* a better way to 'die'?
@ 2011-09-24 18:09 TJ Luoma
2011-09-24 18:47 ` Mikael Magnusson
0 siblings, 1 reply; 2+ messages in thread
From: TJ Luoma @ 2011-09-24 18:09 UTC (permalink / raw)
To: Zsh Users
I have a function 'die' in my .zshenv that looks like this:
die () {
echo "$@"
if [ "$SHLVL" = "1" ]
then
return 1
else
exit 1
fi
}
The purpose is so I can do things like:
[[ -e "/path/to/file.txt" ]] || die "Did not find /path/to/file.txt!"
to easily quit a loop (using return 1) or a script (using exit 1)
after echoing a message explaining where things broke down. (That
seems better than just throwing an 'exit 1' or 'return 1' and leaving
the user — usually me — to figure out where things failed.)
Is there a better way to do this?
TjL
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: a better way to 'die'?
2011-09-24 18:09 a better way to 'die'? TJ Luoma
@ 2011-09-24 18:47 ` Mikael Magnusson
0 siblings, 0 replies; 2+ messages in thread
From: Mikael Magnusson @ 2011-09-24 18:47 UTC (permalink / raw)
To: TJ Luoma; +Cc: Zsh Users
On 24 September 2011 20:09, TJ Luoma <tj@luo.ma> wrote:
> I have a function 'die' in my .zshenv that looks like this:
>
> die () {
>
> echo "$@"
>
> if [ "$SHLVL" = "1" ]
> then
> return 1
> else
> exit 1
> fi
> }
>
> The purpose is so I can do things like:
>
> [[ -e "/path/to/file.txt" ]] || die "Did not find /path/to/file.txt!"
>
> to easily quit a loop (using return 1) or a script (using exit 1)
> after echoing a message explaining where things broke down. (That
> seems better than just throwing an 'exit 1' or 'return 1' and leaving
> the user — usually me — to figure out where things failed.)
>
> Is there a better way to do this?
If you have a recent enough zsh, look at $zsh_eval_context[-1]
--
Mikael Magnusson
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-09-24 18:09 a better way to 'die'? TJ Luoma
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