Tassilo Horn <tsdh@gnu.org> writes:

> I think my patch is valid but now I think I should just create a
> separate function dired-buffers-for-cleanup and use that from
> dired-clean-up-after-deletion (or just collect the buffers in that
> function) and remove the SUBDIRS argument from dired-buffers-for-dir
> as it changes its logic too drastically.
>
> I'll prepare a patch in that direction later.

Here it is: