rx.rb in asciidoctor-2.0.16

- old
+ new

@@ -1,5 +1,6 @@
+# frozen_string_literal: true
 module Asciidoctor
   # A collection of regular expression constants used by the parser. (For speed, these are not defined in the Rx module,
   # but rather directly in the Asciidoctor module).
   #
   # NOTE The following pattern, which appears frequently, captures the contents between square brackets, ignoring
@@ -467,10 +468,10 @@
   #   footnote:id[text] (referenceable)
   #   footnote:id[] (reference)
   #   footnoteref:[id,text] (legacy)
   #   footnoteref:[id] (legacy)
   #
-  InlineFootnoteMacroRx = /\\?footnote(?:(ref):|:([#{CC_WORD}-]+)?)\[(?:|(#{CC_ALL}*?[^\\]))\](?!<\/a>)/m
+  InlineFootnoteMacroRx = %r(\\?footnote(?:(ref):|:([#{CC_WORD}-]+)?)\[(?:|(#{CC_ALL}*?[^\\]))\](?!</a>))m
 
   # Matches an image or icon inline macro.
   #
   # Examples
   #