The Site.
+    # base - The String path to the source.
+    # name - The String filename of the post file.
+    def initialize(site, base, name)
+      @site = site
+      @base = base
+      @name = name
+
+      if site.theme && site.theme.layouts_path.eql?(base)
+        @base_dir = site.theme.root
+        @path = site.in_theme_dir(base, name)
+      else
+        @base_dir = site.source
+        @path = site.in_source_dir(base, name)
+      end
+      @relative_path = @path.sub(@base_dir, "")
+
+      self.data = {}
+
+      process(name)
+      read_yaml(base, name)
+    end
+
+    # Extract information from the layout filename.
+    #
+    # name - The String filename of the layout file.
+    #
+    # Returns nothing.
+    def process(name)
+      self.ext = File.extname(name)
+    end
+
+    # Returns the object as a debug String.
+    def inspect
+      "#<#{self.class} @path=#{@path.inspect}>"
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/liquid_extensions.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module LiquidExtensions
+    # Lookup a Liquid variable in the given context.
+    #
+    # context  - the Liquid context in question.
+    # variable - the variable name, as a string.
+    #
+    # Returns the value of the variable in the context
+    #   or the variable name if not found.
+    def lookup_variable(context, variable)
+      lookup = context
+
+      variable.split(".").each do |value|
+        lookup = lookup[value]
+      end
+
+      lookup || variable
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/liquid_renderer.rb

@@ -0,0 +1,80 @@
+# frozen_string_literal: true
+
+require_relative "liquid_renderer/file"
+require_relative "liquid_renderer/table"
+
+module Jekyll
+  class LiquidRenderer
+    def initialize(site)
+      @site = site
+      Liquid::Template.error_mode = @site.config["liquid"]["error_mode"].to_sym
+      reset
+    end
+
+    def reset
+      @stats = {}
+      @cache = {}
+    end
+
+    def file(filename)
+      filename = normalize_path(filename)
+      LiquidRenderer::File.new(self, filename).tap do
+        @stats[filename] ||= new_profile_hash
+      end
+    end
+
+    def increment_bytes(filename, bytes)
+      @stats[filename][:bytes] += bytes
+    end
+
+    def increment_time(filename, time)
+      @stats[filename][:time] += time
+    end
+
+    def increment_count(filename)
+      @stats[filename][:count] += 1
+    end
+
+    def stats_table(num_of_rows = 50)
+      LiquidRenderer::Table.new(@stats).to_s(num_of_rows)
+    end
+
+    def self.format_error(error, path)
+      "#{error.message} in #{path}"
+    end
+
+    # A persistent cache to store and retrieve parsed templates based on the filename
+    # via `LiquidRenderer::File#parse`
+    #
+    # It is emptied when `self.reset` is called.
+    def cache
+      @cache ||= {}
+    end
+
+    private
+
+    def normalize_path(filename)
+      @normalize_path ||= {}
+      @normalize_path[filename] ||= begin
+        theme_dir = @site.theme&.root
+        case filename
+        when %r!\A(#{Regexp.escape(@site.source)}/)(?<rest>.*)!io
+          Regexp.last_match(:rest)
+        when %r!(/gems/.*)*/gems/(?<dirname>[^/]+)(?<rest>.*)!,
+             %r!(?<dirname>[^/]+/lib)(?<rest>.*)!
+          "#{Regexp.last_match(:dirname)}#{Regexp.last_match(:rest)}"
+        when theme_dir && %r!\A#{Regexp.escape(theme_dir)}/(?<rest>.*)!io
+          PathManager.join(@site.theme.basename, Regexp.last_match(:rest))
+        when %r!\A/(.*)!
+          Regexp.last_match(1)
+        else
+          filename
+        end
+      end
+    end
+
+    def new_profile_hash
+      Hash.new { |hash, key| hash[key] = 0 }
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/liquid_renderer/file.rb

@@ -0,0 +1,77 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class LiquidRenderer
+    class File
+      def initialize(renderer, filename)
+        @renderer = renderer
+        @filename = filename
+      end
+
+      def parse(content)
+        measure_time do
+          @renderer.cache[@filename] ||= Liquid::Template.parse(content, :line_numbers => true)
+        end
+        @template = @renderer.cache[@filename]
+
+        self
+      end
+
+      def render(*args)
+        reset_template_assigns
+
+        measure_time do
+          measure_bytes do
+            measure_counts do
+              @template.render(*args)
+            end
+          end
+        end
+      end
+
+      # This method simply 'rethrows any error' before attempting to render the template.
+      def render!(*args)
+        reset_template_assigns
+
+        measure_time do
+          measure_bytes do
+            measure_counts do
+              @template.render!(*args)
+            end
+          end
+        end
+      end
+
+      def warnings
+        @template.warnings
+      end
+
+      private
+
+      # clear assigns to `Liquid::Template` instance prior to rendering since
+      # `Liquid::Template` instances are cached in Jekyll 4.
+      def reset_template_assigns
+        @template.instance_assigns.clear
+      end
+
+      def measure_counts
+        @renderer.increment_count(@filename)
+        yield
+      end
+
+      def measure_bytes
+        yield.tap do |str|
+          @renderer.increment_bytes(@filename, str.bytesize)
+        end
+      end
+
+      def measure_time
+        before = Time.now
+        yield
+      ensure
+        after = Time.now
+        @renderer.increment_time(@filename, after - before)
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/liquid_renderer/table.rb

@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class LiquidRenderer
+    class Table
+      GAUGES = [:count, :bytes, :time].freeze
+
+      def initialize(stats)
+        @stats = stats
+      end
+
+      def to_s(num_of_rows = 50)
+        Jekyll::Profiler.tabulate(data_for_table(num_of_rows))
+      end
+
+      private
+
+      # rubocop:disable Metrics/AbcSize
+      def data_for_table(num_of_rows)
+        sorted = @stats.sort_by { |_, file_stats| -file_stats[:time] }
+        sorted = sorted.slice(0, num_of_rows)
+
+        table  = [header_labels]
+        totals = Hash.new { |hash, key| hash[key] = 0 }
+
+        sorted.each do |filename, file_stats|
+          GAUGES.each { |gauge| totals[gauge] += file_stats[gauge] }
+          row = []
+          row << filename
+          row << file_stats[:count].to_s
+          row << format_bytes(file_stats[:bytes])
+          row << format("%.3f", file_stats[:time])
+          table << row
+        end
+
+        footer = []
+        footer << "TOTAL (for #{sorted.size} files)"
+        footer << totals[:count].to_s
+        footer << format_bytes(totals[:bytes])
+        footer << format("%.3f", totals[:time])
+        table  << footer
+      end
+      # rubocop:enable Metrics/AbcSize
+
+      def header_labels
+        GAUGES.map { |gauge| gauge.to_s.capitalize }.unshift("Filename")
+      end
+
+      def format_bytes(bytes)
+        bytes /= 1024.0
+        format("%.2fK", bytes)
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/log_adapter.rb

@@ -0,0 +1,151 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class LogAdapter
+    attr_reader :writer, :messages, :level
+
+    LOG_LEVELS = {
+      :debug => ::Logger::DEBUG,
+      :info  => ::Logger::INFO,
+      :warn  => ::Logger::WARN,
+      :error => ::Logger::ERROR,
+    }.freeze
+
+    # Public: Create a new instance of a log writer
+    #
+    # writer - Logger compatible instance
+    # log_level - (optional, symbol) the log level
+    #
+    # Returns nothing
+    def initialize(writer, level = :info)
+      @messages = []
+      @writer = writer
+      self.log_level = level
+    end
+
+    # Public: Set the log level on the writer
+    #
+    # level - (symbol) the log level
+    #
+    # Returns nothing
+    def log_level=(level)
+      writer.level = level if level.is_a?(Integer) && level.between?(0, 3)
+      writer.level = LOG_LEVELS[level] ||
+        raise(ArgumentError, "unknown log level")
+      @level = level
+    end
+
+    def adjust_verbosity(options = {})
+      # Quiet always wins.
+      if options[:quiet]
+        self.log_level = :error
+      elsif options[:verbose]
+        self.log_level = :debug
+      end
+      debug "Logging at level:", LOG_LEVELS.key(writer.level).to_s
+      debug "Jekyll Version:", Jekyll::VERSION
+    end
+
+    # Public: Print a debug message
+    #
+    # topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc.
+    # message - the message detail
+    #
+    # Returns nothing
+    def debug(topic, message = nil, &block)
+      write(:debug, topic, message, &block)
+    end
+
+    # Public: Print a message
+    #
+    # topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc.
+    # message - the message detail
+    #
+    # Returns nothing
+    def info(topic, message = nil, &block)
+      write(:info, topic, message, &block)
+    end
+
+    # Public: Print a message
+    #
+    # topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc.
+    # message - the message detail
+    #
+    # Returns nothing
+    def warn(topic, message = nil, &block)
+      write(:warn, topic, message, &block)
+    end
+
+    # Public: Print an error message
+    #
+    # topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc.
+    # message - the message detail
+    #
+    # Returns nothing
+    def error(topic, message = nil, &block)
+      write(:error, topic, message, &block)
+    end
+
+    # Public: Print an error message and immediately abort the process
+    #
+    # topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc.
+    # message - the message detail (can be omitted)
+    #
+    # Returns nothing
+    def abort_with(topic, message = nil, &block)
+      error(topic, message, &block)
+      abort
+    end
+
+    # Internal: Build a topic method
+    #
+    # topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc.
+    # message - the message detail
+    #
+    # Returns the formatted message
+    def message(topic, message = nil)
+      raise ArgumentError, "block or message, not both" if block_given? && message
+
+      message = yield if block_given?
+      message = message.to_s.gsub(%r!\s+!, " ")
+      topic = formatted_topic(topic, block_given?)
+      out = topic + message
+      messages << out
+      out
+    end
+
+    # Internal: Format the topic
+    #
+    # topic - the topic of the message, e.g. "Configuration file", "Deprecation", etc.
+    # colon -
+    #
+    # Returns the formatted topic statement
+    def formatted_topic(topic, colon = false)
+      "#{topic}#{colon ? ": " : " "}".rjust(20)
+    end
+
+    # Internal: Check if the message should be written given the log level.
+    #
+    # level_of_message - the Symbol level of message, one of :debug, :info, :warn, :error
+    #
+    # Returns whether the message should be written.
+    def write_message?(level_of_message)
+      LOG_LEVELS.fetch(level) <= LOG_LEVELS.fetch(level_of_message)
+    end
+
+    # Internal: Log a message.
+    #
+    # level_of_message - the Symbol level of message, one of :debug, :info, :warn, :error
+    # topic - the String topic or full message
+    # message - the String message (optional)
+    # block - a block containing the message (optional)
+    #
+    # Returns false if the message was not written, otherwise returns the value of calling
+    # the appropriate writer method, e.g. writer.info.
+    def write(level_of_message, topic, message = nil, &block)
+      return false unless write_message?(level_of_message)
+
+      writer.public_send(level_of_message, message(topic, message, &block))
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/mime.types

