Merge branch 'es/worktree-repair-copied' into cw/worktrees-relative

[git/gitster.git] / t / t3404-rebase-interactive.sh

#!/bin/sh
#
# Copyright (c) 2007 Johannes E. Schindelin
#

test_description='git rebase interactive

This test runs git rebase "interactively", by faking an edit, and verifies
that the result still makes sense.

Initial setup:

     one - two - three - four (conflict-branch)
   /
 A - B - C - D - E            (primary)
 | \
 |   F - G - H                (branch1)
 |     \
 |\      I                    (branch2)
 | \
 |   J - K - L - M            (no-conflict-branch)
  \
    N - O - P                 (no-ff-branch)

 where A, B, D and G all touch file1, and one, two, three, four all
 touch file "conflict".
'

TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh

. "$TEST_DIRECTORY"/lib-rebase.sh

test_expect_success 'setup' '
        git switch -C primary &&
        test_commit A file1 &&
        test_commit B file1 &&
        test_commit C file2 &&
        test_commit D file1 &&
        test_commit E file3 &&
        git checkout -b branch1 A &&
        test_commit F file4 &&
        test_commit G file1 &&
        test_commit H file5 &&
        git checkout -b branch2 F &&
        test_commit I file6 &&
        git checkout -b conflict-branch A &&
        test_commit one conflict &&
        test_commit two conflict &&
        test_commit three conflict &&
        test_commit four conflict &&
        git checkout -b no-conflict-branch A &&
        test_commit J fileJ &&
        test_commit K fileK &&
        test_commit L fileL &&
        test_commit M fileM &&
        git checkout -b no-ff-branch A &&
        test_commit N fileN &&
        test_commit O fileO &&
        test_commit P fileP
'

# "exec" commands are run with the user shell by default, but this may
# be non-POSIX. For example, if SHELL=zsh then ">file" doesn't work
# to create a file. Unsetting SHELL avoids such non-portable behavior
# in tests. It must be exported for it to take effect where needed.
SHELL=
export SHELL

test_expect_success 'rebase --keep-empty' '
        git checkout -b emptybranch primary &&
        git commit --allow-empty -m "empty" &&
        git rebase --keep-empty -i HEAD~2 &&
        git log --oneline >actual &&
        test_line_count = 6 actual
'

test_expect_success 'rebase -i with empty todo list' '
        cat >expect <<-\EOF &&
        error: nothing to do
        EOF
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="#" \
                        git rebase -i HEAD^ >output 2>&1
        ) &&
        tail -n 1 output >actual &&  # Ignore output about changing todo list
        test_cmp expect actual
'

test_expect_success 'rebase -i with the exec command' '
        git checkout primary &&
        (
        set_fake_editor &&
        FAKE_LINES="1 exec_>touch-one
                2 exec_>touch-two exec_false exec_>touch-three
                3 4 exec_>\"touch-file__name_with_spaces\";_>touch-after-semicolon 5" &&
        export FAKE_LINES &&
        test_must_fail git rebase -i A
        ) &&
        test_path_is_file touch-one &&
        test_path_is_file touch-two &&
        # Missing because we should have stopped by now.
        test_path_is_missing touch-three &&
        test_cmp_rev C HEAD &&
        git rebase --continue &&
        test_path_is_file touch-three &&
        test_path_is_file "touch-file  name with spaces" &&
        test_path_is_file touch-after-semicolon &&
        test_cmp_rev primary HEAD &&
        rm -f touch-*
'

test_expect_success 'rebase -i with the exec command runs from tree root' '
        git checkout primary &&
        mkdir subdir && (cd subdir &&
        set_fake_editor &&
        FAKE_LINES="1 exec_>touch-subdir" \
                git rebase -i HEAD^
        ) &&
        test_path_is_file touch-subdir &&
        rm -fr subdir
'

test_expect_success 'rebase -i with exec allows git commands in subdirs' '
        test_when_finished "rm -rf subdir" &&
        test_when_finished "git rebase --abort ||:" &&
        git checkout primary &&
        mkdir subdir && (cd subdir &&
        set_fake_editor &&
        FAKE_LINES="1 x_cd_subdir_&&_git_rev-parse_--is-inside-work-tree" \
                git rebase -i HEAD^
        )
'

test_expect_success 'rebase -i sets work tree properly' '
        test_when_finished "rm -rf subdir" &&
        test_when_finished "test_might_fail git rebase --abort" &&
        mkdir subdir &&
        git rebase -x "(cd subdir && git rev-parse --show-toplevel)" HEAD^ \
                >actual &&
        ! grep "/subdir$" actual
'

test_expect_success 'rebase -i with the exec command checks tree cleanness' '
        git checkout primary &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="exec_echo_foo_>file1 1" \
                        git rebase -i HEAD^
        ) &&
        test_cmp_rev primary^ HEAD &&
        git reset --hard &&
        git rebase --continue
'

test_expect_success 'cherry-pick works with rebase --exec' '
        test_when_finished "git cherry-pick --abort; \
                            git rebase --abort; \
                            git checkout primary" &&
        echo "exec git cherry-pick G" >todo &&
        (
                set_replace_editor todo &&
                test_must_fail git rebase -i D D
        ) &&
        test_cmp_rev G CHERRY_PICK_HEAD
'

test_expect_success 'rebase -x with empty command fails' '
        test_when_finished "git rebase --abort ||:" &&
        test_must_fail env git rebase -x "" @ 2>actual &&
        test_write_lines "error: empty exec command" >expected &&
        test_cmp expected actual &&
        test_must_fail env git rebase -x " " @ 2>actual &&
        test_cmp expected actual
'

test_expect_success 'rebase -x with newline in command fails' '
        test_when_finished "git rebase --abort ||:" &&
        test_must_fail env git rebase -x "a${LF}b" @ 2>actual &&
        test_write_lines "error: exec commands cannot contain newlines" \
                         >expected &&
        test_cmp expected actual
'

test_expect_success 'rebase -i with exec of inexistent command' '
        git checkout primary &&
        test_when_finished "git rebase --abort" &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="exec_this-command-does-not-exist 1" \
                        git rebase -i HEAD^ >actual 2>&1
        ) &&
        ! grep "Maybe git-rebase is broken" actual
'

test_expect_success 'implicit interactive rebase does not invoke sequence editor' '
        test_when_finished "git rebase --abort ||:" &&
        GIT_SEQUENCE_EDITOR="echo bad >" git rebase -x"echo one" @^
'

test_expect_success 'no changes are a nop' '
        git checkout branch2 &&
        git rebase -i F &&
        test "$(git symbolic-ref -q HEAD)" = "refs/heads/branch2" &&
        test_cmp_rev I HEAD
'

test_expect_success 'test the [branch] option' '
        git checkout -b dead-end &&
        git rm file6 &&
        git commit -m "stop here" &&
        git rebase -i F branch2 &&
        test "$(git symbolic-ref -q HEAD)" = "refs/heads/branch2" &&
        test_cmp_rev I branch2 &&
        test_cmp_rev I HEAD
'

test_expect_success 'test --onto <branch>' '
        git checkout -b test-onto branch2 &&
        git rebase -i --onto branch1 F &&
        test "$(git symbolic-ref -q HEAD)" = "refs/heads/test-onto" &&
        test_cmp_rev HEAD^ branch1 &&
        test_cmp_rev I branch2
'

test_expect_success 'rebase on top of a non-conflicting commit' '
        git checkout branch1 &&
        git tag original-branch1 &&
        git rebase -i branch2 &&
        test file6 = $(git diff --name-only original-branch1) &&
        test "$(git symbolic-ref -q HEAD)" = "refs/heads/branch1" &&
        test_cmp_rev I branch2 &&
        test_cmp_rev I HEAD~2
'

test_expect_success 'reflog for the branch shows state before rebase' '
        test_cmp_rev branch1@{1} original-branch1
'

test_expect_success 'reflog for the branch shows correct finish message' '
        printf "rebase (finish): refs/heads/branch1 onto %s\n" \
                "$(git rev-parse branch2)" >expected &&
        git log -g --pretty=%gs -1 refs/heads/branch1 >actual &&
        test_cmp expected actual
'

test_expect_success 'exchange two commits' '
        (
                set_fake_editor &&
                FAKE_LINES="2 1" git rebase -i HEAD~2
        ) &&
        test H = $(git cat-file commit HEAD^ | sed -ne \$p) &&
        test G = $(git cat-file commit HEAD | sed -ne \$p) &&
        blob1=$(git rev-parse --short HEAD^:file1) &&
        blob2=$(git rev-parse --short HEAD:file1) &&
        commit=$(git rev-parse --short HEAD)
'

test_expect_success 'stop on conflicting pick' '
        cat >expect <<-EOF &&
        diff --git a/file1 b/file1
        index $blob1..$blob2 100644
        --- a/file1
        +++ b/file1
        @@ -1 +1 @@
        -A
        +G
        EOF
        cat >expect2 <<-EOF &&
        <<<<<<< HEAD
        D
        =======
        G
        >>>>>>> $commit (G)
        EOF
        git tag new-branch1 &&
        test_must_fail git rebase -i primary &&
        test "$(git rev-parse HEAD~3)" = "$(git rev-parse primary)" &&
        test_cmp expect .git/rebase-merge/patch &&
        test_cmp expect2 file1 &&
        test "$(git diff --name-status |
                sed -n -e "/^U/s/^U[^a-z]*//p")" = file1 &&
        test 4 = $(grep -v "^#" < .git/rebase-merge/done | wc -l) &&
        test 0 = $(grep -c "^[^#]" < .git/rebase-merge/git-rebase-todo)
'

