This might suffice for the initial situation, as long as the expansion is
passed in with single quotes:
function check_n_run() {
greo="$1"; wild="$2"
if $(which "$greo" > /dev/null); then
$greo $wild;
fi
}
This is too cute to be useful, but it was enjoyable seeing the unintended
consequences when replace other, more used commands.
function greo() {
wild="$@"
if $(which "${FUNCNAME[0]}" > /dev/null); then
$(which "${FUNCNAME[0]}") $wild
fi
}
Dave Finlay
On Tue, Apr 22, 2014 at 1:03 PM, Chet Ramey <[email protected]> wrote:
> > On Mon, Apr 21, 2014 at 3:16 AM, Andreas Schwab <[email protected]>
> wrote:
> > > And if $greo is null the condition will also be true.
> >
> > Really? <runs quick test> I'll be damned. That explains this problem
> > I've been having.
>
> Yes. `test' operates based on the number of arguments it receives. If you
> don't quote `$greo' and it expands to nothing, test receives a single
> argument (-n), tests it for nullness, and returns success.
>
> Chet
>
> --
> ``The lyf so short, the craft so long to lerne.'' - Chaucer
> ``Ars longa, vita brevis'' - Hippocrates
> Chet Ramey, ITS, CWRU [email protected]
> http://cnswww.cns.cwru.edu/~chet/
>
>