@@ -0,0 +1,867 @@
+# Woah there. Do not edit this file directly.
+# This file is generated automatically by script/vendor-mimes.
+
+application/andrew-inset                                                  ez
+application/applixware                                                    aw
+application/atom+xml                                                      atom
+application/atomcat+xml                                                   atomcat
+application/atomsvc+xml                                                   atomsvc
+application/bdoc                                                          bdoc
+application/ccxml+xml                                                     ccxml
+application/cdmi-capability                                               cdmia
+application/cdmi-container                                                cdmic
+application/cdmi-domain                                                   cdmid
+application/cdmi-object                                                   cdmio
+application/cdmi-queue                                                    cdmiq
+application/cu-seeme                                                      cu
+application/dash+xml                                                      mpd
+application/davmount+xml                                                  davmount
+application/docbook+xml                                                   dbk
+application/dssc+der                                                      dssc
+application/dssc+xml                                                      xdssc
+application/ecmascript                                                    ecma es
+application/emma+xml                                                      emma
+application/epub+zip                                                      epub
+application/exi                                                           exi
+application/font-tdpfr                                                    pfr
+application/geo+json                                                      geojson
+application/gml+xml                                                       gml
+application/gpx+xml                                                       gpx
+application/gxf                                                           gxf
+application/gzip                                                          gz
+application/hjson                                                         hjson
+application/hyperstudio                                                   stk
+application/inkml+xml                                                     ink inkml
+application/ipfix                                                         ipfix
+application/java-archive                                                  jar war ear
+application/java-serialized-object                                        ser
+application/java-vm                                                       class
+application/javascript                                                    js mjs
+application/json                                                          json map
+application/json5                                                         json5
+application/jsonml+json                                                   jsonml
+application/ld+json                                                       jsonld
+application/lost+xml                                                      lostxml
+application/mac-binhex40                                                  hqx
+application/mac-compactpro                                                cpt
+application/mads+xml                                                      mads
+application/manifest+json                                                 webmanifest
+application/marc                                                          mrc
+application/marcxml+xml                                                   mrcx
+application/mathematica                                                   ma nb mb
+application/mathml+xml                                                    mathml
+application/mbox                                                          mbox
+application/mediaservercontrol+xml                                        mscml
+application/metalink+xml                                                  metalink
+application/metalink4+xml                                                 meta4
+application/mets+xml                                                      mets
+application/mods+xml                                                      mods
+application/mp21                                                          m21 mp21
+application/mp4                                                           mp4s m4p
+application/msword                                                        doc dot
+application/mxf                                                           mxf
+application/n-quads                                                       nq
+application/n-triples                                                     nt
+application/octet-stream                                                  bin dms lrf mar so dist distz pkg bpk dump elc deploy exe dll deb dmg iso img msi msp msm buffer
+application/oda                                                           oda
+application/oebps-package+xml                                             opf
+application/ogg                                                           ogx
+application/omdoc+xml                                                     omdoc
+application/onenote                                                       onetoc onetoc2 onetmp onepkg
+application/oxps                                                          oxps
+application/patch-ops-error+xml                                           xer
+application/pdf                                                           pdf
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+application/x-msmetafile                                                  wmf emf emz
+application/x-msmoney                                                     mny
+application/x-mspublisher                                                 pub
+application/x-msschedule                                                  scd
+application/x-msterminal                                                  trm
+application/x-mswrite                                                     wri
+application/x-netcdf                                                      nc cdf
+application/x-ns-proxy-autoconfig                                         pac
+application/x-nzb                                                         nzb
+application/x-perl                                                        pl pm
+application/x-pkcs12                                                      p12 pfx
+application/x-pkcs7-certificates                                          p7b spc
+application/x-pkcs7-certreqresp                                           p7r
+application/x-rar-compressed                                              rar
+application/x-redhat-package-manager                                      rpm
+application/x-research-info-systems                                       ris
+application/x-sea                                                         sea
+application/x-sh                                                          sh
+application/x-shar                                                        shar
+application/x-shockwave-flash                                             swf
+application/x-silverlight-app                                             xap
+application/x-sql                                                         sql
+application/x-stuffit                                                     sit
+application/x-stuffitx                                                    sitx
+application/x-subrip                                                      srt
+application/x-sv4cpio                                                     sv4cpio
+application/x-sv4crc                                                      sv4crc
+application/x-t3vm-image                                                  t3
+application/x-tads                                                        gam
+application/x-tar                                                         tar
+application/x-tcl                                                         tcl tk
+application/x-tex                                                         tex
+application/x-tex-tfm                                                     tfm
+application/x-texinfo                                                     texinfo texi
+application/x-tgif                                                        obj
+application/x-ustar                                                       ustar
+application/x-virtualbox-hdd                                              hdd
+application/x-virtualbox-ova                                              ova
+application/x-virtualbox-ovf                                              ovf
+application/x-virtualbox-vbox                                             vbox
+application/x-virtualbox-vbox-extpack                                     vbox-extpack
+application/x-virtualbox-vdi                                              vdi
+application/x-virtualbox-vhd                                              vhd
+application/x-virtualbox-vmdk                                             vmdk
+application/x-wais-source                                                 src
+application/x-web-app-manifest+json                                       webapp
+application/x-x509-ca-cert                                                der crt pem
+application/x-xfig                                                        fig
+application/x-xliff+xml                                                   xlf
+application/x-xpinstall                                                   xpi
+application/x-xz                                                          xz
+application/x-zmachine                                                    z1 z2 z3 z4 z5 z6 z7 z8
+application/xaml+xml                                                      xaml
+application/xcap-diff+xml                                                 xdf
+application/xenc+xml                                                      xenc
+application/xhtml+xml                                                     xhtml xht
+application/xml                                                           xml xsl xsd rng
+application/xml-dtd                                                       dtd
+application/xop+xml                                                       xop
+application/xproc+xml                                                     xpl
+application/xslt+xml                                                      xslt
+application/xspf+xml                                                      xspf
+application/xv+xml                                                        mxml xhvml xvml xvm
+application/yang                                                          yang
+application/yin+xml                                                       yin
+application/zip                                                           zip
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+audio/adpcm                                                               adp
+audio/basic                                                               au snd
+audio/midi                                                                mid midi kar rmi
+audio/mp3                                                                 mp3
+audio/mp4                                                                 m4a mp4a
+audio/mpeg                                                                mpga mp2 mp2a m2a m3a
+audio/ogg                                                                 oga ogg spx
+audio/s3m                                                                 s3m
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+audio/vnd.nuera.ecelp7470                                                 ecelp7470
+audio/vnd.nuera.ecelp9600                                                 ecelp9600
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+audio/wav                                                                 wav
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+audio/x-aac                                                               aac
+audio/x-aiff                                                              aif aiff aifc
+audio/x-caf                                                               caf
+audio/x-flac                                                              flac
+audio/x-matroska                                                          mka
+audio/x-mpegurl                                                           m3u
+audio/x-ms-wax                                                            wax
+audio/x-ms-wma                                                            wma
+audio/x-pn-realaudio                                                      ram ra
+audio/x-pn-realaudio-plugin                                               rmp
+audio/xm                                                                  xm
+chemical/x-cdx                                                            cdx
+chemical/x-cif                                                            cif
+chemical/x-cmdf                                                           cmdf
+chemical/x-cml                                                            cml
+chemical/x-csml                                                           csml
+chemical/x-xyz                                                            xyz
+font/collection                                                           ttc
+font/otf                                                                  otf
+font/ttf                                                                  ttf
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+font/woff2                                                                woff2
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+image/g3fax                                                               g3
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+image/heic                                                                heic
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+image/heif-sequence                                                       heifs
+image/ief                                                                 ief
+image/jls                                                                 jls
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+image/jpeg                                                                jpeg jpg jpe
+image/jpm                                                                 jpm
+image/jpx                                                                 jpx jpf
+image/jxr                                                                 jxr
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+image/png                                                                 png
+image/prs.btif                                                            btif
+image/prs.pti                                                             pti
+image/sgi                                                                 sgi
+image/svg+xml                                                             svg svgz
+image/t38                                                                 t38
+image/tiff                                                                tif tiff
+image/tiff-fx                                                             tfx
+image/vnd.adobe.photoshop                                                 psd
+image/vnd.airzip.accelerator.azv                                          azv
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+image/vnd.djvu                                                            djvu djv
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+image/vnd.dwg                                                             dwg
+image/vnd.dxf                                                             dxf
+image/vnd.fastbidsheet                                                    fbs
+image/vnd.fpx                                                             fpx
+image/vnd.fst                                                             fst
+image/vnd.fujixerox.edmics-mmr                                            mmr
+image/vnd.fujixerox.edmics-rlc                                            rlc
+image/vnd.microsoft.icon                                                  ico
+image/vnd.ms-modi                                                         mdi
+image/vnd.ms-photo                                                        wdp
+image/vnd.net-fpx                                                         npx
+image/vnd.tencent.tap                                                     tap
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+image/vnd.wap.wbmp                                                        wbmp
+image/vnd.xiff                                                            xif
+image/vnd.zbrush.pcx                                                      pcx
+image/webp                                                                webp
+image/x-3ds                                                               3ds
+image/x-cmu-raster                                                        ras
+image/x-cmx                                                               cmx
+image/x-freehand                                                          fh fhc fh4 fh5 fh7
+image/x-jng                                                               jng
+image/x-mrsid-image                                                       sid
+image/x-pict                                                              pic pct
+image/x-portable-anymap                                                   pnm
+image/x-portable-bitmap                                                   pbm
+image/x-portable-graymap                                                  pgm
+image/x-portable-pixmap                                                   ppm
+image/x-rgb                                                               rgb
+image/x-tga                                                               tga
+image/x-xbitmap                                                           xbm
+image/x-xpixmap                                                           xpm
+image/x-xwindowdump                                                       xwd
+message/disposition-notification                                          disposition-notification
+message/global                                                            u8msg
+message/global-delivery-status                                            u8dsn
+message/global-disposition-notification                                   u8mdn
+message/global-headers                                                    u8hdr
+message/rfc822                                                            eml mime
+message/vnd.wfa.wsc                                                       wsc
+model/3mf                                                                 3mf
+model/gltf+json                                                           gltf
+model/gltf-binary                                                         glb
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+model/mesh                                                                msh mesh silo
+model/vnd.collada+xml                                                     dae
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+model/vnd.parasolid.transmit.binary                                       x_b
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+model/vnd.usdz+zip                                                        usdz
+model/vnd.valve.source.compiled-map                                       bsp
+model/vnd.vtu                                                             vtu
+model/vrml                                                                wrl vrml
+model/x3d+binary                                                          x3db x3dbz
+model/x3d+vrml                                                            x3dv x3dvz
+model/x3d+xml                                                             x3d x3dz
+text/cache-manifest                                                       appcache manifest
+text/calendar                                                             ics ifb
+text/coffeescript                                                         coffee litcoffee
+text/css                                                                  css
+text/csv                                                                  csv
+text/html                                                                 html htm shtml
+text/jade                                                                 jade
+text/jsx                                                                  jsx
+text/less                                                                 less
+text/markdown                                                             markdown md
+text/mathml                                                               mml
+text/mdx                                                                  mdx
+text/n3                                                                   n3
+text/plain                                                                txt text conf def list log in ini
+text/prs.lines.tag                                                        dsc
+text/richtext                                                             rtx
+text/sgml                                                                 sgml sgm
+text/shex                                                                 shex
+text/slim                                                                 slim slm
+text/stylus                                                               stylus styl
+text/tab-separated-values                                                 tsv
+text/troff                                                                t tr roff man me ms
+text/turtle                                                               ttl
+text/uri-list                                                             uri uris urls
+text/vcard                                                                vcard
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+text/vnd.in3d.spot                                                        spot
+text/vnd.sun.j2me.app-descriptor                                          jad
+text/vnd.wap.wml                                                          wml
+text/vnd.wap.wmlscript                                                    wmls
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+text/x-component                                                          htc
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+text/x-handlebars-template                                                hbs
+text/x-java-source                                                        java
+text/x-lua                                                                lua
+text/x-markdown                                                           mkd
+text/x-nfo                                                                nfo
+text/x-opml                                                               opml
+text/x-pascal                                                             p pas
+text/x-processing                                                         pde
+text/x-sass                                                               sass
+text/x-scss                                                               scss
+text/x-setext                                                             etx
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+text/x-suse-ymp                                                           ymp
+text/x-uuencode                                                           uu
+text/x-vcalendar                                                          vcs
+text/x-vcard                                                              vcf
+text/yaml                                                                 yaml yml
+video/3gpp                                                                3gp
+video/3gpp2                                                               3g2
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+video/mpeg                                                                mpeg mpg mpe m1v m2v
+video/ogg                                                                 ogv
+video/quicktime                                                           qt mov
+video/vnd.dece.hd                                                         uvh uvvh
+video/vnd.dece.mobile                                                     uvm uvvm
+video/vnd.dece.pd                                                         uvp uvvp
+video/vnd.dece.sd                                                         uvs uvvs
+video/vnd.dece.video                                                      uvv uvvv
+video/vnd.dvb.file                                                        dvb
+video/vnd.fvt                                                             fvt
+video/vnd.mpegurl                                                         mxu m4u
+video/vnd.ms-playready.media.pyv                                          pyv
+video/vnd.uvvu.mp4                                                        uvu uvvu
+video/vnd.vivo                                                            viv
+video/webm                                                                webm
+video/x-f4v                                                               f4v
+video/x-fli                                                               fli
+video/x-flv                                                               flv
+video/x-m4v                                                               m4v
+video/x-matroska                                                          mkv mk3d mks
+video/x-mng                                                               mng
+video/x-ms-asf                                                            asf asx
+video/x-ms-vob                                                            vob
+video/x-ms-wm                                                             wm
+video/x-ms-wmv                                                            wmv
+video/x-ms-wmx                                                            wmx
+video/x-ms-wvx                                                            wvx
+video/x-msvideo                                                           avi
+video/x-sgi-movie                                                         movie
+video/x-smv                                                               smv
+x-conference/x-cooltalk                                                   ice

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/page.rb

@@ -0,0 +1,217 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Page
+    include Convertible
+
+    attr_writer :dir
+    attr_accessor :site, :pager
+    attr_accessor :name, :ext, :basename
+    attr_accessor :data, :content, :output
+
+    alias_method :extname, :ext
+
+    # Attributes for Liquid templates
+    ATTRIBUTES_FOR_LIQUID = %w(
+      content
+      dir
+      excerpt
+      name
+      path
+      url
+    ).freeze
+
+    # A set of extensions that are considered HTML or HTML-like so we
+    # should not alter them,  this includes .xhtml through XHTM5.
+
+    HTML_EXTENSIONS = %w(
+      .html
+      .xhtml
+      .htm
+    ).freeze
+
+    # Initialize a new Page.
+    #
+    # site - The Site object.
+    # base - The String path to the source.
+    # dir  - The String path between the source and the file.
+    # name - The String filename of the file.
+    def initialize(site, base, dir, name)
+      @site = site
+      @base = base
+      @dir  = dir
+      @name = name
+      @path = if site.in_theme_dir(base) == base # we're in a theme
+                site.in_theme_dir(base, dir, name)
+              else
+                site.in_source_dir(base, dir, name)
+              end
+
+      process(name)
+      read_yaml(PathManager.join(base, dir), name)
+      generate_excerpt if site.config["page_excerpts"]
+
+      data.default_proc = proc do |_, key|
+        site.frontmatter_defaults.find(relative_path, type, key)
+      end
+
+      Jekyll::Hooks.trigger :pages, :post_init, self
+    end
+
+    # The generated directory into which the page will be placed
+    # upon generation. This is derived from the permalink or, if
+    # permalink is absent, will be '/'
+    #
+    # Returns the String destination directory.
+    def dir
+      url.end_with?("/") ? url : url_dir
+    end
+
+    # The full path and filename of the post. Defined in the YAML of the post
+    # body.
+    #
+    # Returns the String permalink or nil if none has been set.
+    def permalink
+      data.nil? ? nil : data["permalink"]
+    end
+
+    # The template of the permalink.
+    #
+    # Returns the template String.
+    def template
+      if !html?
+        "/:path/:basename:output_ext"
+      elsif index?
+        "/:path/"
+      else
+        Utils.add_permalink_suffix("/:path/:basename", site.permalink_style)
+      end
+    end
+
+    # The generated relative url of this page. e.g. /about.html.
+    #
+    # Returns the String url.
+    def url
+      @url ||= URL.new(
+        :template     => template,
+        :placeholders => url_placeholders,
+        :permalink    => permalink
+      ).to_s
+    end
+
+    # Returns a hash of URL placeholder names (as symbols) mapping to the
+    # desired placeholder replacements. For details see "url.rb"
+    def url_placeholders
+      {
+        :path       => @dir,
+        :basename   => basename,
+        :output_ext => output_ext,
+      }
+    end
+
+    # Extract information from the page filename.
+    #
+    # name - The String filename of the page file.
+    #
+    # NOTE: `String#gsub` removes all trailing periods (in comparison to `String#chomp`)
+    # Returns nothing.
+    def process(name)
+      return unless name
+
+      self.ext = File.extname(name)
+      self.basename = name[0..-ext.length - 1].gsub(%r!\.*\z!, "")
+    end
+
+    # Add any necessary layouts to this post
+    #
+    # layouts      - The Hash of {"name" => "layout"}.
+    # site_payload - The site payload Hash.
+    #
+    # Returns String rendered page.
+    def render(layouts, site_payload)
+      site_payload["page"] = to_liquid
+      site_payload["paginator"] = pager.to_liquid
+
+      do_layout(site_payload, layouts)
+    end
+
+    # The path to the source file
+    #
+    # Returns the path to the source file
+    def path
+      data.fetch("path") { relative_path }
+    end
+
+    # The path to the page source file, relative to the site source
+    def relative_path
+      @relative_path ||= PathManager.join(@dir, @name).sub(%r!\A/!, "")
+    end
+
+    # Obtain destination path.
+    #
+    # dest - The String path to the destination dir.
+    #
+    # Returns the destination file path String.
+    def destination(dest)
+      @destination ||= {}
+      @destination[dest] ||= begin
+        path = site.in_dest_dir(dest, URL.unescape_path(url))
+        path = File.join(path, "index") if url.end_with?("/")
+        path << output_ext unless path.end_with? output_ext
+        path
+      end
+    end
+
+    # Returns the object as a debug String.
+    def inspect
+      "#<#{self.class} @relative_path=#{relative_path.inspect}>"
+    end
+
+    # Returns the Boolean of whether this Page is HTML or not.
+    def html?
+      HTML_EXTENSIONS.include?(output_ext)
+    end
+
+    # Returns the Boolean of whether this Page is an index file or not.
+    def index?
+      basename == "index"
+    end
+
+    def trigger_hooks(hook_name, *args)
+      Jekyll::Hooks.trigger :pages, hook_name, self, *args
+    end
+
+    def write?
+      true
+    end
+
+    def excerpt_separator
+      @excerpt_separator ||= (data["excerpt_separator"] || site.config["excerpt_separator"]).to_s
+    end
+
+    def excerpt
+      return @excerpt if defined?(@excerpt)
+
+      @excerpt = data["excerpt"] ? data["excerpt"].to_s : nil
+    end
+
+    def generate_excerpt?
+      !excerpt_separator.empty? && instance_of?(Jekyll::Page) && html?
+    end
+
+    private
+
+    def generate_excerpt
+      return unless generate_excerpt?
+
+      data["excerpt"] ||= Jekyll::PageExcerpt.new(self)
+    end
+
+    def url_dir
+      @url_dir ||= begin
+        value = File.dirname(url)
+        value.end_with?("/") ? value : "#{value}/"
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/page_excerpt.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class PageExcerpt < Excerpt
+    attr_reader :doc
+    alias_method :id, :relative_path
+
+    EXCERPT_ATTRIBUTES = (Page::ATTRIBUTES_FOR_LIQUID - %w(excerpt)).freeze
+    private_constant :EXCERPT_ATTRIBUTES
+
+    def to_liquid
+      @to_liquid ||= doc.to_liquid(EXCERPT_ATTRIBUTES)
+    end
+
+    def render_with_liquid?
+      return false if data["render_with_liquid"] == false
+
+      Jekyll::Utils.has_liquid_construct?(content)
+    end
+
+    def inspect
+      "#<#{self.class} id=#{id.inspect}>"
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/page_without_a_file.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module Jekyll
+  # A Jekyll::Page subclass to handle processing files without reading it to
+  # determine the page-data and page-content based on Front Matter delimiters.
+  #
+  # The class instance is basically just a bare-bones entity with just
+  # attributes "dir", "name", "path", "url" defined on it.
+  class PageWithoutAFile < Page
+    def read_yaml(*)
+      @data ||= {}
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/path_manager.rb

@@ -0,0 +1,74 @@
+# frozen_string_literal: true
+
+module Jekyll
+  # A singleton class that caches frozen instances of path strings returned from its methods.
+  #
+  # NOTE:
+  #   This class exists because `File.join` allocates an Array and returns a new String on every
+  #   call using **the same arguments**. Caching the result means reduced memory usage.
+  #   However, the caches are never flushed so that they can be used even when a site is
+  #   regenerating. The results are frozen to deter mutation of the cached string.
+  #
+  #   Therefore, employ this class only for situations where caching the result is necessary
+  #   for performance reasons.
+  #
+  class PathManager
+    # This class cannot be initialized from outside
+    private_class_method :new
+
+    class << self
+      # Wraps `File.join` to cache the frozen result.
+      # Reassigns `nil`, empty strings and empty arrays to a frozen empty string beforehand.
+      #
+      # Returns a frozen string.
+      def join(base, item)
+        base = "" if base.nil? || base.empty?
+        item = "" if item.nil? || item.empty?
+        @join ||= {}
+        @join[base] ||= {}
+        @join[base][item] ||= File.join(base, item).freeze
+      end
+
+      # Ensures the questionable path is prefixed with the base directory
+      # and prepends the questionable path with the base directory if false.
+      #
+      # Returns a frozen string.
+      def sanitized_path(base_directory, questionable_path)
+        @sanitized_path ||= {}
+        @sanitized_path[base_directory] ||= {}
+        @sanitized_path[base_directory][questionable_path] ||= begin
+          if questionable_path.nil?
+            base_directory.freeze
+          else
+            sanitize_and_join(base_directory, questionable_path).freeze
+          end
+        end
+      end
+
+      private
+
+      def sanitize_and_join(base_directory, questionable_path)
+        clean_path = if questionable_path.start_with?("~")
+                       questionable_path.dup.insert(0, "/")
+                     else
+                       questionable_path
+                     end
+        clean_path = File.expand_path(clean_path, "/")
+        return clean_path if clean_path.eql?(base_directory)
+
+        # remove any remaining extra leading slashes not stripped away by calling
+        # `File.expand_path` above.
+        clean_path.squeeze!("/")
+        return clean_path if clean_path.start_with?(slashed_dir_cache(base_directory))
+
+        clean_path.sub!(%r!\A\w:/!, "/")
+        join(base_directory, clean_path)
+      end
+
+      def slashed_dir_cache(base_directory)
+        @slashed_dir_cache ||= {}
+        @slashed_dir_cache[base_directory] ||= base_directory.sub(%r!\z!, "/")
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/plugin.rb

@@ -0,0 +1,92 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Plugin
+    PRIORITIES = {
+      :low     => -10,
+      :highest => 100,
+      :lowest  => -100,
+      :normal  => 0,
+      :high    => 10,
+    }.freeze
+
+    #
+
+    def self.inherited(const)
+      catch_inheritance(const) do |const_|
+        catch_inheritance(const_)
+      end
+    end
+
+    #
+
+    def self.catch_inheritance(const)
+      const.define_singleton_method :inherited do |const_|
+        (@children ||= Set.new).add const_
+        yield const_ if block_given?
+      end
+    end
+
+    #
+
+    def self.descendants
+      @children ||= Set.new
+      out = @children.map(&:descendants)
+      out << self unless superclass == Plugin
+      Set.new(out).flatten
+    end
+
+    # Get or set the priority of this plugin. When called without an
+    # argument it returns the priority. When an argument is given, it will
+    # set the priority.
+    #
+    # priority - The Symbol priority (default: nil). Valid options are:
+    #            :lowest, :low, :normal, :high, :highest
+    #
+    # Returns the Symbol priority.
+    def self.priority(priority = nil)
+      @priority ||= nil
+      @priority = priority if priority && PRIORITIES.key?(priority)
+      @priority || :normal
+    end
+
+    # Get or set the safety of this plugin. When called without an argument
+    # it returns the safety. When an argument is given, it will set the
+    # safety.
+    #
+    # safe - The Boolean safety (default: nil).
+    #
+    # Returns the safety Boolean.
+    def self.safe(safe = nil)
+      @safe = safe unless defined?(@safe) && safe.nil?
+      @safe || false
+    end
+
+    # Spaceship is priority [higher -> lower]
+    #
+    # other - The class to be compared.
+    #
+    # Returns -1, 0, 1.
+    def self.<=>(other)
+      PRIORITIES[other.priority] <=> PRIORITIES[priority]
+    end
+
+    # Spaceship is priority [higher -> lower]
+    #
+    # other - The class to be compared.
+    #
+    # Returns -1, 0, 1.
+    def <=>(other)
+      self.class <=> other.class
+    end
+
+    # Initialize a new plugin. This should be overridden by the subclass.
+    #
+    # config - The Hash of configuration options.
+    #
+    # Returns a new instance.
+    def initialize(config = {})
+      # no-op for default
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/plugin_manager.rb

