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From: Ilya Zakharevich <nospam-abuse@ilyaz.org>
Newsgroups: gmane.emacs.help
Subject: Re: will we ever have zero width assertions in regexps?
Date: Thu, 27 Jan 2011 06:34:54 +0000 (UTC)
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On 2011-01-27, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> similar to Lua's Lpeg.  I myself would also be more interested in
> replacing the backtracking matcher with a non-backtracking one (for the
> cases where backtracking is not required by backrefs).

What for?  [After my final round of backtracking-optimizations for
Perl REx engine, I do not recollect people (loudly) wanting anything
like this for Perl anymore...]

Ilya