obsolete: store user name and note in UTF-8 (issue5754) (BC) Before, user names were stored in local encoding and transferred across repositories, which made it impossible to restore non-ASCII user names on different platforms. This patch fixes new markers to be encoded in UTF-8 and decoded back to local encoding when displaying. Existing markers are unfixable so they may result in mojibake. I don't like the API that requires metadata dict to be UTF-8 encoded, which is a source of bugs, but there's no abstraction layer to process the encoding thingy efficiently. So we apply the same rule as extras dict to obsstore metadata.

--- a/mercurial/debugcommands.py	Sun Jul 15 18:22:40 2018 +0900
+++ b/mercurial/debugcommands.py	Sun Jul 15 18:24:57 2018 +0900
@@ -1619,7 +1619,7 @@
         if opts['rev']:
             raise error.Abort('cannot select revision when creating marker')
         metadata = {}
-        metadata['user'] = opts['user'] or ui.username()
+        metadata['user'] = encoding.fromlocal(opts['user'] or ui.username())
         succs = tuple(parsenodeid(succ) for succ in successors)
         l = repo.lock()
         try: