tree f5e3a0f2b336c05ffbedc12238968ebdf2ca70e4
parent da72936f544fec5a335e66432610e4cef4430991
author Junio C Hamano <gitster@pobox.com> 1575917507 -0800
committer Junio C Hamano <gitster@pobox.com> 1581443979 -0800

rebase: --fork-point regression fix

"git rebase --fork-point master" used to work OK, as it internally
called "git merge-base --fork-point" that knew how to handle short
refname and dwim it to the full refname before calling the
underlying get_fork_point() function.

This is no longer true after the command was rewritten in C, as its
internall call made directly to get_fork_point() does not dwim a
short ref.

Move the "dwim the refname argument to the full refname" logic that
is used in "git merge-base" to the underlying get_fork_point()
function, so that the other caller of the function in the
implementation of "git rebase" behaves the same way to fix this
regression.

Signed-off-by: Alex Torok <alext9@gmail.com>
[jc: revamped the fix and used Alex's tests]
Signed-off-by: Junio C Hamano <gitster@pobox.com>