context: change default changeid from old form '' to '.'
I don't think I've seen repo[''] in the codebase at least in the last
two years.
Differential Revision: https://phab.mercurial-scm.org/D2964
--- a/mercurial/context.py Wed Mar 21 23:36:11 2018 +0530
+++ b/mercurial/context.py Thu Mar 29 09:34:17 2018 -0700
@@ -415,7 +415,7 @@
"""A changecontext object makes access to data related to a particular
changeset convenient. It represents a read-only context already present in
the repo."""
- def __init__(self, repo, changeid=''):
+ def __init__(self, repo, changeid='.'):
"""changeid is a revision number, node, or tag"""
# since basectx.__new__ already took care of copying the object, we