Needs more backslash to match escaping backslashs

Author: nobu

lib/rdoc/parser/c.rb

@@ -944,8 +944,7 @@ def handle_constants(type, var_name, const_name, definition)
         if new_definition.empty? then # Default to literal C definition
           new_definition = definition
         else
-          new_definition = new_definition.gsub("\:", ":")
-          new_definition = new_definition.gsub("\\", '\\')
+          new_definition = new_definition.gsub(/\\([\\:])/, '\1')
         end
 
         new_definition.sub!(/\A(\s+)/, '')