Re: Re: [PATCH] regex: support non-greedy quantifiers

[Rich Felker <dalias@libc.org>]

On Thu, Jun 16, 2016 at 09:10:50PM +0200, Szabolcs Nagy wrote:
> * Julien Ramseier <j.ramseier@gmail.com> [2016-06-16 17:33:48 +0200]:
> > > Le 13 mars 2016 à 12:06, Julien Ramseier <j.ramseier@gmail.com> a écrit :
> > > 
> > > Here's a tiny patch to enable non-greedy regex quantifiers.
> > > This is not specified by POSIX, but I think it's a useful
> > > extension, and all the code for supporting it is already present.
> ...
> > 
> > Ping?
> 
> musl is conservative about its regex syntax since extensions
> are not portable across impementations so users cannot rely
> on them.
> 
> i think this extension is not available in glibc and other
> posix regex implementations either, it's a perl invention,
> so it would be wrong to add it to musl, those who want perl
> syntax can use the pcre lib.

Indeed, and beyond the general principle of not adding extensions
without strong precedent and justification, I really do not want to be
adding new dubious extensions to something we're considering rewriting
completely. It would add implementation burden and constraints on the
new implementation.

Rich