branch: allow a no-op "branch -M <current-branch> HEAD"
commit3f59481e338c2d3167b9654a4289a9d1201f7944
authorJonathan Nieder <jrnieder@gmail.com>
Sat, 26 Nov 2011 02:30:02 +0000 (25 20:30 -0600)
committerJunio C Hamano <gitster@pobox.com>
Mon, 28 Nov 2011 19:40:46 +0000 (28 11:40 -0800)
tree04944df5313a8383faec47b1ad5d9b0426db2841
parent017d1e134545db0d162908f3538077eaa1f34fb6
branch: allow a no-op "branch -M <current-branch> HEAD"

Overwriting the current branch with a different commit is forbidden, as it
will make the status recorded in the index and the working tree out of
sync with respect to the HEAD. There however is no reason to forbid it if
the current branch is renamed to itself, which admittedly is something
only an insane user would do, but is handy for scripts.

Test script is by Conrad Irwin.

Reported-by: Soeren Sonnenburg <sonne@debian.org>
Reported-by: Josh Chia (谢任中)
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Conrad Irwin <conrad.irwin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
builtin/branch.c
t/t3200-branch.sh