GNU bug report logs - #50219
28.0.50; Provide better errors when trying to specialize on optional args in generic methods

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Eric Abrahamsen <eric <at> ericabrahamsen.net>, 50219 <at> debbugs.gnu.org
Subject: bug#50219: 28.0.50; Provide better errors when trying to specialize on optional args in generic methods
Date: Sat, 28 Aug 2021 19:49:11 +0200

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

> The default value part of args in Common lisp arglists is an
> *expression*, so (b string) just means that `b` should take the value of
> the `string` variable.
>
> The best I can see (if we keep the CL arglist feature) is to try and see
> if that expression looks like a valid CLOS specializer and if so emit
> a warning about possible confusion.

Yes, that's what I tried to say.  :-)

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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