Subject: bug#20420: 25.0.50; eieio methods with optional arguments now fail

From: Stefan Monnier <[email-masked]>
Date: Tue, 12 May 2015 00:19:09 -0400

> No, it's more a wishlist item: add support for formal pseudo-arguments
> of the form "&context (<exp> <specializer>)".

It's now implemented.
We should now remove gui-method and use that instead.
And as you mentioned, it probably (at least partly) obsoletes
define-overloadable-function/define-mode-local-override.

        Stefan