@@ -0,0 +1,115 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class PluginManager
+    attr_reader :site
+
+    # Create an instance of this class.
+    #
+    # site - the instance of Jekyll::Site we're concerned with
+    #
+    # Returns nothing
+    def initialize(site)
+      @site = site
+    end
+
+    # Require all the plugins which are allowed.
+    #
+    # Returns nothing
+    def conscientious_require
+      require_theme_deps if site.theme
+      require_plugin_files
+      require_gems
+      deprecation_checks
+    end
+
+    # Require each of the gem plugins specified.
+    #
+    # Returns nothing.
+    def require_gems
+      Jekyll::External.require_with_graceful_fail(
+        site.gems.select { |plugin| plugin_allowed?(plugin) }
+      )
+    end
+
+    # Require each of the runtime_dependencies specified by the theme's gemspec.
+    #
+    # Returns false only if no dependencies have been specified, otherwise nothing.
+    def require_theme_deps
+      return false unless site.theme.runtime_dependencies
+
+      site.theme.runtime_dependencies.each do |dep|
+        next if dep.name == "jekyll"
+
+        External.require_with_graceful_fail(dep.name) if plugin_allowed?(dep.name)
+      end
+    end
+
+    def self.require_from_bundler
+      if !ENV["JEKYLL_NO_BUNDLER_REQUIRE"] && File.file?("Gemfile")
+        require "bundler"
+
+        Bundler.setup
+        required_gems = Bundler.require(:jekyll_plugins)
+        message = "Required #{required_gems.map(&:name).join(", ")}"
+        Jekyll.logger.debug("PluginManager:", message)
+        ENV["JEKYLL_NO_BUNDLER_REQUIRE"] = "true"
+
+        true
+      else
+        false
+      end
+    end
+
+    # Check whether a gem plugin is allowed to be used during this build.
+    #
+    # plugin_name - the name of the plugin
+    #
+    # Returns true if the plugin name is in the whitelist or if the site is not
+    #   in safe mode.
+    def plugin_allowed?(plugin_name)
+      !site.safe || whitelist.include?(plugin_name)
+    end
+
+    # Build an array of allowed plugin gem names.
+    #
+    # Returns an array of strings, each string being the name of a gem name
+    #   that is allowed to be used.
+    def whitelist
+      @whitelist ||= Array[site.config["whitelist"]].flatten
+    end
+
+    # Require all .rb files if safe mode is off
+    #
+    # Returns nothing.
+    def require_plugin_files
+      unless site.safe
+        plugins_path.each do |plugin_search_path|
+          plugin_files = Utils.safe_glob(plugin_search_path, File.join("**", "*.rb"))
+          Jekyll::External.require_with_graceful_fail(plugin_files)
+        end
+      end
+    end
+
+    # Public: Setup the plugin search path
+    #
+    # Returns an Array of plugin search paths
+    def plugins_path
+      if site.config["plugins_dir"].eql? Jekyll::Configuration::DEFAULTS["plugins_dir"]
+        [site.in_source_dir(site.config["plugins_dir"])]
+      else
+        Array(site.config["plugins_dir"]).map { |d| File.expand_path(d) }
+      end
+    end
+
+    def deprecation_checks
+      pagination_included = (site.config["plugins"] || []).include?("jekyll-paginate") ||
+        defined?(Jekyll::Paginate)
+      if site.config["paginate"] && !pagination_included
+        Jekyll::Deprecator.deprecation_message "You appear to have pagination " \
+          "turned on, but you haven't included the `jekyll-paginate` gem. " \
+          "Ensure you have `plugins: [jekyll-paginate]` in your configuration file."
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/profiler.rb

@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Profiler
+    TERMINAL_TABLE_STYLES = {
+      :alignment     => :right,
+      :border_top    => false,
+      :border_bottom => false,
+    }.freeze
+    private_constant :TERMINAL_TABLE_STYLES
+
+    def self.tabulate(table_rows)
+      require "terminal-table"
+
+      rows   = table_rows.dup
+      header = rows.shift
+      footer = rows.pop
+      output = +"\n"
+
+      table = Terminal::Table.new do |t|
+        t << header
+        t << :separator
+        rows.each { |row| t << row }
+        t << :separator
+        t << footer
+        t.style = TERMINAL_TABLE_STYLES
+        t.align_column(0, :left)
+      end
+
+      output << table.to_s << "\n"
+    end
+
+    def initialize(site)
+      @site = site
+    end
+
+    def profile_process
+      profile_data = { "PHASE" => "TIME" }
+      total_time = 0
+
+      [:reset, :read, :generate, :render, :cleanup, :write].each do |method|
+        start_time = Time.now
+        @site.send(method)
+        end_time = (Time.now - start_time).round(4)
+        profile_data[method.to_s.upcase] = format("%.4f", end_time)
+        total_time += end_time
+      end
+
+      profile_data["TOTAL TIME"] = format("%.4f", total_time)
+
+      Jekyll.logger.info "\nBuild Process Summary:"
+      Jekyll.logger.info Profiler.tabulate(Array(profile_data))
+
+      Jekyll.logger.info "\nSite Render Stats:"
+      @site.print_stats
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/publisher.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Publisher
+    def initialize(site)
+      @site = site
+    end
+
+    def publish?(thing)
+      can_be_published?(thing) && !hidden_in_the_future?(thing)
+    end
+
+    def hidden_in_the_future?(thing)
+      thing.respond_to?(:date) && !@site.future && thing.date.to_i > @site.time.to_i
+    end
+
+    private
+
+    def can_be_published?(thing)
+      thing.data.fetch("published", true) || @site.unpublished
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/reader.rb

@@ -0,0 +1,192 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Reader
+    attr_reader :site
+
+    def initialize(site)
+      @site = site
+    end
+
+    # Read Site data from disk and load it into internal data structures.
+    #
+    # Returns nothing.
+    def read
+      @site.layouts = LayoutReader.new(site).read
+      read_directories
+      read_included_excludes
+      sort_files!
+      @site.data = DataReader.new(site).read(site.config["data_dir"])
+      CollectionReader.new(site).read
+      ThemeAssetsReader.new(site).read
+    end
+
+    # Sorts posts, pages, and static files.
+    def sort_files!
+      site.collections.each_value { |c| c.docs.sort! }
+      site.pages.sort_by!(&:name)
+      site.static_files.sort_by!(&:relative_path)
+    end
+
+    # Recursively traverse directories to find pages and static files
+    # that will become part of the site according to the rules in
+    # filter_entries.
+    #
+    # dir - The String relative path of the directory to read. Default: ''.
+    #
+    # Returns nothing.
+    def read_directories(dir = "")
+      base = site.in_source_dir(dir)
+
+      return unless File.directory?(base)
+
+      dot_dirs = []
+      dot_pages = []
+      dot_static_files = []
+
+      dot = Dir.chdir(base) { filter_entries(Dir.entries("."), base) }
+      dot.each do |entry|
+        file_path = @site.in_source_dir(base, entry)
+        if File.directory?(file_path)
+          dot_dirs << entry
+        elsif Utils.has_yaml_header?(file_path)
+          dot_pages << entry
+        else
+          dot_static_files << entry
+        end
+      end
+
+      retrieve_posts(dir)
+      retrieve_dirs(base, dir, dot_dirs)
+      retrieve_pages(dir, dot_pages)
+      retrieve_static_files(dir, dot_static_files)
+    end
+
+    # Retrieves all the posts(posts/drafts) from the given directory
+    # and add them to the site and sort them.
+    #
+    # dir - The String representing the directory to retrieve the posts from.
+    #
+    # Returns nothing.
+    def retrieve_posts(dir)
+      return if outside_configured_directory?(dir)
+
+      site.posts.docs.concat(post_reader.read_posts(dir))
+      site.posts.docs.concat(post_reader.read_drafts(dir)) if site.show_drafts
+    end
+
+    # Recursively traverse directories with the read_directories function.
+    #
+    # base - The String representing the site's base directory.
+    # dir - The String representing the directory to traverse down.
+    # dot_dirs - The Array of subdirectories in the dir.
+    #
+    # Returns nothing.
+    def retrieve_dirs(_base, dir, dot_dirs)
+      dot_dirs.each do |file|
+        dir_path = site.in_source_dir(dir, file)
+        rel_path = PathManager.join(dir, file)
+        @site.reader.read_directories(rel_path) unless @site.dest.chomp("/") == dir_path
+      end
+    end
+
+    # Retrieve all the pages from the current directory,
+    # add them to the site and sort them.
+    #
+    # dir - The String representing the directory retrieve the pages from.
+    # dot_pages - The Array of pages in the dir.
+    #
+    # Returns nothing.
+    def retrieve_pages(dir, dot_pages)
+      site.pages.concat(PageReader.new(site, dir).read(dot_pages))
+    end
+
+    # Retrieve all the static files from the current directory,
+    # add them to the site and sort them.
+    #
+    # dir - The directory retrieve the static files from.
+    # dot_static_files - The static files in the dir.
+    #
+    # Returns nothing.
+    def retrieve_static_files(dir, dot_static_files)
+      site.static_files.concat(StaticFileReader.new(site, dir).read(dot_static_files))
+    end
+
+    # Filter out any files/directories that are hidden or backup files (start
+    # with "." or "#" or end with "~"), or contain site content (start with "_"),
+    # or are excluded in the site configuration, unless they are web server
+    # files such as '.htaccess'.
+    #
+    # entries - The Array of String file/directory entries to filter.
+    # base_directory - The string representing the optional base directory.
+    #
+    # Returns the Array of filtered entries.
+    def filter_entries(entries, base_directory = nil)
+      EntryFilter.new(site, base_directory).filter(entries)
+    end
+
+    # Read the entries from a particular directory for processing
+    #
+    # dir - The String representing the relative path of the directory to read.
+    # subfolder - The String representing the directory to read.
+    #
+    # Returns the list of entries to process
+    def get_entries(dir, subfolder)
+      base = site.in_source_dir(dir, subfolder)
+      return [] unless File.exist?(base)
+
+      entries = Dir.chdir(base) { filter_entries(Dir["**/*"], base) }
+      entries.delete_if { |e| File.directory?(site.in_source_dir(base, e)) }
+    end
+
+    private
+
+    # Internal
+    #
+    # Determine if the directory is supposed to contain posts and drafts.
+    # If the user has defined a custom collections_dir, then attempt to read
+    # posts and drafts only from within that directory.
+    #
+    # Returns true if a custom collections_dir has been set but current directory lies
+    # outside that directory.
+    def outside_configured_directory?(dir)
+      collections_dir = site.config["collections_dir"]
+      !collections_dir.empty? && !dir.start_with?("/#{collections_dir}")
+    end
+
+    # Create a single PostReader instance to retrieve drafts and posts from all valid
+    # directories in current site.
+    def post_reader
+      @post_reader ||= PostReader.new(site)
+    end
+
+    def read_included_excludes
+      entry_filter = EntryFilter.new(site)
+
+      site.include.each do |entry|
+        entry_path = site.in_source_dir(entry)
+        next if File.directory?(entry_path)
+        next if entry_filter.symlink?(entry_path)
+
+        read_included_file(entry_path) if File.file?(entry_path)
+      end
+    end
+
+    def read_included_file(entry_path)
+      if Utils.has_yaml_header?(entry_path)
+        conditionally_generate_entry(entry_path, site.pages, PageReader)
+      else
+        conditionally_generate_entry(entry_path, site.static_files, StaticFileReader)
+      end
+    end
+
+    def conditionally_generate_entry(entry_path, container, reader)
+      return if container.find { |item| site.in_source_dir(item.relative_path) == entry_path }
+
+      dir, files = File.split(entry_path)
+      dir.sub!(site.source, "")
+      files = Array(files)
+      container.concat(reader.new(site, dir).read(files))
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/readers/collection_reader.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class CollectionReader
+    SPECIAL_COLLECTIONS = %w(posts data).freeze
+
+    attr_reader :site, :content
+
+    def initialize(site)
+      @site = site
+      @content = {}
+    end
+
+    # Read in all collections specified in the configuration
+    #
+    # Returns nothing.
+    def read
+      site.collections.each_value do |collection|
+        collection.read unless SPECIAL_COLLECTIONS.include?(collection.label)
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/readers/data_reader.rb

@@ -0,0 +1,79 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class DataReader
+    attr_reader :site, :content
+
+    def initialize(site)
+      @site = site
+      @content = {}
+      @entry_filter = EntryFilter.new(site)
+      @source_dir = site.in_source_dir("/")
+    end
+
+    # Read all the files in <dir> and adds them to @content
+    #
+    # dir - The String relative path of the directory to read.
+    #
+    # Returns @content, a Hash of the .yaml, .yml,
+    # .json, and .csv files in the base directory
+    def read(dir)
+      base = site.in_source_dir(dir)
+      read_data_to(base, @content)
+      @content
+    end
+
+    # Read and parse all .yaml, .yml, .json, .csv and .tsv
+    # files under <dir> and add them to the <data> variable.
+    #
+    # dir - The string absolute path of the directory to read.
+    # data - The variable to which data will be added.
+    #
+    # Returns nothing
+    def read_data_to(dir, data)
+      return unless File.directory?(dir) && !@entry_filter.symlink?(dir)
+
+      entries = Dir.chdir(dir) do
+        Dir["*.{yaml,yml,json,csv,tsv}"] + Dir["*"].select { |fn| File.directory?(fn) }
+      end
+
+      entries.each do |entry|
+        path = @site.in_source_dir(dir, entry)
+        next if @entry_filter.symlink?(path)
+
+        if File.directory?(path)
+          read_data_to(path, data[sanitize_filename(entry)] = {})
+        else
+          key = sanitize_filename(File.basename(entry, ".*"))
+          data[key] = read_data_file(path)
+        end
+      end
+    end
+
+    # Determines how to read a data file.
+    #
+    # Returns the contents of the data file.
+    def read_data_file(path)
+      Jekyll.logger.debug "Reading:", path.sub(@source_dir, "")
+
+      case File.extname(path).downcase
+      when ".csv"
+        CSV.read(path,
+                 :headers  => true,
+                 :encoding => site.config["encoding"]).map(&:to_hash)
+      when ".tsv"
+        CSV.read(path,
+                 :col_sep  => "\t",
+                 :headers  => true,
+                 :encoding => site.config["encoding"]).map(&:to_hash)
+      else
+        SafeYAML.load_file(path)
+      end
+    end
+
+    def sanitize_filename(name)
+      name.gsub(%r![^\w\s-]+|(?<=^|\b\s)\s+(?=$|\s?\b)!, "")
+        .gsub(%r!\s+!, "_")
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/readers/layout_reader.rb

@@ -0,0 +1,62 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class LayoutReader
+    attr_reader :site
+
+    def initialize(site)
+      @site = site
+      @layouts = {}
+    end
+
+    def read
+      layout_entries.each do |layout_file|
+        @layouts[layout_name(layout_file)] = \
+          Layout.new(site, layout_directory, layout_file)
+      end
+
+      theme_layout_entries.each do |layout_file|
+        @layouts[layout_name(layout_file)] ||= \
+          Layout.new(site, theme_layout_directory, layout_file)
+      end
+
+      @layouts
+    end
+
+    def layout_directory
+      @layout_directory ||= site.in_source_dir(site.config["layouts_dir"])
+    end
+
+    def theme_layout_directory
+      @theme_layout_directory ||= site.theme.layouts_path if site.theme
+    end
+
+    private
+
+    def layout_entries
+      entries_in layout_directory
+    end
+
+    def theme_layout_entries
+      theme_layout_directory ? entries_in(theme_layout_directory) : []
+    end
+
+    def entries_in(dir)
+      entries = []
+      within(dir) do
+        entries = EntryFilter.new(site).filter(Dir["**/*.*"])
+      end
+      entries
+    end
+
+    def layout_name(file)
+      file.split(".")[0..-2].join(".")
+    end
+
+    def within(directory)
+      return unless File.exist?(directory)
+
+      Dir.chdir(directory) { yield }
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/readers/page_reader.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class PageReader
+    attr_reader :site, :dir, :unfiltered_content
+
+    def initialize(site, dir)
+      @site = site
+      @dir = dir
+      @unfiltered_content = []
+    end
+
+    # Create a new `Jekyll::Page` object for each entry in a given array.
+    #
+    # files - An array of file names inside `@dir`
+    #
+    # Returns an array of publishable `Jekyll::Page` objects.
+    def read(files)
+      files.each do |page|
+        @unfiltered_content << Page.new(@site, @site.source, @dir, page)
+      end
+      @unfiltered_content.select { |page| site.publisher.publish?(page) }
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/readers/post_reader.rb

