From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from gatech.edu (gatech.edu [130.207.244.244]) by werple.mira.net.au (8.6.12/8.6.9) with SMTP id BAA14132 for <mason@werple.mira.net.au>; Sat, 8 Jul 1995 01:56:30 +1000
Received: from math (math.skiles.gatech.edu) by gatech.edu with SMTP id AA24719
  (5.65c/Gatech-10.0-IDA for <mason@werple.mira.net.au>); Fri, 7 Jul 1995 11:48:37 -0400
Received: by math (5.x/SMI-SVR4)
	id AA25773; Fri, 7 Jul 1995 11:45:36 -0400
Resent-Date: Fri, 7 Jul 1995 17:44:07 +0100 (MET DST)
Old-Return-Path: <hzoli@cs.elte.hu>
From: hzoli@cs.elte.hu (Zoltan Hidvegi)
Message-Id: <9507071544.AA16295@turan.elte.hu>
Subject: Re: Expansion bug?
To: cjh@ebt.com (Chris Hillery)
Date: Fri, 7 Jul 1995 17:44:07 +0100 (MET DST)
Cc: zsh-workers@math.gatech.edu (zsh-workers)
In-Reply-To: <9507061836.AA03638@spot.EBT.COM> from "Chris Hillery" at Jul 6, 95 02:36:47 pm
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Resent-Message-Id: <"WnldL3.0.dI6.VQL_l"@math>
Resent-From: zsh-workers@math.gatech.edu
X-Mailing-List: <zsh-workers@math.gatech.edu> archive/latest/175
X-Loop: zsh-workers@math.gatech.edu
Precedence: list
Resent-Sender: zsh-workers-request@math.gatech.edu

Chris Hillery <cjh@ebt.com> wrote:
> 
> I don't recall seeing this mentioned before, although I've kind of
> been skimming the list for some time.
> 
> In zsh2.6-beta1, I had the following statement:
> 
>   set -A cdpath $ROOT/{$PROJ,${(j:,:)PROJ_LIST}}/src
> 
> The part between braces expanded to a comma-separated list of $PROJ
> and then the elements of the array $PROJ_LIST (which I turned into a
> comma-separated list with the (j:,:) ).
> 
> This expanded via brace-expansion into a collection of paths like so:
> 
>  /root/project/src /root/a_proj/src /root/b_proj/src    etc.
> 
> However, when I upgraded to zsh2.6-beta10 recently, this broke. (I

The proper way to do this in recent zsh releases is

set -A cdpatch $ROOT/{$PROJ,${^PROJ_LIST}}/src

However your original method probably still works if glob_subst is set (I
haven't tried). There was a bugfix which changed that. In early zsh versions
${(s:,:)foo} did not split foo at commas as this comma here become a comma
token which is not the same as a comma character. That's why your method
worked in early versions: brace expansion needs a comma token. And if
glob_subst is set, the result of substitution is tokenized.

Cheers,
   Zoltan