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✏️ Editing: to_label.rb

require 'cgi'

##
# Creates HTML-safe labels suitable for use in id attributes.  Tidylinks are
# converted to their link part and cross-reference links have the suppression
# marks removed (\\SomeClass is converted to SomeClass).

class RDoc::Markup::ToLabel < RDoc::Markup::Formatter

attr_reader :res # :nodoc:

##
  # Creates a new formatter that will output HTML-safe labels

def initialize markup = nil
    super nil, markup

@markup.add_special RDoc::CrossReference::CROSSREF_REGEXP, :CROSSREF
    @markup.add_special(/(((\{.*?\})|\b\S+?)\[\S+?\])/, :TIDYLINK)

add_tag :BOLD, '', ''
    add_tag :TT,   '', ''
    add_tag :EM,   '', ''

@res = []
  end

##
  # Converts +text+ to an HTML-safe label

def convert text
    label = convert_flow @am.flow text

CGI.escape(label).gsub('%', '-').sub(/^-/, '')
  end

##
  # Converts the CROSSREF +special+ to plain text, removing the suppression
  # marker, if any

def handle_special_CROSSREF special
    text = special.text

text.sub(/^\\/, '')
  end

##
  # Converts the TIDYLINK +special+ to just the text part

def handle_special_TIDYLINK special
    text = special.text

return text unless text =~ /\{(.*?)\}\[(.*?)\]/ or text =~ /(\S+)\[(.*?)\]/

$1
  end

alias accept_blank_line         ignore
  alias accept_block_quote        ignore
  alias accept_heading            ignore
  alias accept_list_end           ignore
  alias accept_list_item_end      ignore
  alias accept_list_item_start    ignore
  alias accept_list_start         ignore
  alias accept_paragraph          ignore
  alias accept_raw                ignore
  alias accept_rule               ignore
  alias accept_verbatim           ignore
  alias end_accepting             ignore
  alias handle_special_HARD_BREAK ignore
  alias start_accepting           ignore

end

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