test_expect_success 'show conflicted patch' '
        GIT_TRACE=1 git rebase --show-current-patch >/dev/null 2>stderr &&
        grep "show.*REBASE_HEAD" stderr &&
        # the original stopped-sha1 is abbreviated
        stopped_sha1="$(git rev-parse $(cat ".git/rebase-merge/stopped-sha"))" &&
        test "$(git rev-parse REBASE_HEAD)" = "$stopped_sha1"
'

test_expect_success 'abort' '
        git rebase --abort &&
        test_cmp_rev new-branch1 HEAD &&
        test "$(git symbolic-ref -q HEAD)" = "refs/heads/branch1" &&
        test_path_is_missing .git/rebase-merge
'

test_expect_success 'abort with error when new base cannot be checked out' '
        git rm --cached file1 &&
        git commit -m "remove file in base" &&
        test_must_fail git rebase -i primary > output 2>&1 &&
        test_grep "The following untracked working tree files would be overwritten by checkout:" \
                output &&
        test_grep "file1" output &&
        test_path_is_missing .git/rebase-merge &&
        rm file1 &&
        git reset --hard HEAD^
'

test_expect_success 'retain authorship' '
        echo A > file7 &&
        git add file7 &&
        test_tick &&
        GIT_AUTHOR_NAME="Twerp Snog" git commit -m "different author" &&
        git tag twerp &&
        git rebase -i --onto primary HEAD^ &&
        git show HEAD | grep "^Author: Twerp Snog"
'

test_expect_success 'retain authorship w/ conflicts' '
        oGIT_AUTHOR_NAME=$GIT_AUTHOR_NAME &&
        test_when_finished "GIT_AUTHOR_NAME=\$oGIT_AUTHOR_NAME" &&

        git reset --hard twerp &&
        test_commit a conflict a conflict-a &&
        git reset --hard twerp &&

        GIT_AUTHOR_NAME=AttributeMe &&
        export GIT_AUTHOR_NAME &&
        test_commit b conflict b conflict-b &&
        GIT_AUTHOR_NAME=$oGIT_AUTHOR_NAME &&

        test_must_fail git rebase -i conflict-a &&
        echo resolved >conflict &&
        git add conflict &&
        git rebase --continue &&
        test_cmp_rev conflict-a^0 HEAD^ &&
        git show >out &&
        grep AttributeMe out
'

test_expect_success 'squash' '
        git reset --hard twerp &&
        echo B > file7 &&
        test_tick &&
        GIT_AUTHOR_NAME="Nitfol" git commit -m "nitfol" file7 &&
        echo "******************************" &&
        (
                set_fake_editor &&
                FAKE_LINES="1 squash 2" EXPECT_HEADER_COUNT=2 \
                        git rebase -i --onto primary HEAD~2
        ) &&
        test B = $(cat file7) &&
        test_cmp_rev HEAD^ primary
'

test_expect_success 'retain authorship when squashing' '
        git show HEAD | grep "^Author: Twerp Snog"
'

test_expect_success '--continue tries to commit' '
        git reset --hard D &&
        test_tick &&
        (
                set_fake_editor &&
                test_must_fail git rebase -i --onto new-branch1 HEAD^ &&
                echo resolved > file1 &&
                git add file1 &&
                FAKE_COMMIT_MESSAGE="chouette!" git rebase --continue
        ) &&
        test_cmp_rev HEAD^ new-branch1 &&
        git show HEAD | grep chouette
'

test_expect_success 'verbose flag is heeded, even after --continue' '
        git reset --hard primary@{1} &&
        test_tick &&
        test_must_fail git rebase -v -i --onto new-branch1 HEAD^ &&
        echo resolved > file1 &&
        git add file1 &&
        git rebase --continue > output &&
        grep "^ file1 | 2 +-$" output
'

test_expect_success 'multi-squash only fires up editor once' '
        base=$(git rev-parse HEAD~4) &&
        (
                set_fake_editor &&
                FAKE_COMMIT_AMEND="ONCE" \
                        FAKE_LINES="1 squash 2 squash 3 squash 4" \
                        EXPECT_HEADER_COUNT=4 \
                        git rebase -i $base
        ) &&
        test $base = $(git rev-parse HEAD^) &&
        test 1 = $(git show | grep ONCE | wc -l)
'

test_expect_success 'multi-fixup does not fire up editor' '
        git checkout -b multi-fixup E &&
        base=$(git rev-parse HEAD~4) &&
        (
                set_fake_editor &&
                FAKE_COMMIT_AMEND="NEVER" \
                        FAKE_LINES="1 fixup 2 fixup 3 fixup 4" \
                        git rebase -i $base
        ) &&
        test $base = $(git rev-parse HEAD^) &&
        test 0 = $(git show | grep NEVER | wc -l) &&
        git checkout @{-1} &&
        git branch -D multi-fixup
'

test_expect_success 'commit message used after conflict' '
        git checkout -b conflict-fixup conflict-branch &&
        base=$(git rev-parse HEAD~4) &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="1 fixup 3 fixup 4" \
                        git rebase -i $base &&
                echo three > conflict &&
                git add conflict &&
                FAKE_COMMIT_AMEND="ONCE" EXPECT_HEADER_COUNT=2 \
                        git rebase --continue
        ) &&
        test $base = $(git rev-parse HEAD^) &&
        test 1 = $(git show | grep ONCE | wc -l) &&
        git checkout @{-1} &&
        git branch -D conflict-fixup
'

test_expect_success 'commit message retained after conflict' '
        git checkout -b conflict-squash conflict-branch &&
        base=$(git rev-parse HEAD~4) &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="1 fixup 3 squash 4" \
                        git rebase -i $base &&
                echo three > conflict &&
                git add conflict &&
                FAKE_COMMIT_AMEND="TWICE" EXPECT_HEADER_COUNT=2 \
                        git rebase --continue
        ) &&
        test $base = $(git rev-parse HEAD^) &&
        test 2 = $(git show | grep TWICE | wc -l) &&
        git checkout @{-1} &&
        git branch -D conflict-squash
'

test_expect_success 'squash and fixup generate correct log messages' '
        cat >expect-squash-fixup <<-\EOF &&
        B

        D

        ONCE
        EOF
        git checkout -b squash-fixup E &&
        base=$(git rev-parse HEAD~4) &&
        (
                set_fake_editor &&
                FAKE_COMMIT_AMEND="ONCE" \
                        FAKE_LINES="1 fixup 2 squash 3 fixup 4" \
                        EXPECT_HEADER_COUNT=4 \
                        git rebase -i $base
        ) &&
        git cat-file commit HEAD | sed -e 1,/^\$/d > actual-squash-fixup &&
        test_cmp expect-squash-fixup actual-squash-fixup &&
        git cat-file commit HEAD@{2} |
                grep "^# This is a combination of 3 commits\."  &&
        git cat-file commit HEAD@{3} |
                grep "^# This is a combination of 2 commits\."  &&
        git checkout @{-1} &&
        git branch -D squash-fixup
'

test_expect_success 'squash ignores comments' '
        git checkout -b skip-comments E &&
        base=$(git rev-parse HEAD~4) &&
        (
                set_fake_editor &&
                FAKE_COMMIT_AMEND="ONCE" \
                        FAKE_LINES="# 1 # squash 2 # squash 3 # squash 4 #" \
                        EXPECT_HEADER_COUNT=4 \
                        git rebase -i $base
        ) &&
        test $base = $(git rev-parse HEAD^) &&
        test 1 = $(git show | grep ONCE | wc -l) &&
        git checkout @{-1} &&
        git branch -D skip-comments
'

test_expect_success 'squash ignores blank lines' '
        git checkout -b skip-blank-lines E &&
        base=$(git rev-parse HEAD~4) &&
        (
                set_fake_editor &&
                FAKE_COMMIT_AMEND="ONCE" \
                        FAKE_LINES="> 1 > squash 2 > squash 3 > squash 4 >" \
                        EXPECT_HEADER_COUNT=4 \
                        git rebase -i $base
        ) &&
        test $base = $(git rev-parse HEAD^) &&
        test 1 = $(git show | grep ONCE | wc -l) &&
        git checkout @{-1} &&
        git branch -D skip-blank-lines
'

test_expect_success 'squash works as expected' '
        git checkout -b squash-works no-conflict-branch &&
        one=$(git rev-parse HEAD~3) &&
        (
                set_fake_editor &&
                FAKE_LINES="1 s 3 2" EXPECT_HEADER_COUNT=2 git rebase -i HEAD~3
        ) &&
        test $one = $(git rev-parse HEAD~2)
'

test_expect_success 'interrupted squash works as expected' '
        git checkout -b interrupted-squash conflict-branch &&
        one=$(git rev-parse HEAD~3) &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="1 squash 3 2" \
                        git rebase -i HEAD~3
        ) &&
        test_write_lines one two four > conflict &&
        git add conflict &&
        test_must_fail git rebase --continue &&
        echo resolved > conflict &&
        git add conflict &&
        git rebase --continue &&
        test $one = $(git rev-parse HEAD~2)
'

test_expect_success 'interrupted squash works as expected (case 2)' '
        git checkout -b interrupted-squash2 conflict-branch &&
        one=$(git rev-parse HEAD~3) &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="3 squash 1 2" \
                        git rebase -i HEAD~3
        ) &&
        test_write_lines one four > conflict &&
        git add conflict &&
        test_must_fail git rebase --continue &&
        test_write_lines one two four > conflict &&
        git add conflict &&
        test_must_fail git rebase --continue &&
        echo resolved > conflict &&
        git add conflict &&
        git rebase --continue &&
        test $one = $(git rev-parse HEAD~2)
'

