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-rwxr-xr-xgit-rebase.sh19
1 files changed, 19 insertions, 0 deletions
diff --git a/git-rebase.sh b/git-rebase.sh
index 226752fbff..7185dc8438 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -14,6 +14,7 @@ git-rebase --continue | --abort | --skip | --edit-todo
v,verbose! display a diffstat of what changed upstream
q,quiet! be quiet. implies --no-stat
autostash! automatically stash/stash pop before and after
+fork-point use 'merge-base --fork-point' to refine upstream
onto=! rebase onto given branch instead of upstream
p,preserve-merges! try to recreate merges instead of ignoring them
s,strategy=! use the given merge strategy
@@ -66,6 +67,7 @@ verbose=
diffstat=
test "$(git config --bool rebase.stat)" = true && diffstat=t
autostash="$(git config --bool rebase.autostash || echo false)"
+fork_point=auto
git_am_opt=
rebase_root=
force_rebase=
@@ -260,6 +262,12 @@ do
--no-autosquash)
autosquash=
;;
+ --fork-point)
+ fork_point=t
+ ;;
+ --no-fork-point)
+ fork_point=
+ ;;
-M|-m)
do_merge=t
;;
@@ -437,6 +445,8 @@ then
error_on_missing_default_upstream "rebase" "rebase" \
"against" "git rebase <branch>"
fi
+
+ test "$fork_point" = auto && fork_point=t
;;
*) upstream_name="$1"
shift
@@ -522,6 +532,15 @@ case "$#" in
;;
esac
+if test "$fork_point" = t
+then
+ new_upstream=$(git merge-base --fork-point "$upstream_name" "$switch_to")
+ if test -n "$new_upstream"
+ then
+ upstream=$new_upstream
+ fi
+fi
+
if test "$autostash" = true && ! (require_clean_work_tree) 2>/dev/null
then
stash_sha1=$(git stash create "autostash") ||