Merge branch 'jk/cat-file-regression-fix'

diff --git a/git-rebase.sh b/git-rebase.sh
index 8d7659a22c253b9f9535aee38e3bf0ce380cef75..7185dc84387d6e20299fdda86800372445b9318e 100755 (executable)
--- 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=
@@ -167,13 +169,22 @@ You can run "git stash pop" or "git stash drop" at any time.
        rm -rf "$state_dir"
 }
 
-run_specific_rebase () {
+run_specific_rebase_internal () {
        if [ "$interactive_rebase" = implied ]; then
                GIT_EDITOR=:
                export GIT_EDITOR
                autosquash=
        fi
+       # On FreeBSD, the shell's "return" returns from the current
+       # function, not from the current file inclusion.
+       # run_specific_rebase_internal has the file inclusion as a
+       # last statement, so POSIX and FreeBSD's return will do the
+       # same thing.
        . git-rebase--$type
+}
+
+run_specific_rebase () {
+       run_specific_rebase_internal
        ret=$?
        if test $ret -eq 0
        then
@@ -251,6 +262,12 @@ do
        --no-autosquash)
                autosquash=
                ;;
+       --fork-point)
+               fork_point=t
+               ;;
+       --no-fork-point)
+               fork_point=
+               ;;
        -M|-m)
                do_merge=t
                ;;
@@ -428,6 +445,8 @@ then
                        error_on_missing_default_upstream "rebase" "rebase" \
                                "against" "git rebase <branch>"
                fi
+
+               test "$fork_point" = auto && fork_point=t
                ;;
        *)      upstream_name="$1"
                shift
@@ -513,6 +532,15 @@ case "$#" 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") ||