transplant: do not rollback on patching error (issue3379) Otherwise, all transplanted revisions are gone and the failing one cannot be fixed (unless it is the first one). I do not know what is the expected behaviour with rollback, probably something pull-like. Non-conflicting cases should work as previously. But something like: $ hg transplant r1 r2 commiting r1 as c1 failing r2 $ hg transplant --continue committing r2 as c2 $ hg rollback would reset the repository to its state before the "transplant --continue" instead of the whole transplant session. To fix this we might need a way to open an existing journal file, not sure this is worth the pain.