Summary:
##arc amend## in a mercurial repo was failing with this message
Usage Exception: Commit 'HEAD^' is not a valid Mercurial commit identifier.
mercurial's .^ is about the same thing as git's HEAD^
Test Plan:
##arc amend## in a mercurial repo with ##"immutable_history" : "false"## in the
##.arcconfig##.
Reviewers: epriestley
Reviewed By: epriestley
CC: vrana, aran, Korvin
Differential Revision: https://secure.phabricator.com/D2690
Summary:
This adds basic support for mutable history for arc diff and arc amend for
mercurial. This is purely opt-in (so it shouldn't affect anyone who doesn't want
this feature) by explicitly setting
"immutable_history" : false
in arc configuration.
This also fixes another instance of weird behaviour for multiple heads - the
first instance was fixed here:
https://github.com/facebook/arcanist/pull/28
Test Plan:
without "immutable_history" turned on)>
When ##arc diff## produces an update diff, it should list only commits that are
ancestors of the current revision - not ones from other heads.
Reviewers: epriestley
CC: csilvers, aran, Koolvin
Differential Revision: https://secure.phabricator.com/D2654
Summary: We don't support `git rebase -i` or other magic in `arc amend` so we can examine just HEAD which we always amend.
Test Plan: `arc amend` on a branch with two commits.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Koolvin
Differential Revision: https://secure.phabricator.com/D2643