test_expect_success '--continue tries to commit, even for "edit"' '
        echo unrelated > file7 &&
        git add file7 &&
        test_tick &&
        git commit -m "unrelated change" &&
        parent=$(git rev-parse HEAD^) &&
        test_tick &&
        (
                set_fake_editor &&
                FAKE_LINES="edit 1" git rebase -i HEAD^ &&
                echo edited > file7 &&
                git add file7 &&
                FAKE_COMMIT_MESSAGE="chouette!" git rebase --continue
        ) &&
        test edited = $(git show HEAD:file7) &&
        git show HEAD | grep chouette &&
        test $parent = $(git rev-parse HEAD^)
'

test_expect_success 'aborted --continue does not squash commits after "edit"' '
        old=$(git rev-parse HEAD) &&
        test_tick &&
        (
                set_fake_editor &&
                FAKE_LINES="edit 1" git rebase -i HEAD^ &&
                echo "edited again" > file7 &&
                git add file7 &&
                test_must_fail env FAKE_COMMIT_MESSAGE=" " git rebase --continue
        ) &&
        test $old = $(git rev-parse HEAD) &&
        git rebase --abort
'

test_expect_success 'auto-amend only edited commits after "edit"' '
        test_tick &&
        (
                set_fake_editor &&
                FAKE_LINES="edit 1" git rebase -i HEAD^ &&
                echo "edited again" > file7 &&
                git add file7 &&
                FAKE_COMMIT_MESSAGE="edited file7 again" git commit &&
                echo "and again" > file7 &&
                git add file7 &&
                test_tick &&
                test_must_fail env FAKE_COMMIT_MESSAGE="and again" \
                        git rebase --continue
        ) &&
        git rebase --abort
'

test_expect_success 'clean error after failed "exec"' '
        test_tick &&
        test_when_finished "git rebase --abort || :" &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="1 exec_false" git rebase -i HEAD^
        ) &&
        echo "edited again" > file7 &&
        git add file7 &&
        test_must_fail git rebase --continue 2>error &&
        test_grep "you have staged changes in your working tree" error &&
        test_grep ! "could not open.*for reading" error
'

test_expect_success 'rebase a detached HEAD' '
        grandparent=$(git rev-parse HEAD~2) &&
        git checkout $(git rev-parse HEAD) &&
        test_tick &&
        (
                set_fake_editor &&
                FAKE_LINES="2 1" git rebase -i HEAD~2
        ) &&
        test $grandparent = $(git rev-parse HEAD~2)
'

test_expect_success 'rebase a commit violating pre-commit' '
        test_hook pre-commit <<-\EOF &&
        test -z "$(git diff --cached --check)"
        EOF
        echo "monde! " >> file1 &&
        test_tick &&
        test_must_fail git commit -m doesnt-verify file1 &&
        git commit -m doesnt-verify --no-verify file1 &&
        test_tick &&
        (
                set_fake_editor &&
                FAKE_LINES=2 git rebase -i HEAD~2
        )
'

test_expect_success 'rebase with a file named HEAD in worktree' '
        git reset --hard &&
        git checkout -b branch3 A &&

        (
                GIT_AUTHOR_NAME="Squashed Away" &&
                export GIT_AUTHOR_NAME &&
                >HEAD &&
                git add HEAD &&
                git commit -m "Add head" &&
                >BODY &&
                git add BODY &&
                git commit -m "Add body"
        ) &&

        (
                set_fake_editor &&
                FAKE_LINES="1 squash 2" git rebase -i @{-1}
        ) &&
        test "$(git show -s --pretty=format:%an)" = "Squashed Away"

'

test_expect_success 'do "noop" when there is nothing to cherry-pick' '

        git checkout -b branch4 HEAD &&
        GIT_EDITOR=: git commit --amend \
                --author="Somebody else <somebody@else.com>" &&
        test $(git rev-parse branch3) != $(git rev-parse branch4) &&
        git rebase -i branch3 &&
        test_cmp_rev branch3 branch4

'

test_expect_success 'submodule rebase setup' '
        git checkout A &&
        mkdir sub &&
        (
                cd sub && git init && >elif &&
                git add elif && git commit -m "submodule initial"
        ) &&
        echo 1 >file1 &&
        git add file1 sub &&
        test_tick &&
        git commit -m "One" &&
        echo 2 >file1 &&
        test_tick &&
        git commit -a -m "Two" &&
        (
                cd sub && echo 3 >elif &&
                git commit -a -m "submodule second"
        ) &&
        test_tick &&
        git commit -a -m "Three changes submodule"
'

test_expect_success 'submodule rebase -i' '
        (
                set_fake_editor &&
                FAKE_LINES="1 squash 2 3" git rebase -i A
        )
'

test_expect_success 'submodule conflict setup' '
        git tag submodule-base &&
        git checkout HEAD^ &&
        (
                cd sub && git checkout HEAD^ && echo 4 >elif &&
                git add elif && git commit -m "submodule conflict"
        ) &&
        git add sub &&
        test_tick &&
        git commit -m "Conflict in submodule" &&
        git tag submodule-topic
'

test_expect_success 'rebase -i continue with only submodule staged' '
        test_must_fail git rebase -i submodule-base &&
        git add sub &&
        git rebase --continue &&
        test $(git rev-parse submodule-base) != $(git rev-parse HEAD)
'

test_expect_success 'rebase -i continue with unstaged submodule' '
        git checkout submodule-topic &&
        git reset --hard &&
        test_must_fail git rebase -i submodule-base &&
        git reset &&
        git rebase --continue &&
        test_cmp_rev submodule-base HEAD
'

test_expect_success 'avoid unnecessary reset' '
        git checkout primary &&
        git reset --hard &&
        test-tool chmtime =123456789 file3 &&
        git update-index --refresh &&
        HEAD=$(git rev-parse HEAD) &&
        git rebase -i HEAD~4 &&
        test $HEAD = $(git rev-parse HEAD) &&
        MTIME=$(test-tool chmtime --get file3) &&
        test 123456789 = $MTIME
'

test_expect_success 'reword' '
        git checkout -b reword-branch primary &&
        (
                set_fake_editor &&
                FAKE_LINES="1 2 3 reword 4" FAKE_COMMIT_MESSAGE="E changed" \
                        git rebase -i A &&
                git show HEAD | grep "E changed" &&
                test $(git rev-parse primary) != $(git rev-parse HEAD) &&
                test_cmp_rev primary^ HEAD^ &&
                FAKE_LINES="1 2 reword 3 4" FAKE_COMMIT_MESSAGE="D changed" \
                        git rebase -i A &&
                git show HEAD^ | grep "D changed" &&
                FAKE_LINES="reword 1 2 3 4" FAKE_COMMIT_MESSAGE="B changed" \
                        git rebase -i A &&
                git show HEAD~3 | grep "B changed" &&
                FAKE_LINES="1 r 2 pick 3 p 4" FAKE_COMMIT_MESSAGE="C changed" \
                        git rebase -i A
        ) &&
        git show HEAD~2 | grep "C changed"
'

test_expect_success 'no uncommitted changes when rewording and the todo list is reloaded' '
        git checkout E &&
        test_when_finished "git checkout @{-1}" &&
        (
                set_fake_editor &&
                GIT_SEQUENCE_EDITOR="\"$PWD/fake-editor.sh\"" &&
                export GIT_SEQUENCE_EDITOR &&
                set_reword_editor &&
                FAKE_LINES="reword 1 reword 2" git rebase -i C
        ) &&
        check_reworded_commits D E
'

test_expect_success 'rebase -i can copy notes' '
        git config notes.rewrite.rebase true &&
        git config notes.rewriteRef "refs/notes/*" &&
        test_commit n1 &&
        test_commit n2 &&
        test_commit n3 &&
        git notes add -m"a note" n3 &&
        git rebase -i --onto n1 n2 &&
        test "a note" = "$(git notes show HEAD)"
'

test_expect_success 'rebase -i can copy notes over a fixup' '
        cat >expect <<-\EOF &&
        an earlier note

        a note
        EOF
        git reset --hard n3 &&
        git notes add -m"an earlier note" n2 &&
        (
                set_fake_editor &&
                GIT_NOTES_REWRITE_MODE=concatenate FAKE_LINES="1 f 2" \
                        git rebase -i n1
        ) &&
        git notes show > output &&
        test_cmp expect output
'

test_expect_success 'rebase while detaching HEAD' '
        git symbolic-ref HEAD &&
        grandparent=$(git rev-parse HEAD~2) &&
        test_tick &&
        (
                set_fake_editor &&
                FAKE_LINES="2 1" git rebase -i HEAD~2 HEAD^0
        ) &&
        test $grandparent = $(git rev-parse HEAD~2) &&
        test_must_fail git symbolic-ref HEAD
'

test_tick # Ensure that the rebased commits get a different timestamp.
test_expect_success 'always cherry-pick with --no-ff' '
        git checkout no-ff-branch &&
        git tag original-no-ff-branch &&
        git rebase -i --no-ff A &&
        for p in 0 1 2
        do
                test ! $(git rev-parse HEAD~$p) = $(git rev-parse original-no-ff-branch~$p) &&
                git diff HEAD~$p original-no-ff-branch~$p > out &&
                test_must_be_empty out || return 1
        done &&
        test_cmp_rev HEAD~3 original-no-ff-branch~3 &&
        git diff HEAD~3 original-no-ff-branch~3 > out &&
        test_must_be_empty out
'

