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Mail Archives: djgpp-workers/2000/10/26/12:50:05

Date: Thu, 26 Oct 2000 18:50:39 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: "Peter J. Farley III" <pjfarley AT banet DOT net>
Message-Id: <2110-Thu26Oct2000185038+0200-eliz@is.elta.co.il>
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CC: djgpp-workers AT delorie DOT com, snowball3 AT bigfoot DOT com
In-reply-to: <4.3.1.0.20001025221409.00ad89b0@pop5.banet.net>
(pjfarley AT banet DOT net)
Subject: Re: Bash 2.04 beta 6a
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> Date: Wed, 25 Oct 2000 22:32:58 -0400
> From: "Peter J. Farley III" <pjfarley AT banet DOT net>
> 
> 1.	perl calls the bash shell with the command "echo #foo"
> 2.	Something about the "#" causes bash to ignore everything starting 
> with the "#" character.
> 3.	The echo command just sees a blank, so it just outputs an empty 
> line.

If Perl passes the command to Bash, this is expected behavior.  What I
don't understand is how does this work on Unix.

There's one subtlety here that you should be aware of (perhaps it even
explains why this works on Unix, but not in DJGPP).  Our `system'
invokes Bash like this:

	bash temp-file

where `temp-file' holds the entire command line.  I'm guessing that on
Unix, `system' calls Bash like this:

        bash -c 'command line'

It is possible that # is treated differently in a file and inside the
argument to -c.

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