bug#49809: [PATCH] Add macro 'pcase-setq'

[Michael Heerdegen]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> >   (pcase-setq (or `((,a) [(,b)])
> >                   x)
> >               '((1) [(2)]))
> >   (list a b x)) ;; ==> (1 2 nil)
>
> If you want to do different things depending on which pattern matches
> you should use `pcase` rather than `pcase-setq` (or `pcase-let` for
> that matter).

Is using a pattern like

   (or `[,a ,b] `[,a ,b ,_])

ok?


Michael.