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Re: PATCH: 4.1: multi-parameter for loop

X-seq: zsh-workers 15004
From: Andrej Borsenkow <Andrej.Borsenkow@xxxxxxxxxxxxxx>
To: Peter Stephenson <pws@xxxxxxx>
Subject: Re: PATCH: 4.1: multi-parameter for loop
Date: Wed, 20 Jun 2001 22:01:28 +0400 (MSD)
Cc: Zsh hackers list <zsh-workers@xxxxxxxxxx>
In-reply-to: <Tc0a88d015442f20480@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
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On Wed, 20 Jun 2001, Peter Stephenson wrote:

>
> This extends the for syntax to take multiple parameters after it; they take
> multiple words from the argument list.  The main intended use of this is
> for imitating perl's `each' feature:
>
>   typeset -A assoc
>   assoc=(key1 val1 key2 val2)
>   for key value in ${(kv)assoc}; do
>     print $key $value
>   done
>

This for sure is incompatible with POSIX and all known shells. It does
not make legal scripts fail, but it makes illegal scripts legal. Should we
care about it?

-andrej

Follow-Ups:
- Re: PATCH: 4.1: multi-parameter for loop
  - From: Bart Schaefer

References:
- PATCH: 4.1: multi-parameter for loop
  - From: Peter Stephenson

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