Logged In: YES 
user_id=7887

Applied as: 
 
Lib/sre_parse.py: 1.62 
Lib/test/test_re.py: 1.51 
Doc/lib/libre.tex: 1.109 
 
It was a little bit modified to adapt to the current CVS version. 
 
I've also reimplemented the logic of numeric escaping with a logic 
similar to what is used in _escape() function, making it a little bit 
faster and removing the need for the external function. 
 
I'm attaching the applied patch for reference. Please, let me know if 
you have any comments. 
 
Thanks a lot for the patch!