@@ -0,0 +1,85 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class PostReader
+    attr_reader :site, :unfiltered_content
+
+    def initialize(site)
+      @site = site
+    end
+
+    # Read all the files in <source>/<dir>/_drafts and create a new
+    # Document object with each one.
+    #
+    # dir - The String relative path of the directory to read.
+    #
+    # Returns nothing.
+    def read_drafts(dir)
+      read_publishable(dir, "_drafts", Document::DATELESS_FILENAME_MATCHER)
+    end
+
+    # Read all the files in <source>/<dir>/_posts and create a new Document
+    # object with each one.
+    #
+    # dir - The String relative path of the directory to read.
+    #
+    # Returns nothing.
+    def read_posts(dir)
+      read_publishable(dir, "_posts", Document::DATE_FILENAME_MATCHER)
+    end
+
+    # Read all the files in <source>/<dir>/<magic_dir> and create a new
+    # Document object with each one insofar as it matches the regexp matcher.
+    #
+    # dir - The String relative path of the directory to read.
+    #
+    # Returns nothing.
+    def read_publishable(dir, magic_dir, matcher)
+      read_content(dir, magic_dir, matcher)
+        .tap { |docs| docs.each(&:read) }
+        .select { |doc| processable?(doc) }
+    end
+
+    # Read all the content files from <source>/<dir>/magic_dir
+    #   and return them with the type klass.
+    #
+    # dir - The String relative path of the directory to read.
+    # magic_dir - The String relative directory to <dir>,
+    #   looks for content here.
+    # klass - The return type of the content.
+    #
+    # Returns klass type of content files
+    def read_content(dir, magic_dir, matcher)
+      @site.reader.get_entries(dir, magic_dir).map do |entry|
+        next unless matcher.match?(entry)
+
+        path = @site.in_source_dir(File.join(dir, magic_dir, entry))
+        Document.new(path,
+                     :site       => @site,
+                     :collection => @site.posts)
+      end.tap(&:compact!)
+    end
+
+    private
+
+    def processable?(doc)
+      if doc.content.nil?
+        Jekyll.logger.debug "Skipping:", "Content in #{doc.relative_path} is nil"
+        false
+      elsif !doc.content.valid_encoding?
+        Jekyll.logger.debug "Skipping:", "#{doc.relative_path} is not valid UTF-8"
+        false
+      else
+        publishable?(doc)
+      end
+    end
+
+    def publishable?(doc)
+      site.publisher.publish?(doc).tap do |will_publish|
+        if !will_publish && site.publisher.hidden_in_the_future?(doc)
+          Jekyll.logger.warn "Skipping:", "#{doc.relative_path} has a future date"
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/readers/static_file_reader.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class StaticFileReader
+    attr_reader :site, :dir, :unfiltered_content
+
+    def initialize(site, dir)
+      @site = site
+      @dir = dir
+      @unfiltered_content = []
+    end
+
+    # Create a new StaticFile object for every entry in a given list of basenames.
+    #
+    # files - an array of file basenames.
+    #
+    # Returns an array of static files.
+    def read(files)
+      files.each do |file|
+        @unfiltered_content << StaticFile.new(@site, @site.source, @dir, file)
+      end
+      @unfiltered_content
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/readers/theme_assets_reader.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class ThemeAssetsReader
+    attr_reader :site
+
+    def initialize(site)
+      @site = site
+    end
+
+    def read
+      return unless site.theme&.assets_path
+
+      Find.find(site.theme.assets_path) do |path|
+        next if File.directory?(path)
+
+        if File.symlink?(path)
+          Jekyll.logger.warn "Theme reader:", "Ignored symlinked asset: #{path}"
+        else
+          read_theme_asset(path)
+        end
+      end
+    end
+
+    private
+
+    def read_theme_asset(path)
+      base = site.theme.root
+      dir = File.dirname(path.sub("#{site.theme.root}/", ""))
+      name = File.basename(path)
+
+      if Utils.has_yaml_header?(path)
+        append_unless_exists site.pages,
+                             Jekyll::Page.new(site, base, dir, name)
+      else
+        append_unless_exists site.static_files,
+                             Jekyll::StaticFile.new(site, base, "/#{dir}", name)
+      end
+    end
+
+    def append_unless_exists(haystack, new_item)
+      if haystack.any? { |file| file.relative_path == new_item.relative_path }
+        Jekyll.logger.debug "Theme:",
+                            "Ignoring #{new_item.relative_path} in theme due to existing file " \
+                            "with that path in site."
+        return
+      end
+
+      haystack << new_item
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/regenerator.rb

@@ -0,0 +1,195 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Regenerator
+    attr_reader :site, :metadata, :cache
+    attr_accessor :disabled
+    private :disabled, :disabled=
+
+    def initialize(site)
+      @site = site
+
+      # Read metadata from file
+      read_metadata
+
+      # Initialize cache to an empty hash
+      clear_cache
+    end
+
+    # Checks if a renderable object needs to be regenerated
+    #
+    # Returns a boolean.
+    def regenerate?(document)
+      return true if disabled
+
+      case document
+      when Page
+        regenerate_page?(document)
+      when Document
+        regenerate_document?(document)
+      else
+        source_path = document.respond_to?(:path) ? document.path : nil
+        dest_path = document.destination(@site.dest) if document.respond_to?(:destination)
+        source_modified_or_dest_missing?(source_path, dest_path)
+      end
+    end
+
+    # Add a path to the metadata
+    #
+    # Returns true, also on failure.
+    def add(path)
+      return true unless File.exist?(path)
+
+      metadata[path] = {
+        "mtime" => File.mtime(path),
+        "deps"  => [],
+      }
+      cache[path] = true
+    end
+
+    # Force a path to regenerate
+    #
+    # Returns true.
+    def force(path)
+      cache[path] = true
+    end
+
+    # Clear the metadata and cache
+    #
+    # Returns nothing
+    def clear
+      @metadata = {}
+      clear_cache
+    end
+
+    # Clear just the cache
+    #
+    # Returns nothing
+    def clear_cache
+      @cache = {}
+    end
+
+    # Checks if the source has been modified or the
+    # destination is missing
+    #
+    # returns a boolean
+    def source_modified_or_dest_missing?(source_path, dest_path)
+      modified?(source_path) || (dest_path && !File.exist?(dest_path))
+    end
+
+    # Checks if a path's (or one of its dependencies)
+    # mtime has changed
+    #
+    # Returns a boolean.
+    def modified?(path)
+      return true if disabled?
+
+      # objects that don't have a path are always regenerated
+      return true if path.nil?
+
+      # Check for path in cache
+      return cache[path] if cache.key? path
+
+      if metadata[path]
+        # If we have seen this file before,
+        # check if it or one of its dependencies has been modified
+        existing_file_modified?(path)
+      else
+        # If we have not seen this file before, add it to the metadata and regenerate it
+        add(path)
+      end
+    end
+
+    # Add a dependency of a path
+    #
+    # Returns nothing.
+    def add_dependency(path, dependency)
+      return if metadata[path].nil? || disabled
+
+      unless metadata[path]["deps"].include? dependency
+        metadata[path]["deps"] << dependency
+        add(dependency) unless metadata.include?(dependency)
+      end
+      regenerate? dependency
+    end
+
+    # Write the metadata to disk
+    #
+    # Returns nothing.
+    def write_metadata
+      unless disabled?
+        Jekyll.logger.debug "Writing Metadata:", ".jekyll-metadata"
+        File.binwrite(metadata_file, Marshal.dump(metadata))
+      end
+    end
+
+    # Produce the absolute path of the metadata file
+    #
+    # Returns the String path of the file.
+    def metadata_file
+      @metadata_file ||= site.in_source_dir(".jekyll-metadata")
+    end
+
+    # Check if metadata has been disabled
+    #
+    # Returns a Boolean (true for disabled, false for enabled).
+    def disabled?
+      self.disabled = !site.incremental? if disabled.nil?
+      disabled
+    end
+
+    private
+
+    # Read metadata from the metadata file, if no file is found,
+    # initialize with an empty hash
+    #
+    # Returns the read metadata.
+    def read_metadata
+      @metadata =
+        if !disabled? && File.file?(metadata_file)
+          content = File.binread(metadata_file)
+
+          begin
+            Marshal.load(content)
+          rescue TypeError
+            SafeYAML.load(content)
+          rescue ArgumentError => e
+            Jekyll.logger.warn("Failed to load #{metadata_file}: #{e}")
+            {}
+          end
+        else
+          {}
+        end
+    end
+
+    def regenerate_page?(document)
+      document.asset_file? || document.data["regenerate"] ||
+        source_modified_or_dest_missing?(
+          site.in_source_dir(document.relative_path), document.destination(@site.dest)
+        )
+    end
+
+    def regenerate_document?(document)
+      !document.write? || document.data["regenerate"] ||
+        source_modified_or_dest_missing?(
+          document.path, document.destination(@site.dest)
+        )
+    end
+
+    def existing_file_modified?(path)
+      # If one of this file dependencies have been modified,
+      # set the regeneration bit for both the dependency and the file to true
+      metadata[path]["deps"].each do |dependency|
+        return cache[dependency] = cache[path] = true if modified?(dependency)
+      end
+
+      if File.exist?(path) && metadata[path]["mtime"].eql?(File.mtime(path))
+        # If this file has not been modified, set the regeneration bit to false
+        cache[path] = false
+      else
+        # If it has been modified, set it to true
+        add(path)
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/related_posts.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class RelatedPosts
+    class << self
+      attr_accessor :lsi
+    end
+
+    attr_reader :post, :site
+
+    def initialize(post)
+      @post = post
+      @site = post.site
+      Jekyll::External.require_with_graceful_fail("classifier-reborn") if site.lsi
+    end
+
+    def build
+      return [] unless site.posts.docs.size > 1
+
+      if site.lsi
+        build_index
+        lsi_related_posts
+      else
+        most_recent_posts
+      end
+    end
+
+    def build_index
+      self.class.lsi ||= begin
+        lsi = ClassifierReborn::LSI.new(:auto_rebuild => false)
+        Jekyll.logger.info("Populating LSI...")
+
+        site.posts.docs.each do |x|
+          lsi.add_item(x)
+        end
+
+        Jekyll.logger.info("Rebuilding index...")
+        lsi.build_index
+        Jekyll.logger.info("")
+        lsi
+      end
+    end
+
+    def lsi_related_posts
+      self.class.lsi.find_related(post, 11)
+    end
+
+    def most_recent_posts
+      @most_recent_posts ||= (site.posts.docs.last(11).reverse! - [post]).first(10)
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/renderer.rb

@@ -0,0 +1,265 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Renderer
+    attr_reader :document, :site
+    attr_writer :layouts, :payload
+
+    def initialize(site, document, site_payload = nil)
+      @site     = site
+      @document = document
+      @payload  = site_payload
+      @layouts  = nil
+    end
+
+    # Fetches the payload used in Liquid rendering.
+    # It can be written with #payload=(new_payload)
+    # Falls back to site.site_payload if no payload is set.
+    #
+    # Returns a Jekyll::Drops::UnifiedPayloadDrop
+    def payload
+      @payload ||= site.site_payload
+    end
+
+    # The list of layouts registered for this Renderer.
+    # It can be written with #layouts=(new_layouts)
+    # Falls back to site.layouts if no layouts are registered.
+    #
+    # Returns a Hash of String => Jekyll::Layout identified
+    # as basename without the extension name.
+    def layouts
+      @layouts || site.layouts
+    end
+
+    # Determine which converters to use based on this document's
+    # extension.
+    #
+    # Returns Array of Converter instances.
+    def converters
+      @converters ||= site.converters.select { |c| c.matches(document.extname) }.tap(&:sort!)
+    end
+
+    # Determine the extname the outputted file should have
+    #
+    # Returns String the output extname including the leading period.
+    def output_ext
+      @output_ext ||= (permalink_ext || converter_output_ext)
+    end
+
+    # Prepare payload and render the document
+    #
+    # Returns String rendered document output
+    def run
+      Jekyll.logger.debug "Rendering:", document.relative_path
+
+      assign_pages!
+      assign_current_document!
+      assign_highlighter_options!
+      assign_layout_data!
+
+      Jekyll.logger.debug "Pre-Render Hooks:", document.relative_path
+      document.trigger_hooks(:pre_render, payload)
+
+      render_document
+    end
+
+    # Render the document.
+    #
+    # Returns String rendered document output
+    # rubocop: disable Metrics/AbcSize, Metrics/MethodLength
+    def render_document
+      info = {
+        :registers        => { :site => site, :page => payload["page"] },
+        :strict_filters   => liquid_options["strict_filters"],
+        :strict_variables => liquid_options["strict_variables"],
+      }
+
+      output = document.content
+      if document.render_with_liquid?
+        Jekyll.logger.debug "Rendering Liquid:", document.relative_path
+        output = render_liquid(output, payload, info, document.path)
+      end
+
+      Jekyll.logger.debug "Rendering Markup:", document.relative_path
+      output = convert(output.to_s)
+      document.content = output
+
+      Jekyll.logger.debug "Post-Convert Hooks:", document.relative_path
+      document.trigger_hooks(:post_convert)
+      output = document.content
+
+      if document.place_in_layout?
+        Jekyll.logger.debug "Rendering Layout:", document.relative_path
+        output = place_in_layouts(output, payload, info)
+      end
+
+      output
+    end
+    # rubocop: enable Metrics/AbcSize, Metrics/MethodLength
+
+    # Convert the document using the converters which match this renderer's document.
+    #
+    # Returns String the converted content.
+    def convert(content)
+      converters.reduce(content) do |output, converter|
+        begin
+          converter.convert output
+        rescue StandardError => e
+          Jekyll.logger.error "Conversion error:",
+                              "#{converter.class} encountered an error while "\
+                              "converting '#{document.relative_path}':"
+          Jekyll.logger.error("", e.to_s)
+          raise e
+        end
+      end
+    end
+
+    # Render the given content with the payload and info
+    #
+    # content -
+    # payload -
+    # info    -
+    # path    - (optional) the path to the file, for use in ex
+    #
+    # Returns String the content, rendered by Liquid.
+    def render_liquid(content, payload, info, path = nil)
+      template = site.liquid_renderer.file(path).parse(content)
+      template.warnings.each do |e|
+        Jekyll.logger.warn "Liquid Warning:",
+                           LiquidRenderer.format_error(e, path || document.relative_path)
+      end
+      template.render!(payload, info)
+    # rubocop: disable Lint/RescueException
+    rescue Exception => e
+      Jekyll.logger.error "Liquid Exception:",
+                          LiquidRenderer.format_error(e, path || document.relative_path)
+      raise e
+    end
+    # rubocop: enable Lint/RescueException
+
+    # Checks if the layout specified in the document actually exists
+    #
+    # layout - the layout to check
+    #
+    # Returns Boolean true if the layout is invalid, false if otherwise
+    def invalid_layout?(layout)
+      !document.data["layout"].nil? && layout.nil? && !(document.is_a? Jekyll::Excerpt)
+    end
+
+    # Render layouts and place document content inside.
+    #
+    # Returns String rendered content
+    def place_in_layouts(content, payload, info)
+      output = content.dup
+      layout = layouts[document.data["layout"].to_s]
+      validate_layout(layout)
+
+      used = Set.new([layout])
+
+      # Reset the payload layout data to ensure it starts fresh for each page.
+      payload["layout"] = nil
+
+      while layout
+        output = render_layout(output, layout, info)
+        add_regenerator_dependencies(layout)
+
+        next unless (layout = site.layouts[layout.data["layout"]])
+        break if used.include?(layout)
+
+        used << layout
+      end
+      output
+    end
+
+    private
+
+    # Checks if the layout specified in the document actually exists
+    #
+    # layout - the layout to check
+    # Returns nothing
+    def validate_layout(layout)
+      return unless invalid_layout?(layout)
+
+      Jekyll.logger.warn "Build Warning:", "Layout '#{document.data["layout"]}' requested " \
+        "in #{document.relative_path} does not exist."
+    end
+
+    # Render layout content into document.output
+    #
+    # Returns String rendered content
+    def render_layout(output, layout, info)
+      payload["content"] = output
+      payload["layout"]  = Utils.deep_merge_hashes(layout.data, payload["layout"] || {})
+
+      render_liquid(
+        layout.content,
+        payload,
+        info,
+        layout.path
+      )
+    end
+
+    def add_regenerator_dependencies(layout)
+      return unless document.write?
+
+      site.regenerator.add_dependency(
+        site.in_source_dir(document.path),
+        layout.path
+      )
+    end
+
+    # Set page content to payload and assign pager if document has one.
+    #
+    # Returns nothing
+    def assign_pages!
+      payload["page"] = document.to_liquid
+      payload["paginator"] = (document.pager.to_liquid if document.respond_to?(:pager))
+    end
+
+    # Set related posts to payload if document is a post.
+    #
+    # Returns nothing
+    def assign_current_document!
+      payload["site"].current_document = document
+    end
+
+    # Set highlighter prefix and suffix
+    #
+    # Returns nothing
+    def assign_highlighter_options!
+      payload["highlighter_prefix"] = converters.first.highlighter_prefix
+      payload["highlighter_suffix"] = converters.first.highlighter_suffix
+    end
+
+    def assign_layout_data!
+      layout = layouts[document.data["layout"]]
+      payload["layout"] = Utils.deep_merge_hashes(layout.data, payload["layout"] || {}) if layout
+    end
+
+    def permalink_ext
+      document_permalink = document.permalink
+      if document_permalink && !document_permalink.end_with?("/")
+        permalink_ext = File.extname(document_permalink)
+        permalink_ext unless permalink_ext.empty?
+      end
+    end
+
+    def converter_output_ext
+      if output_exts.size == 1
+        output_exts.last
+      else
+        output_exts[-2]
+      end
+    end
+
+    def output_exts
+      @output_exts ||= converters.map do |c|
+        c.output_ext(document.extname)
+      end.tap(&:compact!)
+    end
+
+    def liquid_options
+      @liquid_options ||= site.config["liquid"]
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/site.rb