test_expect_success 'set up commits with funny messages' '
        git checkout -b funny A &&
        echo >>file1 &&
        test_tick &&
        git commit -a -m "end with slash\\" &&
        echo >>file1 &&
        test_tick &&
        git commit -a -m "something (\000) that looks like octal" &&
        echo >>file1 &&
        test_tick &&
        git commit -a -m "something (\n) that looks like a newline" &&
        echo >>file1 &&
        test_tick &&
        git commit -a -m "another commit"
'

test_expect_success 'rebase-i history with funny messages' '
        git rev-list A..funny >expect &&
        test_tick &&
        (
                set_fake_editor &&
                FAKE_LINES="1 2 3 4" git rebase -i A
        ) &&
        git rev-list A.. >actual &&
        test_cmp expect actual
'

test_expect_success 'prepare for rebase -i --exec' '
        git checkout primary &&
        git checkout -b execute &&
        test_commit one_exec main.txt one_exec &&
        test_commit two_exec main.txt two_exec &&
        test_commit three_exec main.txt three_exec
'

test_expect_success 'running "git rebase -i --exec git show HEAD"' '
        (
                set_fake_editor &&
                git rebase -i --exec "git show HEAD" HEAD~2 >actual &&
                FAKE_LINES="1 exec_git_show_HEAD 2 exec_git_show_HEAD" &&
                export FAKE_LINES &&
                git rebase -i HEAD~2 >expect
        ) &&
        sed -e "1,9d" expect >expected &&
        test_cmp expected actual
'

test_expect_success 'running "git rebase --exec git show HEAD -i"' '
        git reset --hard execute &&
        (
                set_fake_editor &&
                git rebase --exec "git show HEAD" -i HEAD~2 >actual &&
                FAKE_LINES="1 exec_git_show_HEAD 2 exec_git_show_HEAD" &&
                export FAKE_LINES &&
                git rebase -i HEAD~2 >expect
        ) &&
        sed -e "1,9d" expect >expected &&
        test_cmp expected actual
'

test_expect_success 'running "git rebase -ix git show HEAD"' '
        git reset --hard execute &&
        (
                set_fake_editor &&
                git rebase -ix "git show HEAD" HEAD~2 >actual &&
                FAKE_LINES="1 exec_git_show_HEAD 2 exec_git_show_HEAD" &&
                export FAKE_LINES &&
                git rebase -i HEAD~2 >expect
        ) &&
        sed -e "1,9d" expect >expected &&
        test_cmp expected actual
'


test_expect_success 'rebase -ix with several <CMD>' '
        git reset --hard execute &&
        (
                set_fake_editor &&
                git rebase -ix "git show HEAD; pwd" HEAD~2 >actual &&
                FAKE_LINES="1 exec_git_show_HEAD;_pwd 2 exec_git_show_HEAD;_pwd" &&
                export FAKE_LINES &&
                git rebase -i HEAD~2 >expect
        ) &&
        sed -e "1,9d" expect >expected &&
        test_cmp expected actual
'

test_expect_success 'rebase -ix with several instances of --exec' '
        git reset --hard execute &&
        (
                set_fake_editor &&
                git rebase -i --exec "git show HEAD" --exec "pwd" HEAD~2 >actual &&
                FAKE_LINES="1 exec_git_show_HEAD exec_pwd 2
                                exec_git_show_HEAD exec_pwd" &&
                export FAKE_LINES &&
                git rebase -i HEAD~2 >expect
        ) &&
        sed -e "1,11d" expect >expected &&
        test_cmp expected actual
'

test_expect_success 'rebase -ix with --autosquash' '
        git reset --hard execute &&
        git checkout -b autosquash &&
        echo second >second.txt &&
        git add second.txt &&
        git commit -m "fixup! two_exec" &&
        echo bis >bis.txt &&
        git add bis.txt &&
        git commit -m "fixup! two_exec" &&
        git checkout -b autosquash_actual &&
        git rebase -i --exec "git show HEAD" --autosquash HEAD~4 >actual &&
        git checkout autosquash &&
        (
                set_fake_editor &&
                git checkout -b autosquash_expected &&
                FAKE_LINES="1 fixup 3 fixup 4 exec_git_show_HEAD 2 exec_git_show_HEAD" &&
                export FAKE_LINES &&
                git rebase -i HEAD~4 >expect
        ) &&
        sed -e "1,13d" expect >expected &&
        test_cmp expected actual
'

test_expect_success 'rebase --exec works without -i ' '
        git reset --hard execute &&
        rm -rf exec_output &&
        EDITOR="echo >invoked_editor" git rebase --exec "echo a line >>exec_output"  HEAD~2 2>actual &&
        test_grep  "Successfully rebased and updated" actual &&
        test_line_count = 2 exec_output &&
        test_path_is_missing invoked_editor
'

test_expect_success 'rebase -i --exec without <CMD>' '
        git reset --hard execute &&
        test_must_fail git rebase -i --exec 2>actual &&
        test_grep "requires a value" actual &&
        git checkout primary
'

test_expect_success 'rebase -i --root re-order and drop commits' '
        git checkout E &&
        (
                set_fake_editor &&
                FAKE_LINES="3 1 2 5" git rebase -i --root
        ) &&
        test E = $(git cat-file commit HEAD | sed -ne \$p) &&
        test B = $(git cat-file commit HEAD^ | sed -ne \$p) &&
        test A = $(git cat-file commit HEAD^^ | sed -ne \$p) &&
        test C = $(git cat-file commit HEAD^^^ | sed -ne \$p) &&
        test 0 = $(git cat-file commit HEAD^^^ | grep -c ^parent\ )
'

test_expect_success 'rebase -i --root retain root commit author and message' '
        git checkout A &&
        echo B >file7 &&
        git add file7 &&
        GIT_AUTHOR_NAME="Twerp Snog" git commit -m "different author" &&
        (
                set_fake_editor &&
                FAKE_LINES="2" git rebase -i --root
        ) &&
        git cat-file commit HEAD | grep -q "^author Twerp Snog" &&
        git cat-file commit HEAD | grep -q "^different author$"
'

test_expect_success 'rebase -i --root temporary sentinel commit' '
        git checkout B &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="2" git rebase -i --root
        ) &&
        git cat-file commit HEAD | grep "^tree $EMPTY_TREE" &&
        git rebase --abort
'

test_expect_success 'rebase -i --root fixup root commit' '
        git checkout B &&
        (
                set_fake_editor &&
                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_expect_success 'rebase -i --root reword original root commit' '
        test_when_finished "test_might_fail git rebase --abort" &&
        git checkout -b reword-original-root-branch primary &&
        (
                set_fake_editor &&
                FAKE_LINES="reword 1 2" FAKE_COMMIT_MESSAGE="A changed" \
                        git rebase -i --root
        ) &&
        git show HEAD^ | grep "A changed" &&
        test -z "$(git show -s --format=%p HEAD^)"
'

test_expect_success 'rebase -i --root reword new root commit' '
        test_when_finished "test_might_fail git rebase --abort" &&
        git checkout -b reword-now-root-branch primary &&
        (
                set_fake_editor &&
                FAKE_LINES="reword 3 1" FAKE_COMMIT_MESSAGE="C changed" \
                git rebase -i --root
        ) &&
        git show HEAD^ | grep "C changed" &&
        test -z "$(git show -s --format=%p HEAD^)"
'

test_expect_success 'rebase -i --root when root has untracked file conflict' '
        test_when_finished "reset_rebase" &&
        git checkout -b failing-root-pick A &&
        echo x >file2 &&
        git rm file1 &&
        git commit -m "remove file 1 add file 2" &&
        echo z >file1 &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="1 2" git rebase -i --root
        ) &&
        rm file1 &&
        git rebase --continue &&
        test "$(git log -1 --format=%B)" = "remove file 1 add file 2" &&
        test "$(git rev-list --count HEAD)" = 2
'

test_expect_success 'rebase -i --root reword root when root has untracked file conflict' '
        test_when_finished "reset_rebase" &&
        echo z>file1 &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="reword 1 2" \
                        FAKE_COMMIT_MESSAGE="Modified A" git rebase -i --root &&
                rm file1 &&
                FAKE_COMMIT_MESSAGE="Reworded A" git rebase --continue
        ) &&
        test "$(git log -1 --format=%B HEAD^)" = "Reworded A" &&
        test "$(git rev-list --count HEAD)" = 2
'

test_expect_success 'rebase --edit-todo does not work on non-interactive rebase' '
        git checkout reword-original-root-branch &&
        git reset --hard &&
        git checkout conflict-branch &&
        (
                set_fake_editor &&
                test_must_fail git rebase -f --apply --onto HEAD~2 HEAD~ &&
                test_must_fail git rebase --edit-todo
        ) &&
        git rebase --abort
'

test_expect_success 'rebase --edit-todo can be used to modify todo' '
        git reset --hard &&
        git checkout no-conflict-branch^0 &&
        (
                set_fake_editor &&
                FAKE_LINES="edit 1 2 3" git rebase -i HEAD~3 &&
                FAKE_LINES="2 1" git rebase --edit-todo &&
                git rebase --continue
        ) &&
        test M = $(git cat-file commit HEAD^ | sed -ne \$p) &&
        test L = $(git cat-file commit HEAD | sed -ne \$p)
'

test_expect_success 'rebase -i produces readable reflog' '
        git reset --hard &&
        git branch -f branch-reflog-test H &&
        git rebase -i --onto I F branch-reflog-test &&
        cat >expect <<-\EOF &&
        rebase (finish): returning to refs/heads/branch-reflog-test
        rebase (pick): H
        rebase (pick): G
        rebase (start): checkout I
        EOF
        git reflog -n4 HEAD |
        sed "s/[^:]*: //" >actual &&
        test_cmp expect actual
'

