[issue219] need a way to export all outgoing changes as a single diff

[John Levon]

John Levon <levon at movementarian.org> added the comment:

I found a more serious problem: I had a 'tags' file created, and it
ended up in the changeset!

Also, somehow I ended up with the changeset committed as tip, even though
I didn't use -k. And I can't rollback, so my repo is essentially corrupt again...

(Another problem with not using -k: if I want an editor for the changeset,
there's no easy way to redirect the diff to a file).

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Mercurial issue tracker <mercurial-bugs at selenic.com>
<http://www.selenic.com/mercurial/bts/issue219>
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