From: Thorsten Kampe <thorsten@thorstenkampe.de>
To: zsh-users@zsh.org
Subject: Catch `setopt nounset`
Date: Thu, 9 Apr 2015 18:30:08 +0200 [thread overview]
Message-ID: <mg69er$i52$1@ger.gmane.org> (raw)
Hi,
I'd to catch the call of a parameter that does not exist with `setopt
nounset`.
```
setopt nounset
testfunc() {
printf "$DOESNOTEXIST\n"
}
if testfunc
then
printf "no error\n"
else
printf "error\n"
fi
```
This does not work. Neither the then nor else clause are entered. If
I replace the `catch` statement with `if result=$(testfunc)` it
prints "error". What am I missing here? Why does the latter work but
not the former?
```
if result=$(testfunc)
then
printf "no error\n"
else
printf "error\n"
fi
```
Thorsten
next reply other threads:[~2015-04-09 16:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-09 16:30 Thorsten Kampe [this message]
2015-04-09 18:42 ` Bart Schaefer
2015-04-10 1:11 ` Thorsten Kampe
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='mg69er$i52$1@ger.gmane.org' \
--to=thorsten@thorstenkampe.de \
--cc=zsh-users@zsh.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).