@@ -0,0 +1,551 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Site
+    attr_reader   :source, :dest, :cache_dir, :config
+    attr_accessor :layouts, :pages, :static_files, :drafts, :inclusions,
+                  :exclude, :include, :lsi, :highlighter, :permalink_style,
+                  :time, :future, :unpublished, :safe, :plugins, :limit_posts,
+                  :show_drafts, :keep_files, :baseurl, :data, :file_read_opts,
+                  :gems, :plugin_manager, :theme
+
+    attr_accessor :converters, :generators, :reader
+    attr_reader   :regenerator, :liquid_renderer, :includes_load_paths, :filter_cache, :profiler
+
+    # Public: Initialize a new Site.
+    #
+    # config - A Hash containing site configuration details.
+    def initialize(config)
+      # Source and destination may not be changed after the site has been created.
+      @source          = File.expand_path(config["source"]).freeze
+      @dest            = File.expand_path(config["destination"]).freeze
+
+      self.config = config
+
+      @cache_dir       = in_source_dir(config["cache_dir"])
+      @filter_cache    = {}
+
+      @reader          = Reader.new(self)
+      @profiler        = Profiler.new(self)
+      @regenerator     = Regenerator.new(self)
+      @liquid_renderer = LiquidRenderer.new(self)
+
+      Jekyll.sites << self
+
+      reset
+      setup
+
+      Jekyll::Hooks.trigger :site, :after_init, self
+    end
+
+    # Public: Set the site's configuration. This handles side-effects caused by
+    # changing values in the configuration.
+    #
+    # config - a Jekyll::Configuration, containing the new configuration.
+    #
+    # Returns the new configuration.
+    def config=(config)
+      @config = config.clone
+
+      %w(safe lsi highlighter baseurl exclude include future unpublished
+         show_drafts limit_posts keep_files).each do |opt|
+        send("#{opt}=", config[opt])
+      end
+
+      # keep using `gems` to avoid breaking change
+      self.gems = config["plugins"]
+
+      configure_cache
+      configure_plugins
+      configure_theme
+      configure_include_paths
+      configure_file_read_opts
+
+      self.permalink_style = config["permalink"].to_sym
+
+      # Read in a _config.yml from the current theme-gem at the very end.
+      @config = load_theme_configuration(config) if theme
+      @config
+    end
+
+    # Public: Read, process, and write this Site to output.
+    #
+    # Returns nothing.
+    def process
+      return profiler.profile_process if config["profile"]
+
+      reset
+      read
+      generate
+      render
+      cleanup
+      write
+    end
+
+    def print_stats
+      Jekyll.logger.info @liquid_renderer.stats_table
+    end
+
+    # rubocop:disable Metrics/AbcSize
+    # rubocop:disable Metrics/MethodLength
+    #
+    # Reset Site details.
+    #
+    # Returns nothing
+    def reset
+      self.time = if config["time"]
+                    Utils.parse_date(config["time"].to_s, "Invalid time in _config.yml.")
+                  else
+                    Time.now
+                  end
+      self.layouts = {}
+      self.inclusions = {}
+      self.pages = []
+      self.static_files = []
+      self.data = {}
+      @post_attr_hash = {}
+      @site_data = nil
+      @collections = nil
+      @documents = nil
+      @docs_to_write = nil
+      @regenerator.clear_cache
+      @liquid_renderer.reset
+      @site_cleaner = nil
+      frontmatter_defaults.reset
+
+      raise ArgumentError, "limit_posts must be a non-negative number" if limit_posts.negative?
+
+      Jekyll::Cache.clear_if_config_changed config
+      Jekyll::Hooks.trigger :site, :after_reset, self
+      nil
+    end
+    # rubocop:enable Metrics/MethodLength
+    # rubocop:enable Metrics/AbcSize
+
+    # Load necessary libraries, plugins, converters, and generators.
+    #
+    # Returns nothing.
+    def setup
+      ensure_not_in_dest
+
+      plugin_manager.conscientious_require
+
+      self.converters = instantiate_subclasses(Jekyll::Converter)
+      self.generators = instantiate_subclasses(Jekyll::Generator)
+    end
+
+    # Check that the destination dir isn't the source dir or a directory
+    # parent to the source dir.
+    def ensure_not_in_dest
+      dest_pathname = Pathname.new(dest)
+      Pathname.new(source).ascend do |path|
+        if path == dest_pathname
+          raise Errors::FatalException,
+                "Destination directory cannot be or contain the Source directory."
+        end
+      end
+    end
+
+    # The list of collections and their corresponding Jekyll::Collection instances.
+    # If config['collections'] is set, a new instance is created
+    # for each item in the collection, a new hash is returned otherwise.
+    #
+    # Returns a Hash containing collection name-to-instance pairs.
+    def collections
+      @collections ||= collection_names.each_with_object({}) do |name, hsh|
+        hsh[name] = Jekyll::Collection.new(self, name)
+      end
+    end
+
+    # The list of collection names.
+    #
+    # Returns an array of collection names from the configuration,
+    #   or an empty array if the `collections` key is not set.
+    def collection_names
+      case config["collections"]
+      when Hash
+        config["collections"].keys
+      when Array
+        config["collections"]
+      when nil
+        []
+      else
+        raise ArgumentError, "Your `collections` key must be a hash or an array."
+      end
+    end
+
+    # Read Site data from disk and load it into internal data structures.
+    #
+    # Returns nothing.
+    def read
+      reader.read
+      limit_posts!
+      Jekyll::Hooks.trigger :site, :post_read, self
+      nil
+    end
+
+    # Run each of the Generators.
+    #
+    # Returns nothing.
+    def generate
+      generators.each do |generator|
+        start = Time.now
+        generator.generate(self)
+        Jekyll.logger.debug "Generating:",
+                            "#{generator.class} finished in #{Time.now - start} seconds."
+      end
+      nil
+    end
+
+    # Render the site to the destination.
+    #
+    # Returns nothing.
+    def render
+      relative_permalinks_are_deprecated
+
+      payload = site_payload
+
+      Jekyll::Hooks.trigger :site, :pre_render, self, payload
+
+      render_docs(payload)
+      render_pages(payload)
+
+      Jekyll::Hooks.trigger :site, :post_render, self, payload
+      nil
+    end
+
+    # Remove orphaned files and empty directories in destination.
+    #
+    # Returns nothing.
+    def cleanup
+      site_cleaner.cleanup!
+      nil
+    end
+
+    # Write static files, pages, and posts.
+    #
+    # Returns nothing.
+    def write
+      Jekyll::Commands::Doctor.conflicting_urls(self)
+      each_site_file do |item|
+        item.write(dest) if regenerator.regenerate?(item)
+      end
+      regenerator.write_metadata
+      Jekyll::Hooks.trigger :site, :post_write, self
+      nil
+    end
+
+    def posts
+      collections["posts"] ||= Collection.new(self, "posts")
+    end
+
+    # Construct a Hash of Posts indexed by the specified Post attribute.
+    #
+    # post_attr - The String name of the Post attribute.
+    #
+    # Examples
+    #
+    #   post_attr_hash('categories')
+    #   # => { 'tech' => [<Post A>, <Post B>],
+    #   #      'ruby' => [<Post B>] }
+    #
+    # Returns the Hash: { attr => posts } where
+    #   attr  - One of the values for the requested attribute.
+    #   posts - The Array of Posts with the given attr value.
+    def post_attr_hash(post_attr)
+      # Build a hash map based on the specified post attribute ( post attr =>
+      # array of posts ) then sort each array in reverse order.
+      @post_attr_hash[post_attr] ||= begin
+        hash = Hash.new { |h, key| h[key] = [] }
+        posts.docs.each do |p|
+          p.data[post_attr]&.each { |t| hash[t] << p }
+        end
+        hash.each_value { |posts| posts.sort!.reverse! }
+        hash
+      end
+    end
+
+    def tags
+      post_attr_hash("tags")
+    end
+
+    def categories
+      post_attr_hash("categories")
+    end
+
+    # Prepare site data for site payload. The method maintains backward compatibility
+    # if the key 'data' is already used in _config.yml.
+    #
+    # Returns the Hash to be hooked to site.data.
+    def site_data
+      @site_data ||= (config["data"] || data)
+    end
+
+    # The Hash payload containing site-wide data.
+    #
+    # Returns the Hash: { "site" => data } where data is a Hash with keys:
+    #   "time"       - The Time as specified in the configuration or the
+    #                  current time if none was specified.
+    #   "posts"      - The Array of Posts, sorted chronologically by post date
+    #                  and then title.
+    #   "pages"      - The Array of all Pages.
+    #   "html_pages" - The Array of HTML Pages.
+    #   "categories" - The Hash of category values and Posts.
+    #                  See Site#post_attr_hash for type info.
+    #   "tags"       - The Hash of tag values and Posts.
+    #                  See Site#post_attr_hash for type info.
+    def site_payload
+      Drops::UnifiedPayloadDrop.new self
+    end
+    alias_method :to_liquid, :site_payload
+
+    # Get the implementation class for the given Converter.
+    # Returns the Converter instance implementing the given Converter.
+    # klass - The Class of the Converter to fetch.
+    def find_converter_instance(klass)
+      @find_converter_instance ||= {}
+      @find_converter_instance[klass] ||= begin
+        converters.find { |converter| converter.instance_of?(klass) } || \
+          raise("No Converters found for #{klass}")
+      end
+    end
+
+    # klass - class or module containing the subclasses.
+    # Returns array of instances of subclasses of parameter.
+    # Create array of instances of the subclasses of the class or module
+    # passed in as argument.
+
+    def instantiate_subclasses(klass)
+      klass.descendants.select { |c| !safe || c.safe }.tap do |result|
+        result.sort!
+        result.map! { |c| c.new(config) }
+      end
+    end
+
+    # Warns the user if permanent links are relative to the parent
+    # directory. As this is a deprecated function of Jekyll.
+    #
+    # Returns
+    def relative_permalinks_are_deprecated
+      if config["relative_permalinks"]
+        Jekyll.logger.abort_with "Since v3.0, permalinks for pages" \
+                                 " in subfolders must be relative to the" \
+                                 " site source directory, not the parent" \
+                                 " directory. Check https://jekyllrb.com/docs/upgrading/"\
+                                 " for more info."
+      end
+    end
+
+    # Get the to be written documents
+    #
+    # Returns an Array of Documents which should be written
+    def docs_to_write
+      documents.select(&:write?)
+    end
+
+    # Get all the documents
+    #
+    # Returns an Array of all Documents
+    def documents
+      collections.each_with_object(Set.new) do |(_, collection), set|
+        set.merge(collection.docs).merge(collection.files)
+      end.to_a
+    end
+
+    def each_site_file
+      %w(pages static_files docs_to_write).each do |type|
+        send(type).each do |item|
+          yield item
+        end
+      end
+    end
+
+    # Returns the FrontmatterDefaults or creates a new FrontmatterDefaults
+    # if it doesn't already exist.
+    #
+    # Returns The FrontmatterDefaults
+    def frontmatter_defaults
+      @frontmatter_defaults ||= FrontmatterDefaults.new(self)
+    end
+
+    # Whether to perform a full rebuild without incremental regeneration
+    #
+    # Returns a Boolean: true for a full rebuild, false for normal build
+    def incremental?(override = {})
+      override["incremental"] || config["incremental"]
+    end
+
+    # Returns the publisher or creates a new publisher if it doesn't
+    # already exist.
+    #
+    # Returns The Publisher
+    def publisher
+      @publisher ||= Publisher.new(self)
+    end
+
+    # Public: Prefix a given path with the source directory.
+    #
+    # paths - (optional) path elements to a file or directory within the
+    #         source directory
+    #
+    # Returns a path which is prefixed with the source directory.
+    def in_source_dir(*paths)
+      paths.reduce(source) do |base, path|
+        Jekyll.sanitized_path(base, path)
+      end
+    end
+
+    # Public: Prefix a given path with the theme directory.
+    #
+    # paths - (optional) path elements to a file or directory within the
+    #         theme directory
+    #
+    # Returns a path which is prefixed with the theme root directory.
+    def in_theme_dir(*paths)
+      return nil unless theme
+
+      paths.reduce(theme.root) do |base, path|
+        Jekyll.sanitized_path(base, path)
+      end
+    end
+
+    # Public: Prefix a given path with the destination directory.
+    #
+    # paths - (optional) path elements to a file or directory within the
+    #         destination directory
+    #
+    # Returns a path which is prefixed with the destination directory.
+    def in_dest_dir(*paths)
+      paths.reduce(dest) do |base, path|
+        Jekyll.sanitized_path(base, path)
+      end
+    end
+
+    # Public: Prefix a given path with the cache directory.
+    #
+    # paths - (optional) path elements to a file or directory within the
+    #         cache directory
+    #
+    # Returns a path which is prefixed with the cache directory.
+    def in_cache_dir(*paths)
+      paths.reduce(cache_dir) do |base, path|
+        Jekyll.sanitized_path(base, path)
+      end
+    end
+
+    # Public: The full path to the directory that houses all the collections registered
+    # with the current site.
+    #
+    # Returns the source directory or the absolute path to the custom collections_dir
+    def collections_path
+      dir_str = config["collections_dir"]
+      @collections_path ||= dir_str.empty? ? source : in_source_dir(dir_str)
+    end
+
+    # Public
+    #
+    # Returns the object as a debug String.
+    def inspect
+      "#<#{self.class} @source=#{@source}>"
+    end
+
+    private
+
+    def load_theme_configuration(config)
+      return config if config["ignore_theme_config"] == true
+
+      theme_config_file = in_theme_dir("_config.yml")
+      return config unless File.exist?(theme_config_file)
+
+      # Bail out if the theme_config_file is a symlink file irrespective of safe mode
+      return config if File.symlink?(theme_config_file)
+
+      theme_config = SafeYAML.load_file(theme_config_file)
+      return config unless theme_config.is_a?(Hash)
+
+      Jekyll.logger.info "Theme Config file:", theme_config_file
+
+      # theme_config should not be overriding Jekyll's defaults
+      theme_config.delete_if { |key, _| Configuration::DEFAULTS.key?(key) }
+
+      # Override theme_config with existing config and return the result.
+      Utils.deep_merge_hashes(theme_config, config)
+    end
+
+    # Limits the current posts; removes the posts which exceed the limit_posts
+    #
+    # Returns nothing
+    def limit_posts!
+      if limit_posts.positive?
+        limit = posts.docs.length < limit_posts ? posts.docs.length : limit_posts
+        posts.docs = posts.docs[-limit, limit]
+      end
+    end
+
+    # Returns the Cleaner or creates a new Cleaner if it doesn't
+    # already exist.
+    #
+    # Returns The Cleaner
+    def site_cleaner
+      @site_cleaner ||= Cleaner.new(self)
+    end
+
+    # Disable Marshaling cache to disk in Safe Mode
+    def configure_cache
+      Jekyll::Cache.cache_dir = in_source_dir(config["cache_dir"], "Jekyll/Cache")
+      Jekyll::Cache.disable_disk_cache! if safe || config["disable_disk_cache"]
+    end
+
+    def configure_plugins
+      self.plugin_manager = Jekyll::PluginManager.new(self)
+      self.plugins        = plugin_manager.plugins_path
+    end
+
+    def configure_theme
+      self.theme = nil
+      return if config["theme"].nil?
+
+      self.theme =
+        if config["theme"].is_a?(String)
+          Jekyll::Theme.new(config["theme"])
+        else
+          Jekyll.logger.warn "Theme:", "value of 'theme' in config should be " \
+          "String to use gem-based themes, but got #{config["theme"].class}"
+          nil
+        end
+    end
+
+    def configure_include_paths
+      @includes_load_paths = Array(in_source_dir(config["includes_dir"].to_s))
+      @includes_load_paths << theme.includes_path if theme&.includes_path
+    end
+
+    def configure_file_read_opts
+      self.file_read_opts = {}
+      file_read_opts[:encoding] = config["encoding"] if config["encoding"]
+      self.file_read_opts = Jekyll::Utils.merged_file_read_opts(self, {})
+    end
+
+    def render_docs(payload)
+      collections.each_value do |collection|
+        collection.docs.each do |document|
+          render_regenerated(document, payload)
+        end
+      end
+    end
+
+    def render_pages(payload)
+      pages.each do |page|
+        render_regenerated(page, payload)
+      end
+    end
+
+    def render_regenerated(document, payload)
+      return unless regenerator.regenerate?(document)
+
+      document.renderer.payload = payload
+      document.output = document.renderer.run
+      document.trigger_hooks(:post_render)
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/static_file.rb

