There is a bug with git rebase -i --root when a fixup or squash line is
applied to the new root. We attempt to amend the commit onto which they
apply with git reset --soft HEAD^ followed by a normal commit. Unlike a
real commit --amend, this sequence will fail against a root commit as it
has no parent.
Fix rebase -i to use commit --amend for fixup and squash instead, and
add a test for the case of a fixup of the root commit.
Signed-off-by: Chris Webb <chris@xxxxxxxxxxxx>
---
Sorry, I should have spotted this issue when I did the original root-rebase
series. I've checked that this patch doesn't break any of the existing
tests, as well as satisfying the newly introduced check for the root-fixup
case.
git-rebase--interactive.sh | 25 +++++++++++++------------
t/t3404-rebase-interactive.sh | 8 ++++++++
2 files changed, 21 insertions(+), 12 deletions(-)
diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index bef7bc0..0d2056f 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -493,25 +493,28 @@ do_next () {
author_script_content=$(get_author_ident_from_commit HEAD)
echo "$author_script_content" > "$author_script"
eval "$author_script_content"
- output git reset --soft HEAD^
- pick_one -n $sha1 || die_failed_squash $sha1 "$rest"
+ if ! pick_one -n $sha1
+ then
+ git rev-parse --verify HEAD >"$amend"
+ die_failed_squash $sha1 "$rest"
+ fi
case "$(peek_next_command)" in
squash|s|fixup|f)
# This is an intermediate commit; its message will only be
# used in case of trouble. So use the long version:
- do_with_author output git commit --no-verify -F "$squash_msg" ||
+ do_with_author output git commit --amend --no-verify -F "$squash_msg" ||
die_failed_squash $sha1 "$rest"
;;
*)
# This is the final command of this squash/fixup group
if test -f "$fixup_msg"
then
- do_with_author git commit --no-verify -F "$fixup_msg" ||
+ do_with_author git commit --amend --no-verify -F "$fixup_msg" ||
die_failed_squash $sha1 "$rest"
else
cp "$squash_msg" "$GIT_DIR"/SQUASH_MSG || exit
rm -f "$GIT_DIR"/MERGE_MSG
- do_with_author git commit --no-verify -e ||
+ do_with_author git commit --amend --no-verify -F "$GIT_DIR"/SQUASH_MSG -e ||
die_failed_squash $sha1 "$rest"
fi
rm -f "$squash_msg" "$fixup_msg"
@@ -748,7 +751,6 @@ In both case, once you're done, continue with:
fi
. "$author_script" ||
die "Error trying to find the author identity to amend commit"
- current_head=
if test -f "$amend"
then
current_head=$(git rev-parse --verify HEAD)
@@ -756,13 +758,12 @@ In both case, once you're done, continue with:
die "\
You have uncommitted changes in your working tree. Please, commit them
first and then run 'git rebase --continue' again."
- git reset --soft HEAD^ ||
- die "Cannot rewind the HEAD"
+ do_with_author git commit --amend --no-verify -F "$msg" -e ||
+ die "Could not commit staged changes."
+ else
+ do_with_author git commit --no-verify -F "$msg" -e ||
+ die "Could not commit staged changes."
fi
- do_with_author git commit --no-verify -F "$msg" -e || {
- test -n "$current_head" && git reset --soft $current_head
- die "Could not commit staged changes."
- }
fi
record_in_rewritten "$(cat "$state_dir"/stopped-sha)"
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 8078db6..3f75d32 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -903,4 +903,12 @@ test_expect_success 'rebase -i --root temporary sentinel commit' '
git rebase --abort
'
+test_expect_success 'rebase -i --root fixup root commit' '
+ git checkout B &&
+ FAKE_LINES="1 fixup 2" git rebase -i --root &&
+ test A = $(git cat-file commit HEAD | sed -ne \$p) &&
+ test B = $(git show HEAD:file1) &&
+ test 0 = $(git cat-file commit HEAD | grep -c ^parent\ )
+'
+
test_done
--
1.7.11.2.251.g6a928a6
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