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Re: regex nirvana - near miss


From: Yuri Khan
Subject: Re: regex nirvana - near miss
Date: Thu, 26 Jun 2014 22:36:33 +0700

On Thu, Jun 26, 2014 at 10:18 PM, Buchs, Kevin J. <address@hidden> wrote:

> Often I wish to match a string not followed by another string, e.g. "abc"
> without "def" following. I had a glimpse of nirvana today when I thought of
> trying this RE:  abc\(def\)\{0\}, but alas it was not to be had as it gets
> optimized and just matches "abc". It is tedious to use:
> abc\([^d]\|d[^e]\|de[^f]\), especially when the second string gets longer.

What you are looking for is called a negative lookahead assertion, and
no, Emacs currently does not support them.



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