@@ -0,0 +1,208 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class StaticFile
+    extend Forwardable
+
+    attr_reader :relative_path, :extname, :name
+
+    def_delegator :to_liquid, :to_json, :to_json
+
+    class << self
+      # The cache of last modification times [path] -> mtime.
+      def mtimes
+        @mtimes ||= {}
+      end
+
+      def reset_cache
+        @mtimes = nil
+      end
+    end
+
+    # Initialize a new StaticFile.
+    #
+    # site - The Site.
+    # base - The String path to the <source>.
+    # dir  - The String path between <source> and the file.
+    # name - The String filename of the file.
+    # rubocop: disable Metrics/ParameterLists
+    def initialize(site, base, dir, name, collection = nil)
+      @site = site
+      @base = base
+      @dir  = dir
+      @name = name
+      @collection = collection
+      @relative_path = File.join(*[@dir, @name].compact)
+      @extname = File.extname(@name)
+    end
+    # rubocop: enable Metrics/ParameterLists
+
+    # Returns source file path.
+    def path
+      @path ||= begin
+        # Static file is from a collection inside custom collections directory
+        if !@collection.nil? && !@site.config["collections_dir"].empty?
+          File.join(*[@base, @site.config["collections_dir"], @dir, @name].compact)
+        else
+          File.join(*[@base, @dir, @name].compact)
+        end
+      end
+    end
+
+    # Obtain destination path.
+    #
+    # dest - The String path to the destination dir.
+    #
+    # Returns destination file path.
+    def destination(dest)
+      @destination ||= {}
+      @destination[dest] ||= @site.in_dest_dir(dest, Jekyll::URL.unescape_path(url))
+    end
+
+    def destination_rel_dir
+      if @collection
+        File.dirname(url)
+      else
+        @dir
+      end
+    end
+
+    def modified_time
+      @modified_time ||= File.stat(path).mtime
+    end
+
+    # Returns last modification time for this file.
+    def mtime
+      modified_time.to_i
+    end
+
+    # Is source path modified?
+    #
+    # Returns true if modified since last write.
+    def modified?
+      self.class.mtimes[path] != mtime
+    end
+
+    # Whether to write the file to the filesystem
+    #
+    # Returns true unless the defaults for the destination path from
+    # _config.yml contain `published: false`.
+    def write?
+      publishable = defaults.fetch("published", true)
+      return publishable unless @collection
+
+      publishable && @collection.write?
+    end
+
+    # Write the static file to the destination directory (if modified).
+    #
+    # dest - The String path to the destination dir.
+    #
+    # Returns false if the file was not modified since last time (no-op).
+    def write(dest)
+      dest_path = destination(dest)
+      return false if File.exist?(dest_path) && !modified?
+
+      self.class.mtimes[path] = mtime
+
+      FileUtils.mkdir_p(File.dirname(dest_path))
+      FileUtils.rm(dest_path) if File.exist?(dest_path)
+      copy_file(dest_path)
+
+      true
+    end
+
+    def data
+      @data ||= @site.frontmatter_defaults.all(relative_path, type)
+    end
+
+    def to_liquid
+      @to_liquid ||= Drops::StaticFileDrop.new(self)
+    end
+
+    # Generate "basename without extension" and strip away any trailing periods.
+    # NOTE: `String#gsub` removes all trailing periods (in comparison to `String#chomp`)
+    def basename
+      @basename ||= File.basename(name, extname).gsub(%r!\.*\z!, "")
+    end
+
+    def placeholders
+      {
+        :collection => @collection.label,
+        :path       => cleaned_relative_path,
+        :output_ext => "",
+        :name       => basename,
+        :title      => "",
+      }
+    end
+
+    # Similar to Jekyll::Document#cleaned_relative_path.
+    # Generates a relative path with the collection's directory removed when applicable
+    #   and additionally removes any multiple periods in the string.
+    #
+    # NOTE: `String#gsub!` removes all trailing periods (in comparison to `String#chomp!`)
+    #
+    # Examples:
+    #   When `relative_path` is "_methods/site/my-cool-avatar...png":
+    #     cleaned_relative_path
+    #     # => "/site/my-cool-avatar"
+    #
+    # Returns the cleaned relative path of the static file.
+    def cleaned_relative_path
+      @cleaned_relative_path ||= begin
+        cleaned = relative_path[0..-extname.length - 1]
+        cleaned.gsub!(%r!\.*\z!, "")
+        cleaned.sub!(@collection.relative_directory, "") if @collection
+        cleaned
+      end
+    end
+
+    # Applies a similar URL-building technique as Jekyll::Document that takes
+    # the collection's URL template into account. The default URL template can
+    # be overriden in the collection's configuration in _config.yml.
+    def url
+      @url ||= begin
+        base = if @collection.nil?
+                 cleaned_relative_path
+               else
+                 Jekyll::URL.new(
+                   :template     => @collection.url_template,
+                   :placeholders => placeholders
+                 )
+               end.to_s.chomp("/")
+        base << extname
+      end
+    end
+
+    # Returns the type of the collection if present, nil otherwise.
+    def type
+      @type ||= @collection.nil? ? nil : @collection.label.to_sym
+    end
+
+    # Returns the front matter defaults defined for the file's URL and/or type
+    # as defined in _config.yml.
+    def defaults
+      @defaults ||= @site.frontmatter_defaults.all url, type
+    end
+
+    # Returns a debug string on inspecting the static file.
+    # Includes only the relative path of the object.
+    def inspect
+      "#<#{self.class} @relative_path=#{relative_path.inspect}>"
+    end
+
+    private
+
+    def copy_file(dest_path)
+      if @site.safe || Jekyll.env == "production"
+        FileUtils.cp(path, dest_path)
+      else
+        FileUtils.copy_entry(path, dest_path)
+      end
+
+      unless File.symlink?(dest_path)
+        File.utime(self.class.mtimes[path], self.class.mtimes[path], dest_path)
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/stevenson.rb

@@ -0,0 +1,60 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Stevenson < ::Logger
+    def initialize
+      @progname = nil
+      @level = DEBUG
+      @default_formatter = Formatter.new
+      @logdev = $stdout
+      @formatter = proc do |_, _, _, msg|
+        msg.to_s
+      end
+    end
+
+    def add(severity, message = nil, progname = nil)
+      severity ||= UNKNOWN
+      @logdev = logdevice(severity)
+
+      return true if @logdev.nil? || severity < @level
+
+      progname ||= @progname
+      if message.nil?
+        if block_given?
+          message = yield
+        else
+          message = progname
+          progname = @progname
+        end
+      end
+      @logdev.puts(
+        format_message(format_severity(severity), Time.now, progname, message)
+      )
+      true
+    end
+
+    # Log a +WARN+ message
+    def warn(progname = nil, &block)
+      add(WARN, nil, progname.yellow, &block)
+    end
+
+    # Log an +ERROR+ message
+    def error(progname = nil, &block)
+      add(ERROR, nil, progname.red, &block)
+    end
+
+    def close
+      # No LogDevice in use
+    end
+
+    private
+
+    def logdevice(severity)
+      if severity > INFO
+        $stderr
+      else
+        $stdout
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/tags/highlight.rb

@@ -0,0 +1,110 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Tags
+    class HighlightBlock < Liquid::Block
+      include Liquid::StandardFilters
+
+      # The regular expression syntax checker. Start with the language specifier.
+      # Follow that by zero or more space separated options that take one of three
+      # forms: name, name=value, or name="<quoted list>"
+      #
+      # <quoted list> is a space-separated list of numbers
+      SYNTAX = %r!^([a-zA-Z0-9.+#_-]+)((\s+\w+(=(\w+|"([0-9]+\s)*[0-9]+"))?)*)$!.freeze
+
+      def initialize(tag_name, markup, tokens)
+        super
+        if markup.strip =~ SYNTAX
+          @lang = Regexp.last_match(1).downcase
+          @highlight_options = parse_options(Regexp.last_match(2))
+        else
+          raise SyntaxError, <<~MSG
+            Syntax Error in tag 'highlight' while parsing the following markup:
+
+            #{markup}
+
+            Valid syntax: highlight <lang> [linenos]
+          MSG
+        end
+      end
+
+      LEADING_OR_TRAILING_LINE_TERMINATORS = %r!\A(\n|\r)+|(\n|\r)+\z!.freeze
+
+      def render(context)
+        prefix = context["highlighter_prefix"] || ""
+        suffix = context["highlighter_suffix"] || ""
+        code = super.to_s.gsub(LEADING_OR_TRAILING_LINE_TERMINATORS, "")
+
+        output =
+          case context.registers[:site].highlighter
+          when "rouge"
+            render_rouge(code)
+          when "pygments"
+            render_pygments(code, context)
+          else
+            render_codehighlighter(code)
+          end
+
+        rendered_output = add_code_tag(output)
+        prefix + rendered_output + suffix
+      end
+
+      private
+
+      OPTIONS_REGEX = %r!(?:\w="[^"]*"|\w=\w|\w)+!.freeze
+
+      def parse_options(input)
+        options = {}
+        return options if input.empty?
+
+        # Split along 3 possible forms -- key="<quoted list>", key=value, or key
+        input.scan(OPTIONS_REGEX) do |opt|
+          key, value = opt.split("=")
+          # If a quoted list, convert to array
+          if value&.include?('"')
+            value.delete!('"')
+            value = value.split
+          end
+          options[key.to_sym] = value || true
+        end
+
+        options[:linenos] = "inline" if options[:linenos] == true
+        options
+      end
+
+      def render_pygments(code, _context)
+        Jekyll.logger.warn "Warning:", "Highlight Tag no longer supports rendering with Pygments."
+        Jekyll.logger.warn "", "Using the default highlighter, Rouge, instead."
+        render_rouge(code)
+      end
+
+      def render_rouge(code)
+        require "rouge"
+        formatter = ::Rouge::Formatters::HTMLLegacy.new(
+          :line_numbers => @highlight_options[:linenos],
+          :wrap         => false,
+          :css_class    => "highlight",
+          :gutter_class => "gutter",
+          :code_class   => "code"
+        )
+        lexer = ::Rouge::Lexer.find_fancy(@lang, code) || Rouge::Lexers::PlainText
+        formatter.format(lexer.lex(code))
+      end
+
+      def render_codehighlighter(code)
+        h(code).strip
+      end
+
+      def add_code_tag(code)
+        code_attributes = [
+          "class=\"language-#{@lang.to_s.tr("+", "-")}\"",
+          "data-lang=\"#{@lang}\"",
+        ].join(" ")
+        "<figure class=\"highlight\"><pre><code #{code_attributes}>"\
+        "#{code.chomp}</code></pre></figure>"
+      end
+    end
+  end
+end
+
+Liquid::Template.register_tag("highlight", Jekyll::Tags::HighlightBlock)

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/tags/include.rb

@@ -0,0 +1,270 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Tags
+    class IncludeTag < Liquid::Tag
+      VALID_SYNTAX = %r!
+        ([\w-]+)\s*=\s*
+        (?:"([^"\\]*(?:\\.[^"\\]*)*)"|'([^'\\]*(?:\\.[^'\\]*)*)'|([\w.-]+))
+      !x.freeze
+      VARIABLE_SYNTAX = %r!
+        (?<variable>[^{]*(\{\{\s*[\w\-.]+\s*(\|.*)?\}\}[^\s{}]*)+)
+        (?<params>.*)
+      !mx.freeze
+
+      FULL_VALID_SYNTAX = %r!\A\s*(?:#{VALID_SYNTAX}(?=\s|\z)\s*)*\z!.freeze
+      VALID_FILENAME_CHARS = %r!^[\w/.-]+$!.freeze
+      INVALID_SEQUENCES = %r![./]{2,}!.freeze
+
+      def initialize(tag_name, markup, tokens)
+        super
+        markup  = markup.strip
+        matched = markup.match(VARIABLE_SYNTAX)
+        if matched
+          @file = matched["variable"].strip
+          @params = matched["params"].strip
+        else
+          @file, @params = markup.split(%r!\s+!, 2)
+        end
+        validate_params if @params
+        @tag_name = tag_name
+      end
+
+      def syntax_example
+        "{% #{@tag_name} file.ext param='value' param2='value' %}"
+      end
+
+      def parse_params(context)
+        params = {}
+        @params.scan(VALID_SYNTAX) do |key, d_quoted, s_quoted, variable|
+          value = if d_quoted
+                    d_quoted.include?('\\"') ? d_quoted.gsub('\\"', '"') : d_quoted
+                  elsif s_quoted
+                    s_quoted.include?("\\'") ? s_quoted.gsub("\\'", "'") : s_quoted
+                  elsif variable
+                    context[variable]
+                  end
+
+          params[key] = value
+        end
+        params
+      end
+
+      def validate_file_name(file)
+        if INVALID_SEQUENCES.match?(file) || !VALID_FILENAME_CHARS.match?(file)
+          raise ArgumentError, <<~MSG
+            Invalid syntax for include tag. File contains invalid characters or sequences:
+
+              #{file}
+
+            Valid syntax:
+
+              #{syntax_example}
+
+          MSG
+        end
+      end
+
+      def validate_params
+        unless FULL_VALID_SYNTAX.match?(@params)
+          raise ArgumentError, <<~MSG
+            Invalid syntax for include tag:
+
+            #{@params}
+
+            Valid syntax:
+
+            #{syntax_example}
+
+          MSG
+        end
+      end
+
+      # Grab file read opts in the context
+      def file_read_opts(context)
+        context.registers[:site].file_read_opts
+      end
+
+      # Render the variable if required
+      def render_variable(context)
+        Liquid::Template.parse(@file).render(context) if VARIABLE_SYNTAX.match?(@file)
+      end
+
+      def tag_includes_dirs(context)
+        context.registers[:site].includes_load_paths.freeze
+      end
+
+      def locate_include_file(context, file, safe)
+        includes_dirs = tag_includes_dirs(context)
+        includes_dirs.each do |dir|
+          path = PathManager.join(dir, file)
+          return path if valid_include_file?(path, dir.to_s, safe)
+        end
+        raise IOError, could_not_locate_message(file, includes_dirs, safe)
+      end
+
+      def render(context)
+        site = context.registers[:site]
+
+        file = render_variable(context) || @file
+        validate_file_name(file)
+
+        path = locate_include_file(context, file, site.safe)
+        return unless path
+
+        add_include_to_dependency(site, path, context)
+
+        partial = load_cached_partial(path, context)
+
+        context.stack do
+          context["include"] = parse_params(context) if @params
+          begin
+            partial.render!(context)
+          rescue Liquid::Error => e
+            e.template_name = path
+            e.markup_context = "included " if e.markup_context.nil?
+            raise e
+          end
+        end
+      end
+
+      def add_include_to_dependency(site, path, context)
+        if context.registers[:page]&.key?("path")
+          site.regenerator.add_dependency(
+            site.in_source_dir(context.registers[:page]["path"]),
+            path
+          )
+        end
+      end
+
+      def load_cached_partial(path, context)
+        context.registers[:cached_partials] ||= {}
+        cached_partial = context.registers[:cached_partials]
+
+        if cached_partial.key?(path)
+          cached_partial[path]
+        else
+          unparsed_file = context.registers[:site]
+            .liquid_renderer
+            .file(path)
+          begin
+            cached_partial[path] = unparsed_file.parse(read_file(path, context))
+          rescue Liquid::Error => e
+            e.template_name = path
+            e.markup_context = "included " if e.markup_context.nil?
+            raise e
+          end
+        end
+      end
+
+      def valid_include_file?(path, dir, safe)
+        !outside_site_source?(path, dir, safe) && File.file?(path)
+      end
+
+      def outside_site_source?(path, dir, safe)
+        safe && !realpath_prefixed_with?(path, dir)
+      end
+
+      def realpath_prefixed_with?(path, dir)
+        File.exist?(path) && File.realpath(path).start_with?(dir)
+      rescue StandardError
+        false
+      end
+
+      # This method allows to modify the file content by inheriting from the class.
+      def read_file(file, context)
+        File.read(file, **file_read_opts(context))
+      end
+
+      private
+
+      def could_not_locate_message(file, includes_dirs, safe)
+        message = "Could not locate the included file '#{file}' in any of "\
+          "#{includes_dirs}. Ensure it exists in one of those directories and"
+        message + if safe
+                    " is not a symlink as those are not allowed in safe mode."
+                  else
+                    ", if it is a symlink, does not point outside your site source."
+                  end
+      end
+    end
+
+    # Do not inherit from this class.
+    # TODO: Merge into the `Jekyll::Tags::IncludeTag` in v5.0
+    class OptimizedIncludeTag < IncludeTag
+      def render(context)
+        @site ||= context.registers[:site]
+
+        file = render_variable(context) || @file
+        validate_file_name(file)
+
+        @site.inclusions[file] ||= locate_include_file(file)
+        inclusion = @site.inclusions[file]
+
+        add_include_to_dependency(inclusion, context) if @site.config["incremental"]
+
+        context.stack do
+          context["include"] = parse_params(context) if @params
+          inclusion.render(context)
+        end
+      end
+
+      private
+
+      def locate_include_file(file)
+        @site.includes_load_paths.each do |dir|
+          path = PathManager.join(dir, file)
+          return Inclusion.new(@site, dir, file) if valid_include_file?(path, dir)
+        end
+        raise IOError, could_not_locate_message(file, @site.includes_load_paths, @site.safe)
+      end
+
+      def valid_include_file?(path, dir)
+        File.file?(path) && !outside_scope?(path, dir)
+      end
+
+      def outside_scope?(path, dir)
+        @site.safe && !realpath_prefixed_with?(path, dir)
+      end
+
+      def realpath_prefixed_with?(path, dir)
+        File.realpath(path).start_with?(dir)
+      rescue StandardError
+        false
+      end
+
+      def add_include_to_dependency(inclusion, context)
+        return unless context.registers[:page]&.key?("path")
+
+        @site.regenerator.add_dependency(
+          @site.in_source_dir(context.registers[:page]["path"]),
+          inclusion.path
+        )
+      end
+    end
+
+    class IncludeRelativeTag < IncludeTag
+      def tag_includes_dirs(context)
+        Array(page_path(context)).freeze
+      end
+
+      def page_path(context)
+        page, site = context.registers.values_at(:page, :site)
+        return site.source unless page
+
+        site.in_source_dir File.dirname(resource_path(page, site))
+      end
+
+      private
+
+      def resource_path(page, site)
+        path = page["path"]
+        path = File.join(site.config["collections_dir"], path) if page["collection"]
+        path.sub(%r!/#excerpt\z!, "")
+      end
+    end
+  end
+end
+
+Liquid::Template.register_tag("include", Jekyll::Tags::OptimizedIncludeTag)
+Liquid::Template.register_tag("include_relative", Jekyll::Tags::IncludeRelativeTag)

