bug#58933: 28.2; project-buffers should take an optional filter

[Philip Kaludercic]

Dmitry Gutov <dgutov@yandex.ru> writes:

> On 02.11.2022 16:17, Sean Devlin wrote:
>> Hi Dmitry,
>> 
>>> On Nov 1, 2022, at 7:38 PM, Dmitry Gutov<dgutov@yandex.ru>  wrote:
>>>
>>> Hi Sean,
>>>
>>> On 01.11.2022 00:04, Sean Devlin wrote:
>>>
>>>> Project.el provides a function project-buffers that returns a list of
>>>> buffers associated with the given project. The list is unfiltered,
>>>> meaning any program using it will have to do some work to pick out the
>>>> buffers of interest. It would be useful if the function had an optional
>>>> argument to do this work.
>>>> Project.el already has a function project--buffer-check that validates a
>>>> buffer against a list of conditions. Maybe it should be wired into
>>>> project-buffers to do the job of filtering?
>>> There is also 'match-buffers' and 'buffer-match-p' in the core Emacs 
>>> starting with Emacs 29 (should also be available with the 'compat' package).
>>>
>>> What do you think about these alternatives?
>> Thanks for the pointer—I wasn’t aware of these functions. (I’m still on 
>> 28.2.)
>> It looks like these do fit the bill. For example, it looks like I
>> could write:
>> (match-buffers condition (project-buffers project))
>> I can’t see these functions in my local installation of compat
>> (056e3cc), but maybe definitions from Emacs 29 haven’t been added
>> yet? In any case, I’m happy to wait a little bit.
>
> Right, I'm not seeing it in there either. Perhaps it'll get there
> after Emacs 29 is released.

Right, Emacs 29 support is under development, but hasn't been completed
yet: https://git.sr.ht/~pkal/compat/tree/emacs-29.1/item/compat-29.el.

> Philip, is that the plan?

The plan is to be ready by the time Emacs 29 is released.  If possible
and I get to it, it might also be released earlier, but at the very
least I'll be waiting for the feature freeze later this month.