GNU bug report logs - #36820
grep "[[:cntrl:]]" /proc/1/cmdline works on 2.20 but not 3.3

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Message #19 received at 36820 <at> debbugs.gnu.org (full text, mbox):

From: Jeff Chua <jeff.chua.linux <at> gmail.com>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 36820 <at> debbugs.gnu.org
Subject: Re: bug#36820: grep "[[:cntrl:]]" /proc/1/cmdline works on 2.20 but
 not 3.3
Date: Mon, 29 Jul 2019 19:30:36 +0800

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> No, as that would mean the default output of grep would not be text, and
this could mess up terminals etc. This is partly why -a has never been
the default. If you want -a behavior you can use -a.

Ok, thanks for the clarification.

My best.,
Jeff


On Mon, Jul 29, 2019 at 6:59 AM Paul Eggert <eggert <at> cs.ucla.edu> wrote:

> On 7/28/19 3:04 AM, Jeff Chua wrote:
> > Then if it's binary file, grep should default to "-a"
>
> No, as that would mean the default output of grep would not be text, and
> this could mess up terminals etc. This is partly why -a has never been
> the default. If you want -a behavior you can use -a.
>
>

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