revset: fix aliases with 0 or more than 2 parameters The existing code seemed to have incorrect assumptions about how parameter lists are represented by the parser. Now the match and replace functions have been merged and simplified by using getlist().

match: fix bug caused by refactoring in cfc89398f710

revert: be more helpful on uncommitted merges BEFORE: $ hg revert abort: no files or directories specified (use --all to discard all changes) AFTER: $ hg revert abort: no files or directories specified (uncommitted merge, use --all to discard all changes, or 'hg update -C .' to abort the merge)

opener: add self._audit (issue2862)

cmdserver: write the hello message as one chunk on the 'o' channel This is a guaranteed by the protocol: clients know they need to read one chunk off of the 'o' channel and treat that as the hello message. They should ignore fields they don't recognize so they stay compatible with new versions of the server in case we decide to add something.

fileset: copied takes no arguments

revset and fileset: fix typos in parser error messages

fileset: use ParseError pos field correctly The pos field is intended to describe the position of the error - it should not be used for other potentially interesting information.