test_expect_success 'rebase -i respects core.commentchar' '
        git reset --hard &&
        git checkout E^0 &&
        test_config core.commentchar "\\" &&
        write_script remove-all-but-first.sh <<-\EOF &&
        sed -e "2,\$s/^/\\\\/" "$1" >"$1.tmp" &&
        mv "$1.tmp" "$1"
        EOF
        (
                test_set_editor "$(pwd)/remove-all-but-first.sh" &&
                git rebase -i B
        ) &&
        test B = $(git cat-file commit HEAD^ | sed -ne \$p)
'

test_expect_success 'rebase -i respects core.commentchar=auto' '
        test_config core.commentchar auto &&
        write_script copy-edit-script.sh <<-\EOF &&
        cp "$1" edit-script
        EOF
        test_when_finished "git rebase --abort || :" &&
        (
                test_set_editor "$(pwd)/copy-edit-script.sh" &&
                git rebase -i HEAD^
        ) &&
        test -z "$(grep -ve "^#" -e "^\$" -e "^pick" edit-script)"
'

test_expect_success 'rebase -i, with <onto> and <upstream> specified as :/quuxery' '
        test_when_finished "git branch -D torebase" &&
        git checkout -b torebase branch1 &&
        upstream=$(git rev-parse ":/J") &&
        onto=$(git rev-parse ":/A") &&
        git rebase --onto $onto $upstream &&
        git reset --hard branch1 &&
        git rebase --onto ":/A" ":/J" &&
        git checkout branch1
'

test_expect_success 'rebase -i with --strategy and -X' '
        git checkout -b conflict-merge-use-theirs conflict-branch &&
        git reset --hard HEAD^ &&
        echo five >conflict &&
        echo Z >file1 &&
        git commit -a -m "one file conflict" &&
        EDITOR=true git rebase -i --strategy=recursive -Xours conflict-branch &&
        test $(git show conflict-branch:conflict) = $(cat conflict) &&
        test $(cat file1) = Z
'

test_expect_success 'interrupted rebase -i with --strategy and -X' '
        git checkout -b conflict-merge-use-theirs-interrupted conflict-branch &&
        git reset --hard HEAD^ &&
        >breakpoint &&
        git add breakpoint &&
        git commit -m "breakpoint for interactive mode" &&
        echo five >conflict &&
        echo Z >file1 &&
        git commit -a -m "one file conflict" &&
        (
                set_fake_editor &&
                FAKE_LINES="edit 1 2" git rebase -i --strategy=recursive \
                        -Xours conflict-branch
        ) &&
        git rebase --continue &&
        test $(git show conflict-branch:conflict) = $(cat conflict) &&
        test $(cat file1) = Z
'

test_expect_success 'rebase -i error on commits with \ in message' '
        current_head=$(git rev-parse HEAD) &&
        test_when_finished "git rebase --abort; git reset --hard $current_head; rm -f error" &&
        test_commit TO-REMOVE will-conflict old-content &&
        test_commit "\temp" will-conflict new-content dummy &&
        test_must_fail env EDITOR=true git rebase -i HEAD^ --onto HEAD^^ 2>error &&
        test_expect_code 1 grep  "      emp" error
'

test_expect_success 'short commit ID setup' '
        test_when_finished "git checkout primary" &&
        git checkout --orphan collide &&
        git rm -rf . &&
        (
        unset test_tick &&
        test_commit collide1 collide &&
        test_commit --notick collide2 collide &&
        test_commit --notick collide3 collide
        )
'

if test -n "$GIT_TEST_FIND_COLLIDER"
then
        author="$(unset test_tick; test_tick; git var GIT_AUTHOR_IDENT)"
        committer="$(unset test_tick; test_tick; git var GIT_COMMITTER_IDENT)"
        blob="$(git rev-parse collide2:collide)"
        from="$(git rev-parse collide1^0)"
        repl="commit refs/heads/collider-&\\n"
        repl="${repl}author $author\\ncommitter $committer\\n"
        repl="${repl}data <<EOF\\ncollide2 &\\nEOF\\n"
        repl="${repl}from $from\\nM 100644 $blob collide\\n"
        test_seq 1 32768 | sed "s|.*|$repl|" >script &&
        git fast-import <script &&
        git pack-refs &&
        git for-each-ref >refs &&
        grep "^$(test_oid t3404_collision)" <refs >matches &&
        cat matches &&
        test_line_count -gt 2 matches || {
                echo "Could not find a collider" >&2
                exit 1
        }
fi

test_expect_success 'short commit ID collide' '
        test_oid_cache <<-EOF &&
        # collision-related constants
        t3404_collision sha1:6bcd
        t3404_collision sha256:0161
        t3404_collider  sha1:ac4f2ee
        t3404_collider  sha256:16697
        EOF
        test_when_finished "reset_rebase && git checkout primary" &&
        git checkout collide &&
        colliding_id=$(test_oid t3404_collision) &&
        hexsz=$(test_oid hexsz) &&
        test $colliding_id = "$(git rev-parse HEAD | cut -c 1-4)" &&
        test_config core.abbrev 4 &&
        (
                unset test_tick &&
                test_tick &&
                set_fake_editor &&
                FAKE_COMMIT_MESSAGE="collide2 $(test_oid t3404_collider)" \
                FAKE_LINES="reword 1 break 2" git rebase -i HEAD~2 &&
                test $colliding_id = "$(git rev-parse HEAD | cut -c 1-4)" &&
                grep "^pick $colliding_id " \
                        .git/rebase-merge/git-rebase-todo.tmp &&
                grep -E "^pick [0-9a-f]{$hexsz}" \
                        .git/rebase-merge/git-rebase-todo &&
                grep -E "^pick [0-9a-f]{$hexsz}" \
                        .git/rebase-merge/git-rebase-todo.backup &&
                git rebase --continue
        ) &&
        collide2="$(git rev-parse HEAD~1 | cut -c 1-4)" &&
        collide3="$(git rev-parse collide3 | cut -c 1-4)" &&
        test "$collide2" = "$collide3"
'

test_expect_success 'respect core.abbrev' '
        git config core.abbrev 12 &&
        (
                set_cat_todo_editor &&
                test_must_fail git rebase -i HEAD~4 >todo-list
        ) &&
        test 4 = $(grep -c -E "pick [0-9a-f]{12,}" todo-list)
'

test_expect_success 'todo count' '
        write_script dump-raw.sh <<-\EOF &&
                cat "$1"
        EOF
        (
                test_set_editor "$(pwd)/dump-raw.sh" &&
                git rebase -i HEAD~4 >actual
        ) &&
        test_grep "^# Rebase ..* onto ..* ([0-9]" actual
'

test_expect_success 'rebase -i commits that overwrite untracked files (pick)' '
        git checkout --force A &&
        git clean -f &&
        cat >todo <<-EOF &&
        exec >file2
        pick $(git rev-parse B) B
        pick $(git rev-parse C) C
        pick $(git rev-parse D) D
        exec cat .git/rebase-merge/done >actual
        EOF
        (
                set_replace_editor todo &&
                test_must_fail git rebase -i A
        ) &&
        test_cmp_rev HEAD B &&
        test_cmp_rev REBASE_HEAD C &&
        head -n3 todo >expect &&
        test_cmp expect .git/rebase-merge/done &&
        rm file2 &&
        test_path_is_missing .git/rebase-merge/patch &&
        echo changed >file1 &&
        git add file1 &&
        test_must_fail git rebase --continue 2>err &&
        grep "error: you have staged changes in your working tree" err &&
        git reset --hard HEAD &&
        git rebase --continue &&
        test_cmp_rev HEAD D &&
        tail -n3 todo >>expect &&
        test_cmp expect actual
'

test_expect_success 'rebase -i commits that overwrite untracked files (squash)' '
        git checkout --force branch2 &&
        git clean -f &&
        git tag original-branch2 &&
        (
                set_fake_editor &&
                FAKE_LINES="edit 1 squash 2" git rebase -i A
        ) &&
        test_cmp_rev HEAD F &&
        test_path_is_missing file6 &&
        >file6 &&
        test_must_fail git rebase --continue &&
        test_cmp_rev HEAD F &&
        test_cmp_rev REBASE_HEAD I &&
        rm file6 &&
        test_path_is_missing .git/rebase-merge/patch &&
        echo changed >file1 &&
        git add file1 &&
        test_must_fail git rebase --continue 2>err &&
        grep "error: you have staged changes in your working tree" err &&
        git reset --hard HEAD &&
        git rebase --continue &&
        test $(git cat-file commit HEAD | sed -ne \$p) = I &&
        git reset --hard original-branch2
'

test_expect_success 'rebase -i commits that overwrite untracked files (no ff)' '
        git checkout --force branch2 &&
        git clean -f &&
        (
                set_fake_editor &&
                FAKE_LINES="edit 1 2" git rebase -i --no-ff A
        ) &&
        test $(git cat-file commit HEAD | sed -ne \$p) = F &&
        test_path_is_missing file6 &&
        >file6 &&
        test_must_fail git rebase --continue &&
        test $(git cat-file commit HEAD | sed -ne \$p) = F &&
        test_cmp_rev REBASE_HEAD I &&
        rm file6 &&
        test_path_is_missing .git/rebase-merge/patch &&
        echo changed >file1 &&
        git add file1 &&
        test_must_fail git rebase --continue 2>err &&
        grep "error: you have staged changes in your working tree" err &&
        git reset --hard HEAD &&
        git rebase --continue &&
        test $(git cat-file commit HEAD | sed -ne \$p) = I
'

