Re: [Emacs-diffs] master 938d252 4/4: Make regex matching reentrant; update syntax during match

[Paul Eggert]

On 06/19/2018 09:54 AM, John Wiegley wrote:
> If we do find a problem with it, how long will it take before the fix we need
> is propagated everywhere it needs to go?

It shouldn't take much time at all to propagate Emacs-related regex 
changes back to Gnulib, which is commonly used by GNU applications like 
'grep' so that they can assume the same regex API everywhere. It would 
take more time to propagate the changes back into Glibc, but the 
distance between Gnulib regex and Glibc regex is relatively small (it's 
way less than the distance between Emacs regex and Glibc regex) and it's 
feasible to do that propagation (mostly, this means to jump the Glibc 
bureaucratic hurdles).