Timo, examine these two simplified sets if you will.
This, is a properly working $inbox folder:
d /home/david/.maildir
/home/david/.maildir/dovecot.*
d /home/david/.maildir/cur
d /home/david/.maildir/new
d /home/david/.maildir/tmp
/home/david/.maildir/subscriptions
This one is not, $inbox becomes \Noselect:
d /home/david/.maildir
/home/david/.any-file
/home/david/.maildir/dovecot.*
d /home/david/.maildir/cur
d /home/david/.maildir/new
d /home/david/.maildir/tmp
/home/david/.maildir/subscriptions
i can make directories willy nilly starting with a dot, but a -file-
starting with a dot breaks my mailbox. it doesn't affect any other
folder, just $inbox
2.0.6