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/tags/link.rb

@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Tags
+    class Link < Liquid::Tag
+      include Jekyll::Filters::URLFilters
+
+      class << self
+        def tag_name
+          name.split("::").last.downcase
+        end
+      end
+
+      def initialize(tag_name, relative_path, tokens)
+        super
+
+        @relative_path = relative_path.strip
+      end
+
+      def render(context)
+        @context = context
+        site = context.registers[:site]
+        relative_path = Liquid::Template.parse(@relative_path).render(context)
+        relative_path_with_leading_slash = PathManager.join("", relative_path)
+
+        site.each_site_file do |item|
+          return relative_url(item) if item.relative_path == relative_path
+          # This takes care of the case for static files that have a leading /
+          return relative_url(item) if item.relative_path == relative_path_with_leading_slash
+        end
+
+        raise ArgumentError, <<~MSG
+          Could not find document '#{relative_path}' in tag '#{self.class.tag_name}'.
+
+          Make sure the document exists and the path is correct.
+        MSG
+      end
+    end
+  end
+end
+
+Liquid::Template.register_tag(Jekyll::Tags::Link.tag_name, Jekyll::Tags::Link)

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/tags/post_url.rb

@@ -0,0 +1,106 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Tags
+    class PostComparer
+      MATCHER = %r!^(.+/)*(\d+-\d+-\d+)-(.*)$!.freeze
+
+      attr_reader :path, :date, :slug, :name
+
+      def initialize(name)
+        @name = name
+
+        all, @path, @date, @slug = *name.sub(%r!^/!, "").match(MATCHER)
+        unless all
+          raise Jekyll::Errors::InvalidPostNameError,
+                "'#{name}' does not contain valid date and/or title."
+        end
+
+        basename_pattern = "#{date}-#{Regexp.escape(slug)}\\.[^.]+"
+        @name_regex = %r!^_posts/#{path}#{basename_pattern}|^#{path}_posts/?#{basename_pattern}!
+      end
+
+      def post_date
+        @post_date ||= Utils.parse_date(
+          date,
+          "'#{date}' does not contain valid date and/or title."
+        )
+      end
+
+      def ==(other)
+        other.relative_path.match(@name_regex)
+      end
+
+      def deprecated_equality(other)
+        slug == post_slug(other) &&
+          post_date.year  == other.date.year &&
+          post_date.month == other.date.month &&
+          post_date.day   == other.date.day
+      end
+
+      private
+
+      # Construct the directory-aware post slug for a Jekyll::Post
+      #
+      # other - the Jekyll::Post
+      #
+      # Returns the post slug with the subdirectory (relative to _posts)
+      def post_slug(other)
+        path = other.basename.split("/")[0...-1].join("/")
+        if path.nil? || path == ""
+          other.data["slug"]
+        else
+          "#{path}/#{other.data["slug"]}"
+        end
+      end
+    end
+
+    class PostUrl < Liquid::Tag
+      include Jekyll::Filters::URLFilters
+
+      def initialize(tag_name, post, tokens)
+        super
+        @orig_post = post.strip
+        begin
+          @post = PostComparer.new(@orig_post)
+        rescue StandardError => e
+          raise Jekyll::Errors::PostURLError, <<~MSG
+            Could not parse name of post "#{@orig_post}" in tag 'post_url'.
+             Make sure the post exists and the name is correct.
+             #{e.class}: #{e.message}
+          MSG
+        end
+      end
+
+      def render(context)
+        @context = context
+        site = context.registers[:site]
+
+        site.posts.docs.each do |document|
+          return relative_url(document) if @post == document
+        end
+
+        # New matching method did not match, fall back to old method
+        # with deprecation warning if this matches
+
+        site.posts.docs.each do |document|
+          next unless @post.deprecated_equality document
+
+          Jekyll::Deprecator.deprecation_message "A call to "\
+            "'{% post_url #{@post.name} %}' did not match " \
+            "a post using the new matching method of checking name " \
+            "(path-date-slug) equality. Please make sure that you " \
+            "change this tag to match the post's name exactly."
+          return relative_url(document)
+        end
+
+        raise Jekyll::Errors::PostURLError, <<~MSG
+          Could not find post "#{@orig_post}" in tag 'post_url'.
+          Make sure the post exists and the name is correct.
+        MSG
+      end
+    end
+  end
+end
+
+Liquid::Template.register_tag("post_url", Jekyll::Tags::PostUrl)

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/theme.rb

@@ -0,0 +1,86 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class Theme
+    extend Forwardable
+    attr_reader   :name
+
+    def_delegator :gemspec, :version, :version
+
+    def initialize(name)
+      @name = name.downcase.strip
+      Jekyll.logger.debug "Theme:", name
+      Jekyll.logger.debug "Theme source:", root
+    end
+
+    def root
+      # Must use File.realpath to resolve symlinks created by rbenv
+      # Otherwise, Jekyll.sanitized path with prepend the unresolved root
+      @root ||= File.realpath(gemspec.full_gem_path)
+    rescue Errno::ENOENT, Errno::EACCES, Errno::ELOOP
+      raise "Path #{gemspec.full_gem_path} does not exist, is not accessible "\
+        "or includes a symbolic link loop"
+    end
+
+    # The name of theme directory
+    def basename
+      @basename ||= File.basename(root)
+    end
+
+    def includes_path
+      @includes_path ||= path_for "_includes"
+    end
+
+    def layouts_path
+      @layouts_path ||= path_for "_layouts"
+    end
+
+    def sass_path
+      @sass_path ||= path_for "_sass"
+    end
+
+    def assets_path
+      @assets_path ||= path_for "assets"
+    end
+
+    def runtime_dependencies
+      gemspec.runtime_dependencies
+    end
+
+    private
+
+    def path_for(folder)
+      path = realpath_for(folder)
+      path if path && File.directory?(path)
+    end
+
+    def realpath_for(folder)
+      # This resolves all symlinks for the theme subfolder and then ensures that the directory
+      # remains inside the theme root. This prevents the use of symlinks for theme subfolders to
+      # escape the theme root.
+      # However, symlinks are allowed to point to other directories within the theme.
+      Jekyll.sanitized_path(root, File.realpath(Jekyll.sanitized_path(root, folder.to_s)))
+    rescue Errno::ENOENT, Errno::EACCES, Errno::ELOOP => e
+      log_realpath_exception(e, folder)
+      nil
+    end
+
+    def log_realpath_exception(err, folder)
+      return if err.is_a?(Errno::ENOENT)
+
+      case err
+      when Errno::EACCES
+        Jekyll.logger.error "Theme error:", "Directory '#{folder}' is not accessible."
+      when Errno::ELOOP
+        Jekyll.logger.error "Theme error:", "Directory '#{folder}' includes a symbolic link loop."
+      end
+    end
+
+    def gemspec
+      @gemspec ||= Gem::Specification.find_by_name(name)
+    rescue Gem::LoadError
+      raise Jekyll::Errors::MissingDependencyException,
+            "The #{name} theme could not be found."
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/theme_builder.rb

@@ -0,0 +1,121 @@
+# frozen_string_literal: true
+
+module Jekyll
+  class ThemeBuilder
+    SCAFFOLD_DIRECTORIES = %w(
+      assets _layouts _includes _sass
+    ).freeze
+
+    attr_reader :name, :path, :code_of_conduct
+
+    def initialize(theme_name, opts)
+      @name = theme_name.to_s.tr(" ", "_").squeeze("_")
+      @path = Pathname.new(File.expand_path(name, Dir.pwd))
+      @code_of_conduct = !!opts["code_of_conduct"]
+    end
+
+    def create!
+      create_directories
+      create_starter_files
+      create_gemspec
+      create_accessories
+      initialize_git_repo
+    end
+
+    def user_name
+      @user_name ||= `git config user.name`.chomp
+    end
+
+    def user_email
+      @user_email ||= `git config user.email`.chomp
+    end
+
+    private
+
+    def root
+      @root ||= Pathname.new(File.expand_path("../", __dir__))
+    end
+
+    def template_file(filename)
+      [
+        root.join("theme_template", "#{filename}.erb"),
+        root.join("theme_template", filename.to_s),
+      ].find(&:exist?)
+    end
+
+    def template(filename)
+      erb.render(template_file(filename).read)
+    end
+
+    def erb
+      @erb ||= ERBRenderer.new(self)
+    end
+
+    def mkdir_p(directories)
+      Array(directories).each do |directory|
+        full_path = path.join(directory)
+        Jekyll.logger.info "create", full_path.to_s
+        FileUtils.mkdir_p(full_path)
+      end
+    end
+
+    def write_file(filename, contents)
+      full_path = path.join(filename)
+      Jekyll.logger.info "create", full_path.to_s
+      File.write(full_path, contents)
+    end
+
+    def create_directories
+      mkdir_p(SCAFFOLD_DIRECTORIES)
+    end
+
+    def create_starter_files
+      %w(page post default).each do |layout|
+        write_file("_layouts/#{layout}.html", template("_layouts/#{layout}.html"))
+      end
+    end
+
+    def create_gemspec
+      write_file("Gemfile", template("Gemfile"))
+      write_file("#{name}.gemspec", template("theme.gemspec"))
+    end
+
+    def create_accessories
+      accessories = %w(README.md LICENSE.txt)
+      accessories << "CODE_OF_CONDUCT.md" if code_of_conduct
+      accessories.each do |filename|
+        write_file(filename, template(filename))
+      end
+    end
+
+    def initialize_git_repo
+      Jekyll.logger.info "initialize", path.join(".git").to_s
+      Dir.chdir(path.to_s) { `git init` }
+      write_file(".gitignore", template("gitignore"))
+    end
+
+    class ERBRenderer
+      extend Forwardable
+
+      def_delegator :@theme_builder, :name, :theme_name
+      def_delegator :@theme_builder, :user_name, :user_name
+      def_delegator :@theme_builder, :user_email, :user_email
+
+      def initialize(theme_builder)
+        @theme_builder = theme_builder
+      end
+
+      def jekyll_version_with_minor
+        Jekyll::VERSION.split(".").take(2).join(".")
+      end
+
+      def theme_directories
+        SCAFFOLD_DIRECTORIES
+      end
+
+      def render(contents)
+        ERB.new(contents).result binding
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/url.rb

@@ -0,0 +1,167 @@
+# frozen_string_literal: true
+
+# Public: Methods that generate a URL for a resource such as a Post or a Page.
+#
+# Examples
+#
+#   URL.new({
+#     :template => /:categories/:title.html",
+#     :placeholders => {:categories => "ruby", :title => "something"}
+#   }).to_s
+#
+module Jekyll
+  class URL
+    # options - One of :permalink or :template must be supplied.
+    #           :template     - The String used as template for URL generation,
+    #                           for example "/:path/:basename:output_ext", where
+    #                           a placeholder is prefixed with a colon.
+    #           :placeholders - A hash containing the placeholders which will be
+    #                           replaced when used inside the template. E.g.
+    #                           { "year" => Time.now.strftime("%Y") } would replace
+    #                           the placeholder ":year" with the current year.
+    #           :permalink    - If supplied, no URL will be generated from the
+    #                           template. Instead, the given permalink will be
+    #                           used as URL.
+    def initialize(options)
+      @template     = options[:template]
+      @placeholders = options[:placeholders] || {}
+      @permalink    = options[:permalink]
+
+      if (@template || @permalink).nil?
+        raise ArgumentError, "One of :template or :permalink must be supplied."
+      end
+    end
+
+    # The generated relative URL of the resource
+    #
+    # Returns the String URL
+    def to_s
+      sanitize_url(generated_permalink || generated_url)
+    end
+
+    # Generates a URL from the permalink
+    #
+    # Returns the _unsanitized String URL
+    def generated_permalink
+      (@generated_permalink ||= generate_url(@permalink)) if @permalink
+    end
+
+    # Generates a URL from the template
+    #
+    # Returns the unsanitized String URL
+    def generated_url
+      @generated_url ||= generate_url(@template)
+    end
+
+    # Internal: Generate the URL by replacing all placeholders with their
+    # respective values in the given template
+    #
+    # Returns the unsanitized String URL
+    def generate_url(template)
+      if @placeholders.is_a? Drops::UrlDrop
+        generate_url_from_drop(template)
+      else
+        generate_url_from_hash(template)
+      end
+    end
+
+    def generate_url_from_hash(template)
+      @placeholders.inject(template) do |result, token|
+        break result if result.index(":").nil?
+
+        if token.last.nil?
+          # Remove leading "/" to avoid generating urls with `//`
+          result.gsub("/:#{token.first}", "")
+        else
+          result.gsub(":#{token.first}", self.class.escape_path(token.last))
+        end
+      end
+    end
+
+    # We include underscores in keys to allow for 'i_month' and so forth.
+    # This poses a problem for keys which are followed by an underscore
+    # but the underscore is not part of the key, e.g. '/:month_:day'.
+    # That should be :month and :day, but our key extraction regexp isn't
+    # smart enough to know that so we have to make it an explicit
+    # possibility.
+    def possible_keys(key)
+      if key.end_with?("_")
+        [key, key.chomp("_")]
+      else
+        [key]
+      end
+    end
+
+    def generate_url_from_drop(template)
+      template.gsub(%r!:([a-z_]+)!) do |match|
+        name = Regexp.last_match(1)
+        pool = name.end_with?("_") ? [name, name.chomp!("_")] : [name]
+
+        winner = pool.find { |key| @placeholders.key?(key) }
+        if winner.nil?
+          raise NoMethodError,
+                "The URL template doesn't have #{pool.join(" or ")} keys. "\
+                "Check your permalink template!"
+        end
+
+        value = @placeholders[winner]
+        value = "" if value.nil?
+        replacement = self.class.escape_path(value)
+
+        match.sub!(":#{winner}", replacement)
+      end
+    end
+
+    # Returns a sanitized String URL, stripping "../../" and multiples of "/",
+    # as well as the beginning "/" so we can enforce and ensure it.
+    def sanitize_url(str)
+      "/#{str}".gsub("..", "/").tap do |result|
+        result.gsub!("./", "")
+        result.squeeze!("/")
+      end
+    end
+
+    # Escapes a path to be a valid URL path segment
+    #
+    # path - The path to be escaped.
+    #
+    # Examples:
+    #
+    #   URL.escape_path("/a b")
+    #   # => "/a%20b"
+    #
+    # Returns the escaped path.
+    def self.escape_path(path)
+      return path if path.empty? || %r!^[a-zA-Z0-9./-]+$!.match?(path)
+
+      # Because URI.escape doesn't escape "?", "[" and "]" by default,
+      # specify unsafe string (except unreserved, sub-delims, ":", "@" and "/").
+      #
+      # URI path segment is defined in RFC 3986 as follows:
+      #   segment       = *pchar
+      #   pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
+      #   unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
+      #   pct-encoded   = "%" HEXDIG HEXDIG
+      #   sub-delims    = "!" / "$" / "&" / "'" / "(" / ")"
+      #                 / "*" / "+" / "," / ";" / "="
+      Addressable::URI.encode(path).encode("utf-8").sub("#", "%23")
+    end
+
+    # Unescapes a URL path segment
+    #
+    # path - The path to be unescaped.
+    #
+    # Examples:
+    #
+    #   URL.unescape_path("/a%20b")
+    #   # => "/a b"
+    #
+    # Returns the unescaped path.
+    def self.unescape_path(path)
+      path = path.encode("utf-8")
+      return path unless path.include?("%")
+
+      Addressable::URI.unencode(path)
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/utils.rb

