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Subject: Re: gnus-undo-mode and nnimap
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Toby Speight <streapadair@gmx.net> writes:

> It works a little better now - read articles re-appear with the "M"
> mark (duplicate suppressed), which I guess is a bug with duplicate
> suppression, not nnimap...

Yes, probably.

> But if I tick an article and then undo it, it still appears as
> ticked.  Though I haven't tried, I expect the same is true of other
> changes (ticked->dormant, perhaps?).

No, only read-marks are undoable, other marks have never been undoable
even in other backends.  Perhaps we should change this?

It has some complications though.  Should it be possible to undo a
"Answered" flag?  What would that mean?  And if you undo a "dormant"
flag, should you remove the article from the cache?  What about
"Saved" flags?  "Downloadable" flags?  "Bookmark" flags?  "Expire"
flags when using total/auto-expire?

Perhaps we should only allow undo of tick flags.