completion: use __gitcomp_builtin in _git_merge_base

The new completion option is --all.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 4f59882..b192a5c 100644 (file)
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -1798,7 +1798,7 @@ _git_merge_base ()
 {
        case "$cur" in
        --*)
-               __gitcomp "--octopus --independent --is-ancestor --fork-point"
+               __gitcomp_builtin merge-base
                return
                ;;
        esac