GNU bug report logs - #21251
sed: POSIX and the z command

Previous Next

Full log

View this message in rfc822 format

From: Assaf Gordon <assafgordon <at> gmail.com>
To: Stephane Chazelas <stephane.chazelas <at> gmail.com>
Cc: 21251 <at> debbugs.gnu.org
Subject: bug#21251: sed: POSIX and the z command
Date: Sat, 28 Jan 2017 01:48:19 +0000

Hello Stephane,

Sorry for the delayed response. I'm triaging old sed bugs.

On Thu, Aug 13, 2015 at 03:55:20PM +0100, Stephane Chazelas wrote:
> [...] The behaviour
> of sed on non-text input is unspecified, so it doesn't require
> that . not match a byte that is not part of a valid character.
> [...]
> That POSIX requirement is true for regexec() but not for text
> utilities.

I'm far from familiar with POSIX intricacies, but doesn't that sound a 
bit strange ?  I would naively think that POSIX would encourage 
POSIX-compliant test utilities to use the system's native regexec 
implenentation, instead of supporting slightl different semantics... 

> See that discussion on the Austin Group mailing list:
> http://thread.gmane.org/gmane.comp.standards.posix.austin.general/11059/focus=11098

This link seems broken. Would you know where to find this discussion 
online ?


thanks,
- assaf

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.