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From: Ian Pilcher <arequipeno@gmail.com>
Subject: Re: Does regex.h support lookahead?
Date: Tue, 18 May 2021 11:00:38 -0500
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On 5/17/21 9:18 AM, tomas@tuxteam.de wrote:
> As far as I know, no. Regex.h supports exactly POSIX (extended) regular
> expressions.

Fortunately, the PCRE library exists.

   http://pcre.org/

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