rebase -i: remove unnecessary state rebase-root

Before calling 'git cherry-pick', interactive rebase currently checks
if we are rebasing from root (if --root was passed). If we are, the
'--ff' flag to 'git cherry-pick' is omitted. However, according to the
documentation for 'git cherry-pick --ff', "If the current HEAD is the
same as the parent of the cherry-picked commit, then a fast forward to
this commit will be performed.". This should never be the case when
rebasing from root, so it should not matter whether --ff is passed, so
simplify the code by removing the condition.

Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index cf19bf5ae29e27f23234693c00f97ab9da978b48..6566d319aa121fc8f89fff28d0169fd9a1723537 100755 (executable)
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -168,11 +168,6 @@ pick_one () {
        output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1"
        test -d "$rewritten" &&
                pick_one_preserving_merges "$@" && return
-       if test -n "$rebase_root"
-       then
-               output git cherry-pick "$@"
-               return
-       fi
        output git cherry-pick $ff "$@"
 }
 
@@ -582,10 +577,6 @@ skip_unnecessary_picks () {
        die "Could not skip unnecessary pick commands"
 }
 
-get_saved_options () {
-       test -f "$state_dir"/rebase-root && rebase_root=t
-}
-
 # Rearrange the todo list that has both "pick sha1 msg" and
 # "pick sha1 fixup!/squash! msg" appears in it so that the latter
 # comes immediately after the former, and change "pick" to
@@ -649,8 +640,6 @@ rearrange_squash () {
 
 case "$action" in
 continue)
-       get_saved_options
-
        # do we have anything to commit?
        if git diff-index --cached --quiet --ignore-submodules HEAD --
        then
@@ -681,8 +670,6 @@ first and then run 'git rebase --continue' again."
        do_rest
        ;;
 skip)
-       get_saved_options
-
        git rerere clear
 
        do_rest
@@ -705,12 +692,6 @@ mkdir "$state_dir" || die "Could not create temporary $state_dir"
 
 : > "$state_dir"/interactive || die "Could not mark as interactive"
 write_basic_state
-case "$rebase_root" in
-'')
-       rm -f "$state_dir"/rebase-root ;;
-*)
-       : >"$state_dir"/rebase-root ;;
-esac
 if test t = "$preserve_merges"
 then
        if test -z "$rebase_root"