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Re: Patch for lookaround assertion in regexp


From: Nikolai Weibull
Subject: Re: Patch for lookaround assertion in regexp
Date: Wed, 25 Jan 2012 07:07:22 +0100

On Wed, Jan 25, 2012 at 00:27, David De La Harpe Golden
<address@hidden> wrote:
> On 24/01/12 08:41, Nikolai Weibull wrote:
>>
>> As an alternative to PCRE, which, as has already been pointed out,
>> doesn’t match any of these requirements, how about RE2?
>>
>> http://code.google.com/p/re2/
>>
>> It’s written in C++, which is a minus, but it should be simple enough
>> to extend it with \c and \s.

> If we're mentioning engines, CL-PPCRE by Dr. Edi Weitz is _in_ (common) lisp
> and generally nice (also 2-clause BSD-style licensed):
> http://weitz.de/cl-ppcre/

CL-PPCRE is implemented using a backtracing NFA, so it’s not suited to
Stefan’s requirements.  It would, had it not been for this fact, been
a nice alternative.



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