GNU bug report logs - #30681
What characters are in [[:space:]]?

Previous Next

Full log

Message #13 received at 30681-done <at> debbugs.gnu.org (full text, mbox):

From: Jim Meyering <jim <at> meyering.net>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 30681-done <at> debbugs.gnu.org, Peng Yu <pengyu.ut <at> gmail.com>
Subject: Re: bug#30681: What characters are in [[:space:]]?
Date: Fri, 2 Mar 2018 15:19:08 -0800

tags 30681 notabug
stop

On Fri, Mar 2, 2018 at 2:32 PM, Paul Eggert <eggert <at> cs.ucla.edu> wrote:
> On 03/02/2018 09:23 AM, Peng Yu wrote:
>>
>> Where is this info documented for grep?
>
> It's not documented for grep because it's not part of grep. It's part of
> your locale.

You can check for yourself.
In every one of the 818 locales installed on a Fedora 27 system, I see
the same five bytes:

$ perl -e 'print pack ("C*", 0..255);'|grep -ao '[[:space:]]'|tr -d
'\n' |od -ac -An
  ht  vt  ff  cr  sp
  \t  \v  \f  \r

Previous Next

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