commands: add more robust support for 'hg log -b' (issue2078)
Fixes issue2078 and adds tests to cover various 'hg log -b' uses.
This change adds a localrepo.lookupbranch(key, remote=None) function. This
will look up the branch of the revision with the given key. The algorithm
works like this:
* If a remote repo is given and KEY is the name of a branch in that repo,
return KEY.
* If no remote repo is given and KEY is the name of a branch in the local
repo object, return KEY.
* Otherwise look up the revision with the identifier KEY in the local repo
and return its branch.
This change also makes 'hg log -b' use this new functionality and adds a few
tests for it.
changeset: 2:effea6de0384
tag: tip
parent: 0:bbd179dfa0a7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: add bar
changeset: 1:ed1b79f46b9a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: change foo
changeset: 0:bbd179dfa0a7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: add foo
% pull a missing revision
abort: unknown revision 'missing'!
% pull multiple revisions with update
0:bbd179dfa0a7
rolling back to revision 0 (undo pull)
% pull -r 0
changeset: 0:bbd179dfa0a7
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: add foo
% pull -r 1
changeset: 1:ed1b79f46b9a
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: change foo
changeset: 0:bbd179dfa0a7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: add foo
% pull -r 1 again