bug#36714: 27.0.50; Gnus nnmaildir taking long time to recursively visit sub-Maildirs

[Basil L. Contovounesios]

Eric Abrahamsen <eric@ericabrahamsen.net> writes:

> Second of all... unfortunately I don't know this code well enough to
> figure it out without sitting down with a chunk of time. So far as I can
> tell, nnmaildir scans the maildir directories using `directory-files',
> which by itself is very quick. Presumably what's slow is registering all
> the messages inside the directories, and I don't immediately see a way
> of preventing that.

Would it be possible to do custom directory filtering in the
'directory-files' virtual server setting of the nnmaildir backend?

-- 
Basil