Dmitry Gutov <dgutov@yandex.ru> writes:

> On 01/11/2023 15:12, Philip Kaludercic wrote:
>> One idea would be to just simplify the entire implementation by relying
>> on directory-files and directory-files-recursively.  Say something like
>> this:
>
> Looks, good, just once thing:
>
>> +                  (directory-files-recursively dir "" t #'file-directory-p)
>
> The argument PREDICATE is not in Emacs 26.1 (which should remain
> compatible). But it doesn't help anyway, because that predicate is
> only used to determine whether to recurse into a subdirectory, and not
> to filter out files. So the full list of all files is generated
> anyway.

OK, here is the updated patch: