push: hackish handeling of new branch head from phase move
The current head checking mechanism is not expecting "head change" from phase
movement. Topic allows that, changeset with a topic moving to public can
create a new head. We introduce a hack to double check that no head were added
at the transaction level to work around this.
# topics
Topics are an experiment to see if maybe the workflow defined by git
branches and hg bookmarks is only partially what users want - perhaps
something that feels more like a traditional VCS branch is right, but
that it should "dissolve" upon being finished. This extension exists
to be a sandbox for that experimentation.
# usage
Enable topics like any mercurial extension: download the source code to a
local directory, and add that directory to your `.hgrc`:
[extensions]
topics=path/to/hg-topics/src