[Python-ideas] Adding function checks to regex

[Antoine Pitrou]

On Sat, 19 Mar 2011 03:25:57 +0000
MRAB <python at mrabarnett.plus.com> wrote:
> 
> However, it occurs to me that there may be a case for being able to call 
> a supplied function to perform such checking.

What would be such a case?
Adding more complications to the regex syntax and semantics is
something most of us would frown upon, IMHO. *Especially* if it involves
mixing in arbitrary Python callbacks referenced by name in the regex...

Regards

Antoine.