Date: Sun, 16 Apr 2017 15:47:56 +0200 From: Jilles Tjoelker <jilles@stack.nl> To: Kyle Evans <kevans91@ksu.edu> Cc: freebsd-hackers@freebsd.org Subject: Re: Replacing libgnuregex Message-ID: <20170416134756.GA88424@stack.nl> In-Reply-To: <CACNAnaEmBjWudEJwvRTSqyciOp7-oRbCEQ_e6qtGsap0oHQ4yw@mail.gmail.com> References: <CACNAnaEmBjWudEJwvRTSqyciOp7-oRbCEQ_e6qtGsap0oHQ4yw@mail.gmail.com>
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On Tue, Apr 11, 2017 at 03:20:58PM -0500, Kyle Evans wrote: > On the other hand, I think I could fairly easily implement most of these > into libc/regex. Here's a summary of what this option entails adding to > libc/regex, from what I've found: > [snip] > * Add backreferences (\1 through \9) to EREs > [snip] Adding this enforces that EREs, like BREs, may sometimes require exponential time to match. I would prefer to avoid that. -- Jilles Tjoelker
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