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To: linux-kernel@vger.kernel.org
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: #! incompatible -- binfmt_script.c broken?
Date: 4 Dec 2002 14:28:40 -0800
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References: <20021204113419.GA20282@merlin.emma.line.org> <20021204142628.GE26745@riesen-pc.gr05.synopsys.com> <20021204183710.GA4004@merlin.emma.line.org> <E18JgHI-0006Gx-00@chiark.greenend.org.uk>
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Followup to:  <E18JgHI-0006Gx-00@chiark.greenend.org.uk>
By author:    Matthew Garrett <mgarrett@chiark.greenend.org.uk>
In newsgroup: linux.dev.kernel
> 
> The *only* thing you can reliably use in #! lines is an interpreter
> followed by a single argument with no trailing space. On NetBSD with
> bash as /bin/sh:
> 
> mjg59@cysteine:/tmp$ cat foo.pl
> #!/bin/sh -- # -*- perl -*- -p
> mjg59@cysteine:/tmp$ ./foo.pl
> /bin/sh: -- # -*- perl -*- -p: unrecognized option
> 
> File a bug against perlrun(1).
> 

I personally think that it would be nice to split it by spaces (but
yes, ' " and \ need to be handled for this to work.)  It allows things
like using env to spawn a binary where the location of the interpreter
is to be extracted from PATH, for example.

	-hpa
-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt	<amsp@zytor.com>
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