New in Miramar 3.3a3 is the feature to delete news articles. Once deleted, it isn't possible to undo this action, as it is with (IMAP) mail messages. Please add this option too...

The code I had copied in implementing delete was actually the local folders code, in the non-move-to-trash mode, which, incidentally, also doesn't implement undo of delete.

Unlike IMAP, all of our state is stored fully locally, so we really lose it when we delete it (IMAP lets the server hold on to it for a bit longer). We could probably keep the state around in the undo manager, but I shudder to think what would happen if you have offline bodies that we need to keep around...

Would disabling the menu item make sense then ?

See bug 132121: it would be essentially the same code to undo shift-delete as it would be to undo news delete, even if they aren't physically in the same location.

Not blocking 3.3 on this bug, because we're blocking it on bug 651848 which will disable the delete option until we get a fix for this bug.