action-labels need seeding

[Uday Reddy]

If one does a vm-flag-message in a new mail folder, it gets ignored. The problem seems to be that \flagged is regarded as an "action-label" and it is added only if it is declared in the folder header. Adding other labels seems to work ok. Puzzling behaviour!

[Uday Reddy (reddyuday)]

In one instance, flagging a message didn't work even though there were other messages with \\flagged in the folder. (For an IMAP folder.) A debug trace showed this failure.

Debugger entered--returning value: nil
  intern-soft("\\flagged" [0 0 0 0 ! 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0])
* vm-add-or-delete-message-labels("\\flagged" 1 t)
* (let ((labels ...)) (vm-add-or-delete-message-labels "\\flagged" count (not ...)))
* vm-flag-message(1)
  call-interactively(vm-flag-message)

Evidently, the vm-label-obarray doesn't have \\flagged. It looks like vm-startup-apply-labels didn't do its job somehow.

[Uday Reddy (reddyuday)]

Found an instance today, where the X-VM-Labels header didn't have \flagged and some other labels as well. So, the problem must be that wrong X-VM-Labels header is being written out somewhere.