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From: Jun T <takimoto-j@kba.biglobe.ne.jp>
To: zsh-users@zsh.org
Cc: Leander Jedamus <ljedamus@googlemail.com>
Subject: Re: possible bug in zsh concerning a for loop
Date: Fri, 18 Mar 2022 17:45:22 +0900	[thread overview]
Message-ID: <646DEC1A-CEC9-47B7-9D90-954D213C25B5@kba.biglobe.ne.jp> (raw)
In-Reply-To: <ef02682f-2d96-4c7e-1d02-0d6a836b1f21@gmail.com>


> 2022/03/18 16:33, Leander Jedamus <ljedamus@googlemail.com> wrote:
> 
> items="item1 item2 item3"
> 
> for i in $items; do
>  echo "\"$i\""
> done

> This prints:
> "item1 item2 item3"

This is not a bug but a feature of zsh.
Yes, it is incompatible with other shells (sh/ksh/bash ...),
and one of the most significant incompatibilities.

See 'man zshexpn' and search for SH_WORD_SPLIT.

> It should print:
> "item1"
> "item2"
> "item3"

You can get this by:

[1] use array (instead of scalar parameter items)

a=( item1 item2 item3 )
for i in $a; do ... done

[2] use ${=items}

for i in ${=items}; do ... done

[3] set SH_WORD_SPLIT option

setopt SH_WORD_SPLIT
for i in $items; do ... done

I prefer [1], but it is up to you which method you use.


  reply	other threads:[~2022-03-18  8:49 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-18  7:33 Leander Jedamus
2022-03-18  8:45 ` Jun T [this message]
2022-03-18 14:14   ` Vincent Lefevre
2022-03-18  8:21 Leander Jedamus
2022-03-18 10:12 Leander Jedamus

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