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Re: -e does not work with subscript


From: Pierre Gaston
Subject: Re: -e does not work with subscript
Date: Tue, 29 Jan 2008 09:08:12 +0200

On Jan 28, 2008 11:36 PM,  <address@hidden> wrote:
> Configuration Information [Automatically generated, do not change]:
> Machine: i486
> OS: linux-gnu
> Compiler: gcc
> Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i486' 
> -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i486-pc-linux-gnu' 
> -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL 
> -DHAVE_CONFIG_H   -I.  -I../bash -I../bash/include -I../bash/lib   -g -O2
> uname output: Linux hilbert 2.6.18-openvz-amd64 #1 SMP Tue Apr 10 19:34:07 
> MSD 2007 i686 GNU/Linux
> Machine Type: i486-pc-linux-gnu
>
> Bash Version: 3.1
> Patch Level: 17
> Release Status: release
>
> Description:
>         failed subscript does not cause script to exit, while -e is set
>
> Repeat-By:
>
>         % cat aa.sh
>         set -e
>
>         (
>             false
>         )
>
>         echo "unreachable"
>
>         % bash ./aa.sh
>         unreachable
>         % zsh ./aa.sh
>         zsh: exit 1     zsh ./aa.sh
>
>         Script aa.sh is expected to exit with error and print nothing. In 
> bash it prints "unreachable".
>
>
bash exits the subshell you create with ( )  and not the shell:

$ bash -ce '(false;echo foo);echo bar'
bar




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