From: Thorsten Kampe <thorsten@thorstenkampe.de>
To: zsh-users@zsh.org
Subject: Re: `[[ -n $VAR ]]` equal to `[[ $VAR ]]`?
Date: Fri, 10 Apr 2015 03:39:39 +0200 [thread overview]
Message-ID: <mg79kr$vqb$2@ger.gmane.org> (raw)
In-Reply-To: <CABx2=D-VTpp3ihAE_A2KCdE3tcPu5RPuB8WJwtv-G=B0QNx0GQ@mail.gmail.com>
* Kurtis Rader (Thu, 9 Apr 2015 18:31:04 -0700)
> When I run the following
>
> [[ $VAR ]] && print yes
>
> I get a parse error. Which is what I expected given the documentation in
> section "Conditional Expressions" of "man zshall". Are you seeing different
> behavior? What makes you think a bare variable is a valid expression?
```
VAR=
if [[ $VAR ]]
then
printf "something\n"
else
printf "nothing\n"
fi
```
Works fine in zsh and bash.
Same goes for
`[[ $VAR ]] && printf "something\n" || printf "nothing\n"`
next prev parent reply other threads:[~2015-04-10 1:39 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-10 1:23 Thorsten Kampe
2015-04-10 1:31 ` Kurtis Rader
2015-04-10 1:39 ` Thorsten Kampe [this message]
2015-04-10 2:02 ` Kurtis Rader
2015-04-10 2:05 ` Kurtis Rader
2015-04-10 2:46 ` Mikael Magnusson
2015-04-10 2:59 ` Kurtis Rader
2015-04-10 4:00 ` Mikael Magnusson
2015-04-10 6:06 ` Thorsten Kampe
2015-04-13 16:52 ` Ray Andrews
2015-04-13 17:36 ` Roman Neuhauser
2015-04-13 23:58 ` Ray Andrews
2015-04-14 1:27 ` Bart Schaefer
2015-04-14 15:06 ` Ray Andrews
2015-04-10 3:21 ` Kurtis Rader
2015-04-10 2:01 ` Bart Schaefer
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