bug#68931: 30.0.50; Gnus byte-compilation error with (display . [not expire]) with git emacs

[Eric Abrahamsen]

Dan Christensen <jdc@uwo.ca> writes:

> On Feb  5, 2024, Stefan Monnier via "Bug reports for GNU Emacs, the Swiss 
> army knife of text editors" <bug-gnu-emacs@gnu.org> wrote:
>
>> diff --git a/lisp/gnus/gnus-agent.el b/lisp/gnus/gnus-agent.el
>> index 604eea4c33d..cfcbea2e233 100644
>> --- a/lisp/gnus/gnus-agent.el
>> +++ b/lisp/gnus/gnus-agent.el
>> @@ -2925,8 +2921,9 @@ gnus-category-make-function-1
>>     ;; Functions are just returned as is.
>>     ((or (symbolp predicate)
>>      (functionp predicate))
>> -    `(,(or (cdr (assq predicate gnus-category-predicate-alist))
>> -       predicate)))
>> +    (let ((fun (or (cdr (assq predicate gnus-category-predicate-alist))
>> +               predicate)))
>> +      (if (symbolp fun) `(,fun) `(funcall ',fun))))
>>     ;; More complex predicate.
>>     ((consp predicate)
>>      `(,(cond
>
> I see that this part was committed and then reverted.  I just manually
> applied it to master, and it makes the warnings in the *Compile-Log*
> buffer go away, and my display predicate still works correctly.  The
> warnings said:
>
>  Warning: Use ‘funcall’ instead of ‘#[0 \301\300!\207 [expire
>     gnus-article-marked-p] 2]’ in the function position
>
> So I recommend that this be committed again.

It will be! I only reverted because I'd committed completely by
accident, and Stefan had mentioned it might need some equivalent
adjustments elsewhere to be completely correct. I just haven't tested it
fully yet.