Can folder-hook refer to a sub-directory mailbox?

[Chris Green]

On Thu, Jun 24, 2021 at 12:30:35PM -0400, Patrick Shanahan wrote:
> * Chris Green <cl at isbd.net> [06-24-21 12:16]:
> > It's a bit difficult to explain this.
> > 
> > Is it possible for a folder-hook RE to apply to all mailboxes in a
> > sub-directory?
> > 
> > E.g. can one produce an RE for all the sub-directories of ~/mail/folder?
> > All my actual mailboxes are two levels further down:-
> > 
> >     ./folder/france
> >     ./folder/france/jobs
> >     ./folder/france/healthcare
> >     ./folder/france/healthcare/tmp
> >     ./folder/france/healthcare/new
> >     ./folder/france/healthcare/cur
> >     ./folder/france/healthcare/cur/1601033995.000001.mbox:2,
> >     ./folder/france/healthcare/cur/1601033995.000004.mbox:2,
> >     ./folder/france/healthcare/cur/1601033995.000002.mbox:2,
> >     ./folder/france/healthcare/cur/1601033995.000007.mbox:2,
> >     ./folder/france/healthcare/cur/1601033995.000003.mbox:2,
> >     ./folder/france/healthcare/cur/1601033995.000005.mbox:2,
> >     ./folder/france/healthcare/cur/1601033995.000000.mbox:2,
> >     ./folder/france/healthcare/cur/1601033995.000006.mbox:2,
> >     ./folder/france/houseSitting
> >     ./folder/france/houseSitting/tmp
> >     ./folder/france/houseSitting/new
> >     ./folder/france/houseSitting/cur
> >     ./folder/france/houseSitting/cur/1601033995.000000.mbox:2,RS
> > 
> > The mailboxes are jobs (though it's empty), healthcare and housesitting.
> > Obviously I actually have lots more mailboxes in lots more
> > sub-directories below ./folder.  Can a folder-hook RE select them all?
> > 
> > I.e. does 'folder/.*/.*' work?
> 
> 
> did you consider seting it and then trying?
> 
It's not that straightforward though is it?!  I'd have to have
something that changes very obviously with the folder-hook setting.

I was just hoping someone would simply know the answer and say 'yes'
or 'no'.

OK, if no one has tried such a thing previously I'm quite happy to try.

-- 
Chris Green