test_expect_success 'rebase --continue removes CHERRY_PICK_HEAD' '
        git checkout -b commit-to-skip &&
        for double in X 3 1
        do
                test_seq 5 | sed "s/$double/&&/" >seq &&
                git add seq &&
                test_tick &&
                git commit -m seq-$double || return 1
        done &&
        git tag seq-onto &&
        git reset --hard HEAD~2 &&
        git cherry-pick seq-onto &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES= git rebase -i seq-onto
        ) &&
        test -d .git/rebase-merge &&
        git rebase --continue &&
        git diff --exit-code seq-onto &&
        test ! -d .git/rebase-merge &&
        test ! -f .git/CHERRY_PICK_HEAD
'

rebase_setup_and_clean () {
        test_when_finished "
                git checkout primary &&
                test_might_fail git branch -D $1 &&
                test_might_fail git rebase --abort
        " &&
        git checkout -b $1 ${2:-primary}
}

test_expect_success 'drop' '
        rebase_setup_and_clean drop-test &&
        (
                set_fake_editor &&
                FAKE_LINES="1 drop 2 3 d 4 5" git rebase -i --root
        ) &&
        test E = $(git cat-file commit HEAD | sed -ne \$p) &&
        test C = $(git cat-file commit HEAD^ | sed -ne \$p) &&
        test A = $(git cat-file commit HEAD^^ | sed -ne \$p)
'

test_expect_success 'rebase -i respects rebase.missingCommitsCheck = ignore' '
        test_config rebase.missingCommitsCheck ignore &&
        rebase_setup_and_clean missing-commit &&
        (
                set_fake_editor &&
                FAKE_LINES="1 2 3 4" git rebase -i --root 2>actual
        ) &&
        test D = $(git cat-file commit HEAD | sed -ne \$p) &&
        test_grep \
                "Successfully rebased and updated refs/heads/missing-commit" \
                actual
'

test_expect_success 'rebase -i respects rebase.missingCommitsCheck = warn' '
        cat >expect <<-EOF &&
        Warning: some commits may have been dropped accidentally.
        Dropped commits (newer to older):
         - $(git rev-list --pretty=oneline --abbrev-commit -1 primary)
        To avoid this message, use "drop" to explicitly remove a commit.
        EOF
        test_config rebase.missingCommitsCheck warn &&
        rebase_setup_and_clean missing-commit &&
        (
                set_fake_editor &&
                FAKE_LINES="1 2 3 4" git rebase -i --root 2>actual.2
        ) &&
        head -n4 actual.2 >actual &&
        test_cmp expect actual &&
        test D = $(git cat-file commit HEAD | sed -ne \$p)
'

test_expect_success 'rebase -i respects rebase.missingCommitsCheck = error' '
        cat >expect <<-EOF &&
        Warning: some commits may have been dropped accidentally.
        Dropped commits (newer to older):
         - $(git rev-list --pretty=oneline --abbrev-commit -1 primary)
         - $(git rev-list --pretty=oneline --abbrev-commit -1 primary~2)
        To avoid this message, use "drop" to explicitly remove a commit.

        Use '\''git config rebase.missingCommitsCheck'\'' to change the level of warnings.
        The possible behaviours are: ignore, warn, error.

        You can fix this with '\''git rebase --edit-todo'\'' and then run '\''git rebase --continue'\''.
        Or you can abort the rebase with '\''git rebase --abort'\''.
        EOF
        test_config rebase.missingCommitsCheck error &&
        rebase_setup_and_clean missing-commit &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="1 2 4" \
                        git rebase -i --root 2>actual &&
                test_cmp expect actual &&
                cp .git/rebase-merge/git-rebase-todo.backup \
                        .git/rebase-merge/git-rebase-todo &&
                FAKE_LINES="1 2 drop 3 4 drop 5" git rebase --edit-todo
        ) &&
        git rebase --continue &&
        test D = $(git cat-file commit HEAD | sed -ne \$p) &&
        test B = $(git cat-file commit HEAD^ | sed -ne \$p)
'

test_expect_success 'rebase --edit-todo respects rebase.missingCommitsCheck = ignore' '
        test_config rebase.missingCommitsCheck ignore &&
        rebase_setup_and_clean missing-commit &&
        (
                set_fake_editor &&
                FAKE_LINES="break 1 2 3 4 5" git rebase -i --root &&
                FAKE_LINES="1 2 3 4" git rebase --edit-todo &&
                git rebase --continue 2>actual
        ) &&
        test D = $(git cat-file commit HEAD | sed -ne \$p) &&
        test_grep \
                "Successfully rebased and updated refs/heads/missing-commit" \
                actual
'

test_expect_success 'rebase --edit-todo respects rebase.missingCommitsCheck = warn' '
        cat >expect <<-EOF &&
        error: invalid command '\''pickled'\''
        error: invalid line 1: pickled $(git rev-list --pretty=oneline --abbrev-commit -1 primary~4)
        Warning: some commits may have been dropped accidentally.
        Dropped commits (newer to older):
         - $(git rev-list --pretty=oneline --abbrev-commit -1 primary)
         - $(git rev-list --pretty=oneline --abbrev-commit -1 primary~4)
        To avoid this message, use "drop" to explicitly remove a commit.
        EOF
        head -n5 expect >expect.2 &&
        tail -n1 expect >>expect.2 &&
        tail -n4 expect.2 >expect.3 &&
        test_config rebase.missingCommitsCheck warn &&
        rebase_setup_and_clean missing-commit &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="bad 1 2 3 4 5" \
                        git rebase -i --root &&
                cp .git/rebase-merge/git-rebase-todo.backup orig &&
                FAKE_LINES="2 3 4" git rebase --edit-todo 2>actual.2 &&
                head -n7 actual.2 >actual &&
                test_cmp expect actual &&
                cp orig .git/rebase-merge/git-rebase-todo &&
                FAKE_LINES="1 2 3 4" git rebase --edit-todo 2>actual.2 &&
                head -n4 actual.2 >actual &&
                test_cmp expect.3 actual &&
                git rebase --continue 2>actual
        ) &&
        test D = $(git cat-file commit HEAD | sed -ne \$p) &&
        test_grep \
                "Successfully rebased and updated refs/heads/missing-commit" \
                actual
'

test_expect_success 'rebase --edit-todo respects rebase.missingCommitsCheck = error' '
        cat >expect <<-EOF &&
        error: invalid command '\''pickled'\''
        error: invalid line 1: pickled $(git rev-list --pretty=oneline --abbrev-commit -1 primary~4)
        Warning: some commits may have been dropped accidentally.
        Dropped commits (newer to older):
         - $(git rev-list --pretty=oneline --abbrev-commit -1 primary)
         - $(git rev-list --pretty=oneline --abbrev-commit -1 primary~4)
        To avoid this message, use "drop" to explicitly remove a commit.

        Use '\''git config rebase.missingCommitsCheck'\'' to change the level of warnings.
        The possible behaviours are: ignore, warn, error.

        You can fix this with '\''git rebase --edit-todo'\'' and then run '\''git rebase --continue'\''.
        Or you can abort the rebase with '\''git rebase --abort'\''.
        EOF
        tail -n11 expect >expect.2 &&
        head -n3 expect.2 >expect.3 &&
        tail -n7 expect.2 >>expect.3 &&
        test_config rebase.missingCommitsCheck error &&
        rebase_setup_and_clean missing-commit &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="bad 1 2 3 4 5" \
                        git rebase -i --root &&
                cp .git/rebase-merge/git-rebase-todo.backup orig &&
                test_must_fail env FAKE_LINES="2 3 4" \
                        git rebase --edit-todo 2>actual &&
                test_cmp expect actual &&
                test_must_fail git rebase --continue 2>actual &&
                test_cmp expect.2 actual &&
                test_must_fail git rebase --edit-todo &&
                cp orig .git/rebase-merge/git-rebase-todo &&
                test_must_fail env FAKE_LINES="1 2 3 4" \
                        git rebase --edit-todo 2>actual &&
                test_cmp expect.3 actual &&
                test_must_fail git rebase --continue 2>actual &&
                test_cmp expect.3 actual &&
                cp orig .git/rebase-merge/git-rebase-todo &&
                FAKE_LINES="1 2 3 4 drop 5" git rebase --edit-todo &&
                git rebase --continue 2>actual
        ) &&
        test D = $(git cat-file commit HEAD | sed -ne \$p) &&
        test_grep \
                "Successfully rebased and updated refs/heads/missing-commit" \
                actual
'

test_expect_success 'rebase.missingCommitsCheck = error after resolving conflicts' '
        test_config rebase.missingCommitsCheck error &&
        (
                set_fake_editor &&
                FAKE_LINES="drop 1 break 2 3 4" git rebase -i A E
        ) &&
        git rebase --edit-todo &&
        test_must_fail git rebase --continue &&
        echo x >file1 &&
        git add file1 &&
        git rebase --continue
'

test_expect_success 'rebase.missingCommitsCheck = error when editing for a second time' '
        test_config rebase.missingCommitsCheck error &&
        (
                set_fake_editor &&
                FAKE_LINES="1 break 2 3" git rebase -i A D &&
                cp .git/rebase-merge/git-rebase-todo todo &&
                test_must_fail env FAKE_LINES=2 git rebase --edit-todo &&
                GIT_SEQUENCE_EDITOR="cp todo" git rebase --edit-todo &&
                git rebase --continue
        )
'

