log: follow file history across copies even with -rREV (BC) (issue4959)
Still it falls back to changelog path if glob patterns or missing paths
are specified. This will be changed later.
.. bc::
``log --follow -rREV FILE..`` now follows file history across copies and
renames.
$ hg init
$ echo This is file a1 > a
$ hg add a
$ hg commit -m "commit #0"
$ ls
a
$ echo This is file b1 > b
$ hg add b
$ hg commit -m "commit #1"
$ hg co 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
B should disappear
$ ls
a