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From:	"Dave Korn" <dave DOT korn AT artimi DOT com>
To:	<jurgen DOT defurne AT philips DOT com>, <cygwin AT cygwin DOT com>
Subject:	RE: Command boxes popping up
Date:	Mon, 13 Dec 2004 15:54:53 -0000
MIME-Version:	1.0
In-Reply-To:	<OF2F5296AF.C46943D8-ONC1256F69.0054E20C-C1256F69.00560A39@philips.com>
Message-ID:	<NUTMEGQYYAr27kicP3l00000679@NUTMEG.CAM.ARTIMI.COM>
X-OriginalArrivalTime:	13 Dec 2004 15:54:53.0796 (UTC) FILETIME=[160CBA40:01C4E12C]

> -----Original Message-----
> From: cygwin-owner On Behalf Of jurgen.defurne
> Sent: 13 December 2004 15:39

> Hi Dave,
> 
> No, I have no problems with graphical applications.

  Cool, it would have _really_ confused me if you did!

> My scripts run a variety of commands, mostly cygwin,
> but some applications run in a DOS shell.
> 
> To elaborate, I run bash, and inside this shell I start 
> ActiveState Perl,
> which of course knows nothing about Cygwin. The script run by
> ActiveState's Perl, then starts system or `` commands, and it is
> from there that I get command boxes.
> 
> I have run a small test :
> $ /cygdrive/c/Perl/bin/perl -e "system \"dir\""
> 
> and this pops up a DOS command box while the command
> executes.
> 
> I did not have that before, and the only thing changed was
> the upgrade to Cygwin 1.5.11.

  Nonetheless, it would seem that ActiveState Perl is the thing with the bug in
it.  Not being a cygwin program, a change to the cygwin dll could hardly affect
ActiveState Perl's behaviour, could it?

  Well, it shouldn't of course, but I can imagine one way in which it could.

  Bear in mind that running inside the bash shell - unlike if you were to just
try your test from a cmd.exe shell - has one major difference: the $PATH setting
includes the cygwin bin directories at the front.

  Now, given that cygwin includes its own distribution of Perl, which presumably
is also called "perl.exe", we have a potential for clashes here.

  FWIW, running the example that you gave with cygwin perl doesn't produce a DOS
box.  I'm not surprised that AS perl wants to have its system commands run in a
dos box, as that's the only system it knows about.  OTOH I see Jason's post
saying that he can't reproduce your problem.  Therefore I suggest the two of you
compare $PATH settings, in particular which order AS perl and cygwin's bin
directories occur in both your $PATHs, and that may give us some further
clues...

    cheers, 
      DaveK
-- 
Can't think of a witty .sigline today....


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