Export changesets since a revision + 1

[David Demelier]

Hello,

I'm guessing what is the easiest way to export a patch since the last
revision + 1 pulled locally from an upstream repository.

Example, I clone a repository that use the @ bookmark where I don't
have write access, I commit two changesets that I want to send as a
patch later.

hg clone repo-url && cd repo-url
hg book -i @ (don't move @ to reference it as the last upstream commit)
... work ...
hg ci -m "feature added"
... work ...
hg ci -m "tests"

Now, @ still points to the last revision upstream, I want to export
descendants of @ but not including @.

hg export -r "@::." will export 3 changesets, one at @ and the two added by me.

It seems that hg export -r ". % @" works but I'm not sure if it's the
correct one :)

Do you have an easy revset to remember? Or any other recommandations?
I know that exporting only one commit is preferred but I'm thinking in
case of a really big patch that requires much more commits :)

Regards,

-- 
Demelier David