 @XXX_escape_escape_chrs = ( text ) ->
   R = text
   R = R.replace /\x10/g, '\x10A'
-  R = R.replace /\x11/g, '\x10R'
-  R = R.replace /\x12/g, '\x10C'
-  R = R.replace /\x13/g, '\x10Z'
-  R = R.replace /\x14/g, '\x10H'
-  #.........................................................................................................
   R = R.replace /\x15/g, '\x10X'
   return R
 

    $2           ?= ''
    $1           += $2
    raw_content   = $3 ? ''
    id            = @XXX_register_content 'do', raw_content
    return "#{$1}\x15#{id}\x13"
  #.........................................................................................................

    ### TAINT environment becomes important for footnotes ###
    environment = {}
    md_source   = @XXX_escape_html_comments_raw_spans_and_commands md_source
    urge 'registry           ', @XXX_registry
    urge 'registry_index     ', @XXX_registry_index
    tokens      = md_parser.parse md_source, environment
