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I have scoured the source code of Wanderlust and Elmo, but have not found a mechanism to save/restore queued operations across Emacs sessions -- e.g., delete certain items from the Inbox, move certain items to Spam, etc. I'd like to do work offline and kill Emacs and then open Emacs at a later date and process the queued operations. How can this be achieved?

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Wanderlust does what you want out of the box:

  • operations performed when offline are stored in a queue;
  • when starting Wanderlust online, queued operations are executed;
  • you can manually switch between online and offline using M-t.

Messages to be sent are saved in your wl-queue-folder, which must be local (+queue is good, %Queue isn't); queued actions are saved in the file .elmo/queue. Automatic flushing is controlled by the variable wl-auto-flush-queue.

The low-level code is in elmo-dop.el, the high-level interface is spread across wl.el, wl-folder.el and wl-draft.el.

  • As far as I am aware, operations such as flag setting, deleting, moving, etc, are not stored in a file -- so those operations are lost when closing Emacs. I haven't yet tracked down all the variables involved, but those variables would need to be saved to a file and restored upon a new session. Outgoing messages are stored in the queue, but I'm also after the other stuff. – lawlist Apr 25 '16 at 17:51
  • They are. Please set Wanderlust offline, delete a message, then quit Wanderlust. You will see a list of actions in your .elmo/queue. – jch Apr 25 '16 at 17:54
  • Perhaps something in my setup is misconfigured then -- I'll do some testing and report back -- thank you for putting me on the right track. – lawlist Apr 25 '16 at 17:56
  • Update: Given your hints, I believe I have tracked down my problem. The kill-emacs-hook only contains wl-save-status, not elmo-quit -- the latter is what populates the queue file. Prior to your explanation, I had never issued the command wl-exit -- I had merely killed the buffers or killed Emacs, so elmo-quit was never issued. I'm tempted to add something to the kill-emacs-hook in lieu of wl-save-status that will also trigger elmo-quit and whatever else may be needed. I'll leave that project, however, for a new day with a cup of coffee in hand -- i.e., it's bedtime . . . – lawlist Apr 26 '16 at 4:27
  • I've filed a ticket at github.com/wanderlust/wanderlust/issues/117 – jch Apr 28 '16 at 0:34

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