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From: Paul Eggert <eggert@cs.ucla.edu>
To: Arnold Robbins <arnold@skeeve.com>, bug-gnulib@gnu.org
Subject: Re: possible bug in regex and dfa
Date: Fri, 16 Jul 2021 21:58:56 -0500	[thread overview]
Message-ID: <85ef7fe3-c793-f082-3df1-3011fd8d0966@cs.ucla.edu> (raw)
In-Reply-To: <E1m46P6-0003HR-E3@tanda>

On 7/15/21 1:48 PM, Arnold Robbins wrote:
> The regexp used there, ".^", to my mind should be treated as invalid.

No, that regular expression is valid because "." matches newline in 
POSIX EREs. So the "." matches a newline, and the following "^" matches 
the start of the next line.



  reply	other threads:[~2021-07-17  2:59 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-15 18:48 possible bug in regex and dfa Arnold Robbins
2021-07-17  2:58 ` Paul Eggert [this message]
2021-07-18  9:01   ` Bruno Haible
2021-07-18 12:56   ` arnold
2021-07-18 16:09     ` Bruno Haible
2021-07-18 18:59       ` arnold
2021-07-18 21:45         ` regex unit tests Bruno Haible
2021-07-18 19:30       ` possible bug in regex and dfa arnold

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