ok thanks Bart, I will try experimenting on this for fun but I have
understood why it cannot work for my initial problem
regards

Il giorno sab 7 mag 2022 alle 23:44 Bart Schaefer <schaefer@brasslantern.com>
ha scritto:

> On Sat, May 7, 2022 at 2:11 PM Pier Paolo Grassi <pierpaolog@gmail.com>
> wrote:
> >
> > I am trying with
> >
> > remove_comma=(-r '[:alnum:] \t\n\-')
> > _values -O remove_comma -s , categories :message:'(aa bb cc)'
> >
> > but all I get for completion is
> > func <tab>
> > func =<cursor>
>
> Yes, that's what I mean about it not working for simple lists of
> values.  It's looking for something to appear on the left of the "="
> to tell it which action to select on the right.
>
> Sadly it's also not interpreting [:alnum:] correctly.
>
> remove_comma=(-r 'A-Za-z0-9 \t\n\-')
> _values -O remove_comma -s , -S '' categories -::message:'(aa bb cc)'
>
> works for
>
> func -<tab>
>
> but you need something non-empty before ::message: to start it off.
>
-- 
Pier Paolo Grassi