Asciidoctor extension to include files from several directories defines in a an attribute

includePaths.rb

class GlobIncludeProcessor < Asciidoctor::Extensions::IncludeProcessor
  def process doc, reader, target_glob, attributes

    # paths contains absolute paths
    paths = doc.attributes['paths'].nil? ? false : doc.attributes['paths'].split(',')
    # puts paths
    # puts '-------------'
    if paths
      paths.each do |p|
        path = File.join p, target_glob
        # puts "Processing: #{path}"
        Dir[path, target_glob].sort.reverse_each do |target|
          # puts "Files found: #{target}"
          content = IO.readlines target
          content.unshift '' unless attributes['adjoin-option']
          reader.push_include content, target, target, 1, attributes
        end
      end
    # look for files from the Asciidoc file location
    elsif
      Dir[File.join reader.dir, target_glob].sort.reverse_each do |target|
        content = IO.readlines target
        content.unshift '' unless attributes['adjoin-option']
        reader.push_include content, target, target, 1, attributes
      end
    end

    reader
  end

  def handles? target
    target.include? '*'
  end
end