histedit: prevent parent guessed via --outgoing from being a revset (issue3770)...
histedit: prevent parent guessed via --outgoing from being a revset (issue3770)
If the binary hash of the parent node guessed via --outgoing happened
to contain a special revset character (":" was specified in the bug),
the revset parser would abort. Hexlifying the node before passing it
to the revsingle call should fix that.