Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.unix.shell > #4875

Re: [zsh] How to mimic errexit within subshell (or function)?

Show all headers | View raw

2012-05-02 13:51:59 +0100, Geoff Clare:
> Stephane Chazelas wrote:
> 
> > 2012-05-01 21:20:38 +0000, kj:
> >> 
> >> The following scheme doesn't work as expected: despite the set -e
> >> (errexit), the subshell does not exit on error (it just goes on to
> >> execute the next command):
> >> 
> >> #!/usr/bin/zsh
> >> (
> >>   set -e
> >>   cmd0...
> >>   cmd1...
> >>   cmd2...
> >>   ...
> >>   echo "$0: done" 
> >> ) || { echo "$0: failed" && exit 1 }
> 
> > Try 
> >
> > zsh -ec '
> >   cmd1
> >   cmd2...
> > ' || ...
> 
> Or try
> 
> (
>   set -e
>   cmd1
>   cmd2...
> )
> test $? -eq 0 || ...
> 
> (I don't have zsh, but that works in ksh, bash and dash).
[...]

Indeed, though I had assumed "set -e" was also in effect in the
rest of the script (and "|| ..." was so that the failure of the
subshell wouldn't exit the script)

In that case, you can temporarily disable "set -e"

...
set +e
(
  set -e
  cmd1
  cmd2...
)
rc=$?
set -e
[ "$rc" -eq 0 ] || ...

-- 
Stephane

Back to comp.unix.shell | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[zsh] How to mimic errexit within subshell (or function)? kj <no.email@please.post> - 2012-05-01 21:20 +0000
  Re: [zsh] How to mimic errexit within subshell (or function)? Stephane Chazelas <stephane.chazelas@gmail.com> - 2012-05-02 07:34 +0100
    Re: [zsh] How to mimic errexit within subshell (or function)? Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2012-05-02 13:51 +0100
      Re: [zsh] How to mimic errexit within subshell (or function)? Stephane Chazelas <stephane.chazelas@gmail.com> - 2012-05-02 14:29 +0100
    Re: [zsh] How to mimic errexit within subshell (or function)? kj <no.email@please.post> - 2012-05-02 19:33 +0000
      Re: [zsh] How to mimic errexit within subshell (or function)? Stephane Chazelas <stephane.chazelas@gmail.com> - 2012-05-02 20:53 +0100
  Re: [zsh] How to mimic errexit within subshell (or function)? Martin Vaeth <vaeth@mathematik.uni-wuerzburg.de> - 2012-05-02 10:30 +0000
    Re: [zsh] How to mimic errexit within subshell (or function)? kj <no.email@please.post> - 2012-05-02 19:09 +0000
      Re: [zsh] How to mimic errexit within subshell (or function)? kj <no.email@please.post> - 2012-05-02 19:12 +0000
      Re: [zsh] How to mimic errexit within subshell (or function)? Stephane Chazelas <stephane.chazelas@gmail.com> - 2012-05-02 20:27 +0100
        Re: [zsh] How to mimic errexit within subshell (or function)? kj <no.email@please.post> - 2012-05-03 18:20 +0000

csiph-web