On Sat, Mar 25, 2023, 13:20 Eli Zaretskii <eliz@gnu.org> wrote:

> > From: João Távora <joaotavora@gmail.com>
> > Date: Sat, 25 Mar 2023 13:04:24 +0000
> > Cc: "Philip K." <philipk@posteo.net>, 62417@debbugs.gnu.org
> >
> > On Sat, Mar 25, 2023, 12:55 Eli Zaretskii <eliz@gnu.org> wrote:.
> >
> >  >
> >  > So it is most clearly a regression.
> >
> >  There's something missing in the above description, since
> >  buffer-match-p accepts a function as its CONDITION argument, and calls
> >  that function with the buffer and ACTION.  So it sounds like code
> >  written for Emacs 28 should still work.  What is missing here that
> >  explains the breakage?
> >
> > As I highlighted, Emacs used to call such functions with a buffer _name_
> and an action. Now it calls them
> > with a buffer _object_ and an action.
>
> No, buffer-match-p accepts a buffer object _or_ a buffer name as its
> first argument.
>

Second argument.

>
But you're confused: this is not about buffer-match-p's arguments. It's
about the arguments to the function that you may also pass to
buffer-match-p in it's first CONDITION argument. Use my simple recipe in
both Emacs 28 and 29.

João