@@ -0,0 +1,367 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Utils
+    extend self
+    autoload :Ansi, "jekyll/utils/ansi"
+    autoload :Exec, "jekyll/utils/exec"
+    autoload :Internet, "jekyll/utils/internet"
+    autoload :Platforms, "jekyll/utils/platforms"
+    autoload :ThreadEvent, "jekyll/utils/thread_event"
+    autoload :WinTZ, "jekyll/utils/win_tz"
+
+    # Constants for use in #slugify
+    SLUGIFY_MODES = %w(raw default pretty ascii latin).freeze
+    SLUGIFY_RAW_REGEXP = Regexp.new('\\s+').freeze
+    SLUGIFY_DEFAULT_REGEXP = Regexp.new("[^\\p{M}\\p{L}\\p{Nd}]+").freeze
+    SLUGIFY_PRETTY_REGEXP = Regexp.new("[^\\p{M}\\p{L}\\p{Nd}._~!$&'()+,;=@]+").freeze
+    SLUGIFY_ASCII_REGEXP = Regexp.new("[^[A-Za-z0-9]]+").freeze
+
+    # Takes a slug and turns it into a simple title.
+    def titleize_slug(slug)
+      slug.split("-").map!(&:capitalize).join(" ")
+    end
+
+    # Non-destructive version of deep_merge_hashes! See that method.
+    #
+    # Returns the merged hashes.
+    def deep_merge_hashes(master_hash, other_hash)
+      deep_merge_hashes!(master_hash.dup, other_hash)
+    end
+
+    # Merges a master hash with another hash, recursively.
+    #
+    # master_hash - the "parent" hash whose values will be overridden
+    # other_hash  - the other hash whose values will be persisted after the merge
+    #
+    # This code was lovingly stolen from some random gem:
+    # http://gemjack.com/gems/tartan-0.1.1/classes/Hash.html
+    #
+    # Thanks to whoever made it.
+    def deep_merge_hashes!(target, overwrite)
+      merge_values(target, overwrite)
+      merge_default_proc(target, overwrite)
+      duplicate_frozen_values(target)
+
+      target
+    end
+
+    def mergable?(value)
+      value.is_a?(Hash) || value.is_a?(Drops::Drop)
+    end
+
+    def duplicable?(obj)
+      case obj
+      when nil, false, true, Symbol, Numeric
+        false
+      else
+        true
+      end
+    end
+
+    # Read array from the supplied hash favouring the singular key
+    # and then the plural key, and handling any nil entries.
+    #
+    # hash - the hash to read from
+    # singular_key - the singular key
+    # plural_key - the plural key
+    #
+    # Returns an array
+    def pluralized_array_from_hash(hash, singular_key, plural_key)
+      array = []
+      value = value_from_singular_key(hash, singular_key)
+      value ||= value_from_plural_key(hash, plural_key)
+
+      array << value
+      array.flatten!
+      array.compact!
+      array
+    end
+
+    def value_from_singular_key(hash, key)
+      hash[key] if hash.key?(key) || (hash.default_proc && hash[key])
+    end
+
+    def value_from_plural_key(hash, key)
+      if hash.key?(key) || (hash.default_proc && hash[key])
+        val = hash[key]
+        case val
+        when String
+          val.split
+        when Array
+          val.compact
+        end
+      end
+    end
+
+    def transform_keys(hash)
+      result = {}
+      hash.each_key do |key|
+        result[yield(key)] = hash[key]
+      end
+      result
+    end
+
+    # Apply #to_sym to all keys in the hash
+    #
+    # hash - the hash to which to apply this transformation
+    #
+    # Returns a new hash with symbolized keys
+    def symbolize_hash_keys(hash)
+      transform_keys(hash) { |key| key.to_sym rescue key }
+    end
+
+    # Apply #to_s to all keys in the Hash
+    #
+    # hash - the hash to which to apply this transformation
+    #
+    # Returns a new hash with stringified keys
+    def stringify_hash_keys(hash)
+      transform_keys(hash) { |key| key.to_s rescue key }
+    end
+
+    # Parse a date/time and throw an error if invalid
+    #
+    # input - the date/time to parse
+    # msg - (optional) the error message to show the user
+    #
+    # Returns the parsed date if successful, throws a FatalException
+    # if not
+    def parse_date(input, msg = "Input could not be parsed.")
+      Time.parse(input).localtime
+    rescue ArgumentError
+      raise Errors::InvalidDateError, "Invalid date '#{input}': #{msg}"
+    end
+
+    # Determines whether a given file has
+    #
+    # Returns true if the YAML front matter is present.
+    # rubocop: disable Naming/PredicateName
+    def has_yaml_header?(file)
+      File.open(file, "rb", &:readline).match? %r!\A---\s*\r?\n!
+    rescue EOFError
+      false
+    end
+
+    # Determine whether the given content string contains Liquid Tags or Vaiables
+    #
+    # Returns true is the string contains sequences of `{%` or `{{`
+    def has_liquid_construct?(content)
+      return false if content.nil? || content.empty?
+
+      content.include?("{%") || content.include?("{{")
+    end
+    # rubocop: enable Naming/PredicateName
+
+    # Slugify a filename or title.
+    #
+    # string - the filename or title to slugify
+    # mode - how string is slugified
+    # cased - whether to replace all uppercase letters with their
+    # lowercase counterparts
+    #
+    # When mode is "none", return the given string.
+    #
+    # When mode is "raw", return the given string,
+    # with every sequence of spaces characters replaced with a hyphen.
+    #
+    # When mode is "default" or nil, non-alphabetic characters are
+    # replaced with a hyphen too.
+    #
+    # When mode is "pretty", some non-alphabetic characters (._~!$&'()+,;=@)
+    # are not replaced with hyphen.
+    #
+    # When mode is "ascii", some everything else except ASCII characters
+    # a-z (lowercase), A-Z (uppercase) and 0-9 (numbers) are not replaced with hyphen.
+    #
+    # When mode is "latin", the input string is first preprocessed so that
+    # any letters with accents are replaced with the plain letter. Afterwards,
+    # it follows the "default" mode of operation.
+    #
+    # If cased is true, all uppercase letters in the result string are
+    # replaced with their lowercase counterparts.
+    #
+    # Examples:
+    #   slugify("The _config.yml file")
+    #   # => "the-config-yml-file"
+    #
+    #   slugify("The _config.yml file", "pretty")
+    #   # => "the-_config.yml-file"
+    #
+    #   slugify("The _config.yml file", "pretty", true)
+    #   # => "The-_config.yml file"
+    #
+    #   slugify("The _config.yml file", "ascii")
+    #   # => "the-config-yml-file"
+    #
+    #   slugify("The _config.yml file", "latin")
+    #   # => "the-config-yml-file"
+    #
+    # Returns the slugified string.
+    def slugify(string, mode: nil, cased: false)
+      mode ||= "default"
+      return nil if string.nil?
+
+      unless SLUGIFY_MODES.include?(mode)
+        return cased ? string : string.downcase
+      end
+
+      # Drop accent marks from latin characters. Everything else turns to ?
+      if mode == "latin"
+        I18n.config.available_locales = :en if I18n.config.available_locales.empty?
+        string = I18n.transliterate(string)
+      end
+
+      slug = replace_character_sequence_with_hyphen(string, :mode => mode)
+
+      # Remove leading/trailing hyphen
+      slug.gsub!(%r!^-|-$!i, "")
+
+      slug.downcase! unless cased
+      Jekyll.logger.warn("Warning:", "Empty `slug` generated for '#{string}'.") if slug.empty?
+      slug
+    end
+
+    # Add an appropriate suffix to template so that it matches the specified
+    # permalink style.
+    #
+    # template - permalink template without trailing slash or file extension
+    # permalink_style - permalink style, either built-in or custom
+    #
+    # The returned permalink template will use the same ending style as
+    # specified in permalink_style.  For example, if permalink_style contains a
+    # trailing slash (or is :pretty, which indirectly has a trailing slash),
+    # then so will the returned template.  If permalink_style has a trailing
+    # ":output_ext" (or is :none, :date, or :ordinal) then so will the returned
+    # template.  Otherwise, template will be returned without modification.
+    #
+    # Examples:
+    #   add_permalink_suffix("/:basename", :pretty)
+    #   # => "/:basename/"
+    #
+    #   add_permalink_suffix("/:basename", :date)
+    #   # => "/:basename:output_ext"
+    #
+    #   add_permalink_suffix("/:basename", "/:year/:month/:title/")
+    #   # => "/:basename/"
+    #
+    #   add_permalink_suffix("/:basename", "/:year/:month/:title")
+    #   # => "/:basename"
+    #
+    # Returns the updated permalink template
+    def add_permalink_suffix(template, permalink_style)
+      template = template.dup
+
+      case permalink_style
+      when :pretty
+        template << "/"
+      when :date, :ordinal, :none
+        template << ":output_ext"
+      else
+        template << "/" if permalink_style.to_s.end_with?("/")
+        template << ":output_ext" if permalink_style.to_s.end_with?(":output_ext")
+      end
+
+      template
+    end
+
+    # Work the same way as Dir.glob but seperating the input into two parts
+    # ('dir' + '/' + 'pattern') to make sure the first part('dir') does not act
+    # as a pattern.
+    #
+    # For example, Dir.glob("path[/*") always returns an empty array,
+    # because the method fails to find the closing pattern to '[' which is ']'
+    #
+    # Examples:
+    #   safe_glob("path[", "*")
+    #   # => ["path[/file1", "path[/file2"]
+    #
+    #   safe_glob("path", "*", File::FNM_DOTMATCH)
+    #   # => ["path/.", "path/..", "path/file1"]
+    #
+    #   safe_glob("path", ["**", "*"])
+    #   # => ["path[/file1", "path[/folder/file2"]
+    #
+    # dir      - the dir where glob will be executed under
+    #           (the dir will be included to each result)
+    # patterns - the patterns (or the pattern) which will be applied under the dir
+    # flags    - the flags which will be applied to the pattern
+    #
+    # Returns matched pathes
+    def safe_glob(dir, patterns, flags = 0)
+      return [] unless Dir.exist?(dir)
+
+      pattern = File.join(Array(patterns))
+      return [dir] if pattern.empty?
+
+      Dir.chdir(dir) do
+        Dir.glob(pattern, flags).map { |f| File.join(dir, f) }
+      end
+    end
+
+    # Returns merged option hash for File.read of self.site (if exists)
+    # and a given param
+    def merged_file_read_opts(site, opts)
+      merged = (site ? site.file_read_opts : {}).merge(opts)
+      if merged[:encoding] && !merged[:encoding].start_with?("bom|")
+        merged[:encoding] = "bom|#{merged[:encoding]}"
+      end
+      if merged["encoding"] && !merged["encoding"].start_with?("bom|")
+        merged["encoding"] = "bom|#{merged["encoding"]}"
+      end
+      merged
+    end
+
+    private
+
+    def merge_values(target, overwrite)
+      target.merge!(overwrite) do |_key, old_val, new_val|
+        if new_val.nil?
+          old_val
+        elsif mergable?(old_val) && mergable?(new_val)
+          deep_merge_hashes(old_val, new_val)
+        else
+          new_val
+        end
+      end
+    end
+
+    def merge_default_proc(target, overwrite)
+      if target.is_a?(Hash) && overwrite.is_a?(Hash) && target.default_proc.nil?
+        target.default_proc = overwrite.default_proc
+      end
+    end
+
+    def duplicate_frozen_values(target)
+      target.each do |key, val|
+        target[key] = val.dup if val.frozen? && duplicable?(val)
+      end
+    end
+
+    # Replace each character sequence with a hyphen.
+    #
+    # See Utils#slugify for a description of the character sequence specified
+    # by each mode.
+    def replace_character_sequence_with_hyphen(string, mode: "default")
+      replaceable_char =
+        case mode
+        when "raw"
+          SLUGIFY_RAW_REGEXP
+        when "pretty"
+          # "._~!$&'()+,;=@" is human readable (not URI-escaped) in URL
+          # and is allowed in both extN and NTFS.
+          SLUGIFY_PRETTY_REGEXP
+        when "ascii"
+          # For web servers not being able to handle Unicode, the safe
+          # method is to ditch anything else but latin letters and numeric
+          # digits.
+          SLUGIFY_ASCII_REGEXP
+        else
+          SLUGIFY_DEFAULT_REGEXP
+        end
+
+      # Strip according to the mode
+      string.gsub(replaceable_char, "-")
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/utils/ansi.rb

@@ -0,0 +1,57 @@
+# Frozen-string-literal: true
+
+module Jekyll
+  module Utils
+    module Ansi
+      extend self
+
+      ESCAPE = format("%c", 27)
+      MATCH = %r!#{ESCAPE}\[(?:\d+)(?:;\d+)*(j|k|m|s|u|A|B|G)|\e\(B\e\[m!ix.freeze
+      COLORS = {
+        :red     => 31,
+        :green   => 32,
+        :black   => 30,
+        :magenta => 35,
+        :yellow  => 33,
+        :white   => 37,
+        :blue    => 34,
+        :cyan    => 36,
+      }.freeze
+
+      # Strip ANSI from the current string.  It also strips cursor stuff,
+      # well some of it, and it also strips some other stuff that a lot of
+      # the other ANSI strippers don't.
+
+      def strip(str)
+        str.gsub MATCH, ""
+      end
+
+      #
+
+      def has?(str)
+        !!(str =~ MATCH)
+      end
+
+      # Reset the color back to the default color so that you do not leak any
+      # colors when you move onto the next line. This is probably normally
+      # used as part of a wrapper so that we don't leak colors.
+
+      def reset(str = "")
+        @ansi_reset ||= format("%c[0m", 27)
+        "#{@ansi_reset}#{str}"
+      end
+
+      # SEE: `self::COLORS` for a list of methods.  They are mostly
+      # standard base colors supported by pretty much any xterm-color, we do
+      # not need more than the base colors so we do not include them.
+      # Actually... if I'm honest we don't even need most of the
+      # base colors.
+
+      COLORS.each do |color, num|
+        define_method color do |str|
+          "#{format("%c", 27)}[#{num}m#{str}#{reset}"
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/utils/exec.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require "open3"
+
+module Jekyll
+  module Utils
+    module Exec
+      extend self
+
+      # Runs a program in a sub-shell.
+      #
+      # *args - a list of strings containing the program name and arguments
+      #
+      # Returns a Process::Status and a String of output in an array in
+      # that order.
+      def run(*args)
+        stdin, stdout, stderr, process = Open3.popen3(*args)
+        out = stdout.read.strip
+        err = stderr.read.strip
+
+        [stdin, stdout, stderr].each(&:close)
+        [process.value, out + err]
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/utils/internet.rb

@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Utils
+    module Internet
+      # Public: Determine whether the present device has a connection to
+      # the Internet. This allows plugin writers which require the outside
+      # world to have a neat fallback mechanism for offline building.
+      #
+      # Example:
+      #   if Internet.connected?
+      #     Typhoeus.get("https://pages.github.com/versions.json")
+      #   else
+      #     Jekyll.logger.warn "Warning:", "Version check has been disabled."
+      #     Jekyll.logger.warn "", "Connect to the Internet to enable it."
+      #     nil
+      #   end
+      #
+      # Returns true if a DNS call can successfully be made, or false if not.
+
+      module_function
+
+      def connected?
+        !dns("example.com").nil?
+      end
+
+      def dns(domain)
+        require "resolv"
+        Resolv::DNS.open do |resolver|
+          resolver.getaddress(domain)
+        end
+      rescue Resolv::ResolvError, Resolv::ResolvTimeout
+        nil
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/utils/platforms.rb

@@ -0,0 +1,67 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Utils
+    module Platforms
+      extend self
+
+      def jruby?
+        RUBY_ENGINE == "jruby"
+      end
+
+      def mri?
+        RUBY_ENGINE == "ruby"
+      end
+
+      def windows?
+        vanilla_windows? || bash_on_windows?
+      end
+
+      # Not a Windows Subsystem for Linux (WSL)
+      def vanilla_windows?
+        rbconfig_host.match?(%r!mswin|mingw|cygwin!) && proc_version.empty?
+      end
+      alias_method :really_windows?, :vanilla_windows?
+
+      # Determine if Windows Subsystem for Linux (WSL)
+      def bash_on_windows?
+        linux_os? && microsoft_proc_version?
+      end
+
+      def linux?
+        linux_os? && !microsoft_proc_version?
+      end
+
+      def osx?
+        rbconfig_host.match?(%r!darwin|mac os!)
+      end
+
+      def unix?
+        rbconfig_host.match?(%r!solaris|bsd!)
+      end
+
+      private
+
+      def proc_version
+        @proc_version ||= \
+          begin
+            File.read("/proc/version").downcase
+          rescue Errno::ENOENT, Errno::EACCES
+            ""
+          end
+      end
+
+      def rbconfig_host
+        @rbconfig_host ||= RbConfig::CONFIG["host_os"].downcase
+      end
+
+      def linux_os?
+        rbconfig_host.include?("linux")
+      end
+
+      def microsoft_proc_version?
+        proc_version.include?("microsoft")
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/utils/thread_event.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Utils
+    # Based on the pattern and code from
+    # https://emptysqua.re/blog/an-event-synchronization-primitive-for-ruby/
+    class ThreadEvent
+      attr_reader :flag
+
+      def initialize
+        @lock = Mutex.new
+        @cond = ConditionVariable.new
+        @flag = false
+      end
+
+      def set
+        @lock.synchronize do
+          yield if block_given?
+          @flag = true
+          @cond.broadcast
+        end
+      end
+
+      def wait
+        @lock.synchronize do
+          @cond.wait(@lock) unless @flag
+        end
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/utils/win_tz.rb

@@ -0,0 +1,75 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Utils
+    module WinTZ
+      extend self
+
+      # Public: Calculate the Timezone for Windows when the config file has a defined
+      #         'timezone' key.
+      #
+      # timezone - the IANA Time Zone specified in "_config.yml"
+      #
+      # Returns a string that ultimately re-defines ENV["TZ"] in Windows
+      def calculate(timezone)
+        External.require_with_graceful_fail("tzinfo") unless defined?(TZInfo)
+        tz = TZInfo::Timezone.get(timezone)
+        difference = Time.now.to_i - tz.now.to_i
+        #
+        # POSIX style definition reverses the offset sign.
+        #   e.g. Eastern Standard Time (EST) that is 5Hrs. to the 'west' of Prime Meridian
+        #   is denoted as:
+        #     EST+5 (or) EST+05:00
+        # Reference: http://www.gnu.org/software/libc/manual/html_node/TZ-Variable.html
+        sign = difference.negative? ? "-" : "+"
+        offset = sign == "-" ? "+" : "-" unless difference.zero?
+        #
+        # convert the difference (in seconds) to hours, as a rational number, and perform
+        # a modulo operation on it.
+        modulo = modulo_of(rational_hour(difference))
+        #
+        # Format the hour as a two-digit number.
+        # Establish the minutes based on modulo expression.
+        hh = format("%<hour>02d", :hour => absolute_hour(difference).ceil)
+        mm = modulo.zero? ? "00" : "30"
+
+        Jekyll.logger.debug "Timezone:", "#{timezone} #{offset}#{hh}:#{mm}"
+        #
+        # Note: The 3-letter-word below doesn't have a particular significance.
+        "WTZ#{sign}#{hh}:#{mm}"
+      end
+
+      private
+
+      # Private: Convert given seconds to an hour as a rational number.
+      #
+      # seconds - supplied as an integer, it is converted to a rational number.
+      # 3600 - no. of seconds in an hour.
+      #
+      # Returns a rational number.
+      def rational_hour(seconds)
+        seconds.to_r / 3600
+      end
+
+      # Private: Convert given seconds to an hour as an absolute number.
+      #
+      # seconds - supplied as an integer, it is converted to its absolute.
+      # 3600 - no. of seconds in an hour.
+      #
+      # Returns an integer.
+      def absolute_hour(seconds)
+        seconds.abs / 3600
+      end
+
+      # Private: Perform a modulo operation on a given fraction.
+      #
+      # fraction - supplied as a rational number, its numerator is divided
+      #            by its denominator and the remainder returned.
+      #
+      # Returns an integer.
+      def modulo_of(fraction)
+        fraction.numerator % fraction.denominator
+      end
+    end
+  end
+end

vendor/bundle/ruby/2.6.0/gems/jekyll-4.2.0/lib/jekyll/version.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+module Jekyll
+  VERSION = "4.2.0"
+end