Abhijit Mahabal writes:
>
> On Tue, 14 Sep 2004, Austin Hastings wrote:
>
> > I was thinking about removing files this morning, and realized that I
> > wish rm supported inclusion/exclusion.
> >
> > In particular, I wanted to remove "* but not Makefile" (since my
> > Makefile uses lwp-download to re-fetch the source code, etc.)
> >
> > It occurred to me to wonder: can P6's c<but> do the same thing?
> >
> > That is, can I say:
> >
> > $my_rex = qr/fo*/ but not 'foo';
> >
> > while (<>) {
> > unlink if /$my_rex/;
> > }
>
> The word "junction" came to my mind as I read your mail.
>
> $my_rex = qr/fo*/ & qr:not/foo/;
Judging from this, maybe we ought to have :not.
Anyway, it's still possible:
$my_rex = rx/fo*/ & none(rx/^foo$/);
Luke
