Zsh Mailing List Archive
Messages sorted by:
Reverse Date,
Date,
Thread,
Author
Re: [PATCH] exec compatibility
- X-seq: zsh-workers 23399
- From: Phil Pennock <zsh-workers+phil.pennock@xxxxxxxxxxxx>
- To: zsh-workers@xxxxxxxxxx
- Subject: Re: [PATCH] exec compatibility
- Date: Mon, 7 May 2007 00:32:53 -0700
- Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=first1; d=spodhuis.org; h=Received:Date:From:To:Subject:Message-ID:Mail-Followup-To:References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; b=DIija0yV6blim0GVNphYxeSouX3/DflM6lT/LeDfKNaz2MaF5W6TfVVx1sMbGlBKIFq9A6e0j/KFSP13gMeqWjOpAVHPCLSBBlvnYo4AY0B9ynuZ4gOwG3Ii30uV5jmuoDNygeuB0wkrVQ/P7eGS250TV7zic58sKXXn9XhgjhQ=;
- In-reply-to: <070506225634.ZM9288@xxxxxxxxxxxxxxxxxxxxxx>
- Mail-followup-to: zsh-workers@xxxxxxxxxx
- Mailing-list: contact zsh-workers-help@xxxxxxxxxx; run by ezmlm
- References: <20070501002620.GA95730@xxxxxxxxxxxxxxxxxxxx> <20070504130023.df33e042.pws@xxxxxxx> <070506225634.ZM9288@xxxxxxxxxxxxxxxxxxxxxx>
On 2007-05-06 at 22:56 -0700, Bart Schaefer wrote:
> One thing that rather annoys me about all this is that
>
> zsh% - exec sh
> and
> zsh% exec - sh
>
> seem no longer to be equivalent. Am I wrong about that?
Uhm, I think so. Test results below, and I didn't change anything that
would affect the prefix processing of - as the first modifier and I was
very careful to ensure that a single - would be left unmolested, with
this:
while (next && *next == '-' && strlen(next) >= 2) {
bit in the options processing for the BINF_EXEC case. That code's still
there in pws's improved patch. So - always sets BINF_DASH which will be
handled as before.
Perhaps with a commit an extra comment should be added just above that
line, noting that - needs to be carefully left alone as it's a
precommand modifier in its own right. I really shouldn't have left that
unremarked upon in the code.
Nuked ~/dbg/bin/zsh* and ~/dbg/lib/zsh
Took cvs HEAD and patched with pws's patch. Built and installed, with
--prefix=$HOME/dbg set.
Below:
* Double-nesting of ./dbg/bin/zsh to protect against an accidental
extra EOF or similar mishap
* leading [N] is SHLVL, so "$ [2]" means there's a Ctrl-D in there
-pdp@xxxxxxxxxxxxxxxx:p0[0:20](1032)~% ./dbg/bin/zsh
[2]-pdp@xxxxxxxxxxxxxxxx:p0[0:20](1025)~% ./dbg/bin/zsh
[3]-pdp@xxxxxxxxxxxxxxxx:p0[0:20](1001)~% exec -l sh
$ echo $0
-sh
$ [2]-pdp@xxxxxxxxxxxxxxxx:p0[0:21](1026)~% ./dbg/bin/zsh
[3]-pdp@xxxxxxxxxxxxxxxx:p0[0:21](1001)~% - exec sh
$ echo $0
-sh
$ [2]-pdp@xxxxxxxxxxxxxxxx:p0[0:21](1027)~% ./dbg/bin/zsh
[3]-pdp@xxxxxxxxxxxxxxxx:p0[0:21](1001)~% exec - sh
$ echo $0
-sh
$ [2]-pdp@xxxxxxxxxxxxxxxx:p0[0:21](1028)~%
Messages sorted by:
Reverse Date,
Date,
Thread,
Author