Re: [PATCH] compat-2.6: Makefile: fixed test expressions for target install

[Pavel Roskin <proski@gnu.org>]

On Fri, 2009-07-31 at 20:50 +0200, Joerg Albert wrote:

> joerg@thinkpad:~$ echo $BASH_VERSION
> 3.2.39(1)-release
> joerg@thinkpad:~$ if [ -z "" && -z "" ]; then echo "both empty"; fi
> bash: [: missing `]'
> joerg@thinkpad:~$ if [ -z "" -a -z "" ]; then echo "both empty"; fi
> both empty
> joerg@thinkpad:~$ if [[ -z "" && -z "" ]]; then echo "both empty"; fi
> both empty
> joerg@thinkpad:~$

No, I didn't mean that.  I meant:

if [ -z "" ] && [ -z "" ]; then echo "both empty"; fi

> If the link for the man page of bash v1 on http://wwwbs.informatik.htw-dresden.de/fbs/bash/old.bash.html is correct,
> that version supported -a in test.
> Unfortunately [[ ... ]] was introduced after bash v1 (2.02 AFAIR).

We should not rely on any bash features as /bin/sh may not be bash at
all.

-- 
Regards,
Pavel Roskin