test_expect_success 'respects rebase.abbreviateCommands with fixup, squash and exec' '
        rebase_setup_and_clean abbrevcmd &&
        test_commit "first" file1.txt "first line" first &&
        test_commit "second" file1.txt "another line" second &&
        test_commit "fixup! first" file2.txt "first line again" first_fixup &&
        test_commit "squash! second" file1.txt "another line here" second_squash &&
        cat >expected <<-EOF &&
        p $(git rev-list --abbrev-commit -1 first) first
        f $(git rev-list --abbrev-commit -1 first_fixup) fixup! first
        x git show HEAD
        p $(git rev-list --abbrev-commit -1 second) second
        s $(git rev-list --abbrev-commit -1 second_squash) squash! second
        x git show HEAD
        EOF
        git checkout abbrevcmd &&
        test_config rebase.abbreviateCommands true &&
        (
                set_cat_todo_editor &&
                test_must_fail git rebase -i --exec "git show HEAD" \
                        --autosquash primary >actual
        ) &&
        test_cmp expected actual
'

test_expect_success 'static check of bad command' '
        rebase_setup_and_clean bad-cmd &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="1 2 3 bad 4 5" \
                git rebase -i --root 2>actual &&
                test_grep "pickled $(git rev-list --oneline -1 primary~1)" \
                                actual &&
                test_grep "You can fix this with .git rebase --edit-todo.." \
                                actual &&
                FAKE_LINES="1 2 3 drop 4 5" git rebase --edit-todo
        ) &&
        git rebase --continue &&
        test E = $(git cat-file commit HEAD | sed -ne \$p) &&
        test C = $(git cat-file commit HEAD^ | sed -ne \$p)
'

test_expect_success 'the first command cannot be a fixup' '
        rebase_setup_and_clean fixup-first &&

        cat >orig <<-EOF &&
        fixup $(git log -1 --format="%h %s" B)
        pick $(git log -1 --format="%h %s" C)
        EOF

        (
                set_replace_editor orig &&
                test_must_fail git rebase -i A 2>actual
        ) &&
        grep "cannot .fixup. without a previous commit" actual &&
        grep "You can fix this with .git rebase --edit-todo.." actual &&
        # verify that the todo list has not been truncated
        grep -v "^#" .git/rebase-merge/git-rebase-todo >actual &&
        test_cmp orig actual &&

        test_must_fail git rebase --edit-todo 2>actual &&
        grep "cannot .fixup. without a previous commit" actual &&
        grep "You can fix this with .git rebase --edit-todo.." actual &&
        # verify that the todo list has not been truncated
        grep -v "^#" .git/rebase-merge/git-rebase-todo >actual &&
        test_cmp orig actual
'

test_expect_success 'tabs and spaces are accepted in the todolist' '
        rebase_setup_and_clean indented-comment &&
        write_script add-indent.sh <<-\EOF &&
        (
                # Turn single spaces into space/tab mix
                sed "1s/ /      /g; 2s/ /  /g; 3s/ /    /g" "$1"
                printf "\n\t# comment\n #more\n\t # comment\n"
        ) >"$1.new"
        mv "$1.new" "$1"
        EOF
        (
                test_set_editor "$(pwd)/add-indent.sh" &&
                git rebase -i HEAD^^^
        ) &&
        test E = $(git cat-file commit HEAD | sed -ne \$p)
'

test_expect_success 'static check of bad SHA-1' '
        rebase_setup_and_clean bad-sha &&
        (
                set_fake_editor &&
                test_must_fail env FAKE_LINES="1 2 edit fakesha 3 4 5 #" \
                        git rebase -i --root 2>actual &&
                        test_grep "edit XXXXXXX False commit" actual &&
                        test_grep "You can fix this with .git rebase --edit-todo.." \
                                        actual &&
                FAKE_LINES="1 2 4 5 6" git rebase --edit-todo
        ) &&
        git rebase --continue &&
        test E = $(git cat-file commit HEAD | sed -ne \$p)
'

test_expect_success 'editor saves as CR/LF' '
        git checkout -b with-crlf &&
        write_script add-crs.sh <<-\EOF &&
        sed -e "s/\$/Q/" <"$1" | tr Q "\\015" >"$1".new &&
        mv -f "$1".new "$1"
        EOF
        (
                test_set_editor "$(pwd)/add-crs.sh" &&
                git rebase -i HEAD^
        )
'

test_expect_success 'rebase -i --gpg-sign=<key-id>' '
        test_when_finished "test_might_fail git rebase --abort" &&
        (
                set_fake_editor &&
                FAKE_LINES="edit 1" git rebase -i --gpg-sign="\"S I Gner\"" \
                        HEAD^ >out 2>err
        ) &&
        test_grep "$SQ-S\"S I Gner\"$SQ" err
'

test_expect_success 'rebase -i --gpg-sign=<key-id> overrides commit.gpgSign' '
        test_when_finished "test_might_fail git rebase --abort" &&
        test_config commit.gpgsign true &&
        (
                set_fake_editor &&
                FAKE_LINES="edit 1" git rebase -i --gpg-sign="\"S I Gner\"" \
                        HEAD^ >out 2>err
        ) &&
        test_grep "$SQ-S\"S I Gner\"$SQ" err
'

test_expect_success 'valid author header after --root swap' '
        rebase_setup_and_clean author-header no-conflict-branch &&
        git commit --amend --author="Au ${SQ}thor <author@example.com>" --no-edit &&
        git cat-file commit HEAD | grep ^author >expected &&
        (
                set_fake_editor &&
                FAKE_LINES="5 1" git rebase -i --root
        ) &&
        git cat-file commit HEAD^ | grep ^author >actual &&
        test_cmp expected actual
'

test_expect_success 'valid author header when author contains single quote' '
        rebase_setup_and_clean author-header no-conflict-branch &&
        git commit --amend --author="Au ${SQ}thor <author@example.com>" --no-edit &&
        git cat-file commit HEAD | grep ^author >expected &&
        (
                set_fake_editor &&
                FAKE_LINES="2" git rebase -i HEAD~2
        ) &&
        git cat-file commit HEAD | grep ^author >actual &&
        test_cmp expected actual
'

test_expect_success 'post-commit hook is called' '
        >actual &&
        test_hook post-commit <<-\EOS &&
        git rev-parse HEAD >>actual
        EOS
        (
                set_fake_editor &&
                FAKE_LINES="edit 4 1 reword 2 fixup 3" git rebase -i A E &&
                echo x>file3 &&
                git add file3 &&
                FAKE_COMMIT_MESSAGE=edited git rebase --continue
        ) &&
        git rev-parse HEAD@{5} HEAD@{4} HEAD@{3} HEAD@{2} HEAD@{1} HEAD \
                >expect &&
        test_cmp expect actual
'

test_expect_success 'correct error message for partial commit after empty pick' '
        test_when_finished "git rebase --abort" &&
        (
                set_fake_editor &&
                FAKE_LINES="2 1 1" &&
                export FAKE_LINES &&
                test_must_fail git rebase -i A D
        ) &&
        echo x >file1 &&
        test_must_fail git commit file1 2>err &&
        test_grep "cannot do a partial commit during a rebase." err
'

test_expect_success 'correct error message for commit --amend after empty pick' '
        test_when_finished "git rebase --abort" &&
        (
                set_fake_editor &&
                FAKE_LINES="1 1" &&
                export FAKE_LINES &&
                test_must_fail git rebase -i A D
        ) &&
        echo x>file1 &&
        test_must_fail git commit -a --amend 2>err &&
        test_grep "middle of a rebase -- cannot amend." err
'

test_expect_success 'todo has correct onto hash' '
        GIT_SEQUENCE_EDITOR=cat git rebase -i no-conflict-branch~4 no-conflict-branch >actual &&
        onto=$(git rev-parse --short HEAD~4) &&
        test_grep "^# Rebase ..* onto $onto" actual
'

test_expect_success 'ORIG_HEAD is updated correctly' '
        test_when_finished "git checkout primary && git branch -D test-orig-head" &&
        git checkout -b test-orig-head A &&
        git commit --allow-empty -m A1 &&
        git commit --allow-empty -m A2 &&
        git commit --allow-empty -m A3 &&
        git commit --allow-empty -m A4 &&
        git rebase primary &&
        test_cmp_rev ORIG_HEAD test-orig-head@{1}
'

test_expect_success '--update-refs adds label and update-ref commands' '
        git checkout -b update-refs no-conflict-branch &&
        git branch -f base HEAD~4 &&
        git branch -f first HEAD~3 &&
        git branch -f second HEAD~3 &&
        git branch -f third HEAD~1 &&
        git commit --allow-empty --fixup=third &&
        git branch -f is-not-reordered &&
        git commit --allow-empty --fixup=HEAD~4 &&
        git branch -f shared-tip &&
        (
                set_cat_todo_editor &&

                cat >expect <<-EOF &&
                pick $(git log -1 --format=%h J) J
                fixup $(git log -1 --format=%h update-refs) fixup! J # empty
                update-ref refs/heads/second
                update-ref refs/heads/first
                pick $(git log -1 --format=%h K) K
                pick $(git log -1 --format=%h L) L
                fixup $(git log -1 --format=%h is-not-reordered) fixup! L # empty
                update-ref refs/heads/third
                pick $(git log -1 --format=%h M) M
                update-ref refs/heads/no-conflict-branch
                update-ref refs/heads/is-not-reordered
                update-ref refs/heads/shared-tip
                EOF

                test_must_fail git rebase -i --autosquash --update-refs primary >todo &&
                test_cmp expect todo &&

                test_must_fail git -c rebase.autosquash=true \
                                   -c rebase.updaterefs=true \
                                   rebase -i primary >todo &&

                test_cmp expect todo
        )
'

