merge: fix mergestate comment

rebase: avoid losing branch commits with --keepbranch (issue4835)

lock.release: do not unlink inherited locks This is part of a series that will allow locks to be inherited by subprocesses in limited circumstances. A subprocess unlinking a lock will lead to potential corruption from other concurrent processes.

lock: add a method to reacquire the lock after subprocesses exit This is part of a series that will allow locks to be inherited by subprocesses in limited circumstances.

lock: add a method to prepare the lock for inheritance This is part of a series that will allow locks to be inherited by subprocesses in limited circumstances.

lock: introduce state to keep track of inheritance This is part of a series that will allow locks to be inherited by subprocesses in limited circumstances. In upcoming patches we will refer to this state.

error: add an exception to indicate lock inheritance API contract violations

clone: check update rev for being True In 30be3aeb5344, there was an attempt to fallback to looking up the update revision assuming it was always a rev but the documentation states: True means update to default rev, anything else is treated as a revision Therefore, we should only fallback to looking up the update rev if it is not True. This bug was found in hg-git and I couldn't think of a test that does this in pure Mercurial since the source repository is checked for the revision as well (and therefore gracefully falls back).

clone: fix over-indented continuation line

resolve: consistently describe re-merge + unresolved