Re: associative array assignment from the output of a function

[Axel]

Le 22/10/2010 16:21, Greg Wooledge a écrit :
> On Fri, Oct 22, 2010 at 02:59:37PM +0200, Axel wrote:
> > Anyway, since this syntax works for assigning indexed arrays (even if
> > it's a "hack"), should it works for associative array assignment ?
> > Maintainers will decide I assume.
> But it doesn't.  You used a totally different syntax for your indexed
> array example.  If you had used the same syntax, it would have looked
> like this:
>
> imadev:~$ unset array
> imadev:~$ f() { echo '[0]=alpha [2]=beta'; }; array=( $(f) )
> imadev:~$ set | grep ^array=
> array=([0]="[0]=alpha" [1]="[2]=beta")
>
> It doesn't "work" in the indexed array case either.

Ok I see what you mean, finally it works only for indexed arrays without 
explicit indexes. I understand that point.

> There's another hazard you haven't taken into account (although it's
> only a hazard when dealing with general strings; numbers are safe).
> The unquoted substitution $(f) is subject to both word-splitting (which
> you've been taking advantage of) *and* globbing.
>
> imadev:~$ f() { echo '+ - * /'; }; array=( $(f) )
> imadev:~$ echo "${array[42]}"
> baz
> imadev:~$ echo "${array[54]}"
> blah.txt
> imadev:~$ echo ${#array[@]}
> 901
>
> If you're going to use array=( $... ) with arbitrary strings being
> possible in the substitution, then you should disable globbing first
> (with set -f) to avoid potential disasters.

Thanks again for those advices.
Regards