Re: [1003.1(2008)/Issue 7 0000305]: Allow RE handling to reject suspicious uses

[Glenn Fowler]

On Wed, 01 Sep 2010 16:55:25 -0600 Eric Blake wrote:
> > would this mean an implementation could add a new<regex.h>  error code?

> It may indeed be worthwhile to reword the bug 305 proposal to allow an 
> implementation to extend <regex.h> in that manner, although it is not 
> strictly necessary (GNU grep's warning was implemented without the need 
> of a new <regex.h> error code).

on this (at&t ast) side just about all things RE are handled by <regex.h>
mostly because we loathe diffs between RE based utilities
e.g., if ast grep hits an RE error then sed ed ... will too