X-Spam-Check-By:	sourceware.org
To:	cygwin AT cygwin DOT com
From:	mwoehlke <mwoehlke AT tibco DOT com>
Subject:	Re: Possible bug in pgrep (procps)
Date:	Mon, 17 Jul 2006 17:48:58 -0500
Lines:	42
Message-ID:	<e9h44r$3gr$1@sea.gmane.org>
References:	<3820 DOT 130 DOT 240 DOT 136 DOT 130 DOT 1153173646 DOT squirrel AT pinus DOT tt DOT luth DOT se>
Mime-Version:	1.0
User-Agent:	Thunderbird 1.5.0.4 (X11/20060516)
In-Reply-To:	<3820.130.240.136.130.1153173646.squirrel@pinus.tt.luth.se>
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Unsubscribe:	<mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

Bengt-Arne Fjellner wrote:
> pgrep from procps-3.2.6-1 when asking for an exact match with arguments seems to
> demand an extra space after the argument.
> See the following sequence.
> 
> No space after the f on the commandline
> $ emacs f&
> [1] 2072
> 
> without extra space
> $ pgrep  -x -f "emacs f"
> 
> with extra space after f
> $ pgrep  -x -f "emacs f "
> 2072
> 
> Bug or my misunderstanding ?

Sure sounds like a bug, unless 'grep "foo"' is no longer supposed to 
match the line "foo "... 'man pgrep' isn't very specific on how the 
pattern matching is supposed to work, so I would assume partial matches 
are expected to work (as they would in grep).

Interestingly enough, on my computer (cygwin 1-5-19.4, procps 3.2.6-1), 
I see the following:

$ sleep 1h&
[1] 2136
$ pgrep -f 'sleep 1h'
2136
$ pgrep -f 'sleep 1h '
2136
$ pgrep -f 'sleep 1h  '
$

(Same results using ""s instead of ''s.)
This also seems wrong; 'sleep 1h ' should not have matched anything IMO. 
It does seem like there is something fishy going on.

-- 
Matthew
Interix, Sphinterix. Cygwin apps don't crash. :-)


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -