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Message-ID: <1428167314.5875.2.camel@niobium.home.fifi.org>
Subject: Re: How to trap EXIT like in bash
From: Philippe Troin <phil@fifi.org>
To: Thorsten Kampe <thorsten@thorstenkampe.de>
Cc: zsh-users@zsh.org
Date: Sat, 04 Apr 2015 10:08:34 -0700
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On Sat, 2015-04-04 at 17:20 +0200, Thorsten Kampe wrote:
> in Bash `trap "echo trapped" EXIT` will trigger when the script 
> terminates normally and on SIGINT, SIGTERM, and SIGHUP.
> 
> In Zsh, `trap "echo trapped" EXIT` triggers only on normal exit, but 
> `trap "echo trapped" EXIT INT` will actually trigger twice on Ctrl-C.
> 
> How can I trap normal exit, Ctrl-C, SIGTERM and SIGHUP so trap 
> function will only run once?

I use this:

trap "echo trapped; exit 0" EXIT INT

That does the trick.  Both bash and zsh print trapped only once.

I have no idea why zsh is incompatible with bash there, but this
behavior has been in zsh for quite a while.

Phil.