How to checkout a single file from one branch to another in Mercurial?
Basically I want to copy a single file from a branch experimental to another branch production.
You can show any file at any revision with hg cat -r experimental filename. But this kind of behavior looks like a debugging patch, in which case I would consider transplanting (cherry-picking in other DVCS).
hg revert -r experimental filename could do it, not tested.