Experimental parser: add catch all rule

tools/lexer_generator/regex_lexer.py

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 89 matching lines @@
     return t
 
   t_class_RANGE = '-'
   t_class_NOT = '\^'
   t_class_CHARACTER_CLASS = r':\w+:'
 
   def t_class_CLASS_LITERAL_AS_OCTAL(self, t):
     r'\\\d+'
     return t
 
-  __escaped_class_literals = build_escape_map("^[]-:")
+  __escaped_class_literals = build_escape_map("^[]-:\\")
 
   def t_class_ESCAPED_CLASS_LITERAL(self, t):
     r'\\.'
     t.type = 'CLASS_LITERAL'
     t.value = RegexLexer.__escaped_class_literals[t.value]
     return t
 
-  t_class_CLASS_LITERAL = r'[\w $_+]'
+  t_class_CLASS_LITERAL = r'[\w $_+\']'
 
   def t_REPEAT_BEGIN(self, t):
     r'\{'
     self.lexer.push_state('repeat')
     return t
 
   def t_repeat_REPEAT_END(self, t):
     r'\}'
     self.lexer.pop_state()
     return t
 
   t_repeat_NUMBER = r'[0-9]+'
   t_repeat_COMMA = r','
 
   t_ANY_ignore  = '\n'
 
   def t_ANY_error(self, t):
     raise Exception("Illegal character '%s'" % t.value[0])
 
   def build(self, **kwargs):
     self.lexer = lex.lex(module=self, **kwargs)