test_expect_success '--update-refs adds commands with --rebase-merges' '
        git checkout -b update-refs-with-merge no-conflict-branch &&
        git branch -f base HEAD~4 &&
        git branch -f first HEAD~3 &&
        git branch -f second HEAD~3 &&
        git branch -f third HEAD~1 &&
        git merge -m merge branch2 &&
        git branch -f merge-branch &&
        git commit --fixup=third --allow-empty &&
        (
                set_cat_todo_editor &&

                cat >expect <<-EOF &&
                label onto
                reset onto
                pick $(git log -1 --format=%h branch2~1) F
                pick $(git log -1 --format=%h branch2) I
                update-ref refs/heads/branch2
                label merge
                reset onto
                pick $(git log -1 --format=%h refs/heads/second) J
                update-ref refs/heads/second
                update-ref refs/heads/first
                pick $(git log -1 --format=%h refs/heads/third~1) K
                pick $(git log -1 --format=%h refs/heads/third) L
                fixup $(git log -1 --format=%h update-refs-with-merge) fixup! L # empty
                update-ref refs/heads/third
                pick $(git log -1 --format=%h HEAD~2) M
                update-ref refs/heads/no-conflict-branch
                merge -C $(git log -1 --format=%h HEAD~1) merge # merge
                update-ref refs/heads/merge-branch
                EOF

                test_must_fail git rebase -i --autosquash \
                                   --rebase-merges=rebase-cousins \
                                   --update-refs primary >todo &&

                test_cmp expect todo &&

                test_must_fail git -c rebase.autosquash=true \
                                   -c rebase.updaterefs=true \
                                   rebase -i \
                                   --rebase-merges=rebase-cousins \
                                   primary >todo &&

                test_cmp expect todo
        )
'

test_expect_success '--update-refs updates refs correctly' '
        git checkout -B update-refs no-conflict-branch &&
        git branch -f base HEAD~4 &&
        git branch -f first HEAD~3 &&
        git branch -f second HEAD~3 &&
        git branch -f third HEAD~1 &&
        test_commit extra2 fileX &&
        git commit --amend --fixup=L &&

        git rebase -i --autosquash --update-refs primary 2>err &&

        test_cmp_rev HEAD~3 refs/heads/first &&
        test_cmp_rev HEAD~3 refs/heads/second &&
        test_cmp_rev HEAD~1 refs/heads/third &&
        test_cmp_rev HEAD refs/heads/no-conflict-branch &&

        cat >expect <<-\EOF &&
        Successfully rebased and updated refs/heads/update-refs.
        Updated the following refs with --update-refs:
                refs/heads/first
                refs/heads/no-conflict-branch
                refs/heads/second
                refs/heads/third
        EOF

        # Clear "Rebasing (X/Y)" progress lines and drop leading tabs.
        sed -e "s/Rebasing.*Successfully/Successfully/g" -e "s/^\t//g" \
                <err >err.trimmed &&
        test_cmp expect err.trimmed
'

test_expect_success 'respect user edits to update-ref steps' '
        git checkout -B update-refs-break no-conflict-branch &&
        git branch -f base HEAD~4 &&
        git branch -f first HEAD~3 &&
        git branch -f second HEAD~3 &&
        git branch -f third HEAD~1 &&
        git branch -f unseen base &&

        # First, we will add breaks to the expected todo file
        cat >fake-todo-1 <<-EOF &&
        pick $(git rev-parse HEAD~3)
        break
        update-ref refs/heads/second
        update-ref refs/heads/first

        pick $(git rev-parse HEAD~2)
        pick $(git rev-parse HEAD~1)
        update-ref refs/heads/third

        pick $(git rev-parse HEAD)
        update-ref refs/heads/no-conflict-branch
        EOF

        # Second, we will drop some update-refs commands (and move one)
        cat >fake-todo-2 <<-EOF &&
        update-ref refs/heads/second

        pick $(git rev-parse HEAD~2)
        update-ref refs/heads/third
        pick $(git rev-parse HEAD~1)
        break

        pick $(git rev-parse HEAD)
        EOF

        # Third, we will:
        # * insert a new one (new-branch),
        # * re-add an old one (first), and
        # * add a second instance of a previously-stored one (second)
        cat >fake-todo-3 <<-EOF &&
        update-ref refs/heads/unseen
        update-ref refs/heads/new-branch
        pick $(git rev-parse HEAD)
        update-ref refs/heads/first
        update-ref refs/heads/second
        EOF

        (
                set_replace_editor fake-todo-1 &&
                git rebase -i --update-refs primary &&

                # These branches are currently locked.
                for b in first second third no-conflict-branch
                do
                        test_must_fail git branch -f $b base || return 1
                done &&

                set_replace_editor fake-todo-2 &&
                git rebase --edit-todo &&

                # These branches are currently locked.
                for b in second third
                do
                        test_must_fail git branch -f $b base || return 1
                done &&

                # These branches are currently unlocked for checkout.
                for b in first no-conflict-branch
                do
                        git worktree add wt-$b $b &&
                        git worktree remove wt-$b || return 1
                done &&

                git rebase --continue &&

                set_replace_editor fake-todo-3 &&
                git rebase --edit-todo &&

                # These branches are currently locked.
                for b in second third first unseen
                do
                        test_must_fail git branch -f $b base || return 1
                done &&

                # These branches are currently unlocked for checkout.
                for b in no-conflict-branch
                do
                        git worktree add wt-$b $b &&
                        git worktree remove wt-$b || return 1
                done &&

                git rebase --continue
        ) &&

        test_cmp_rev HEAD~2 refs/heads/third &&
        test_cmp_rev HEAD~1 refs/heads/unseen &&
        test_cmp_rev HEAD~1 refs/heads/new-branch &&
        test_cmp_rev HEAD refs/heads/first &&
        test_cmp_rev HEAD refs/heads/second &&
        test_cmp_rev HEAD refs/heads/no-conflict-branch
'

test_expect_success '--update-refs: all update-ref lines removed' '
        git checkout -b test-refs-not-removed no-conflict-branch &&
        git branch -f base HEAD~4 &&
        git branch -f first HEAD~3 &&
        git branch -f second HEAD~3 &&
        git branch -f third HEAD~1 &&
        git branch -f tip &&

        test_commit test-refs-not-removed &&
        git commit --amend --fixup first &&

        git rev-parse first second third tip no-conflict-branch >expect-oids &&

        (
                set_cat_todo_editor &&
                test_must_fail git rebase -i --update-refs base >todo.raw &&
                sed -e "/^update-ref/d" <todo.raw >todo
        ) &&
        (
                set_replace_editor todo &&
                git rebase -i --update-refs base
        ) &&

        # Ensure refs are not deleted and their OIDs have not changed
        git rev-parse first second third tip no-conflict-branch >actual-oids &&
        test_cmp expect-oids actual-oids
'

test_expect_success '--update-refs: all update-ref lines removed, then some re-added' '
        git checkout -b test-refs-not-removed2 no-conflict-branch &&
        git branch -f base HEAD~4 &&
        git branch -f first HEAD~3 &&
        git branch -f second HEAD~3 &&
        git branch -f third HEAD~1 &&
        git branch -f tip &&

        test_commit test-refs-not-removed2 &&
        git commit --amend --fixup first &&

        git rev-parse first second third >expect-oids &&

        (
                set_cat_todo_editor &&
                test_must_fail git rebase -i \
                        --autosquash --update-refs \
                        base >todo.raw &&
                sed -e "/^update-ref/d" <todo.raw >todo
        ) &&

        # Add a break to the end of the todo so we can edit later
        echo "break" >>todo &&

        (
                set_replace_editor todo &&
                git rebase -i --autosquash --update-refs base &&
                echo "update-ref refs/heads/tip" >todo &&
                git rebase --edit-todo &&
                git rebase --continue
        ) &&

        # Ensure first/second/third are unchanged, but tip is updated
        git rev-parse first second third >actual-oids &&
        test_cmp expect-oids actual-oids &&
        test_cmp_rev HEAD tip
'

test_expect_success '--update-refs: --edit-todo with no update-ref lines' '
        git checkout -b test-refs-not-removed3 no-conflict-branch &&
        git branch -f base HEAD~4 &&
        git branch -f first HEAD~3 &&
        git branch -f second HEAD~3 &&
        git branch -f third HEAD~1 &&
        git branch -f tip &&

        test_commit test-refs-not-removed3 &&
        git commit --amend --fixup first &&

        git rev-parse first second third tip no-conflict-branch >expect-oids &&

        (
                set_cat_todo_editor &&
                test_must_fail git rebase -i \
                        --autosquash --update-refs \
                        base >todo.raw &&
                sed -e "/^update-ref/d" <todo.raw >todo
        ) &&

        # Add a break to the beginning of the todo so we can resume with no
        # update-ref lines
        echo "break" >todo.new &&
        cat todo >>todo.new &&

        (
                set_replace_editor todo.new &&
                git rebase -i --autosquash --update-refs base &&

                # Make no changes when editing so update-refs is still empty
                cat todo >todo.new &&
                git rebase --edit-todo &&
                git rebase --continue
        ) &&

        # Ensure refs are not deleted and their OIDs have not changed
        git rev-parse first second third tip no-conflict-branch >actual-oids &&
        test_cmp expect-oids actual-oids
'

test_expect_success '--update-refs: check failed ref update' '
        test_when_finished "test_might_fail git rebase --abort" &&
        git checkout -B update-refs-error no-conflict-branch &&
        git branch -f base HEAD~4 &&
        git branch -f first HEAD~3 &&
        git branch -f second HEAD~2 &&
        git branch -f third HEAD~1 &&

        cat >fake-todo <<-EOF &&
        pick $(git rev-parse HEAD~3)
        break
        update-ref refs/heads/first

        pick $(git rev-parse HEAD~2)
        update-ref refs/heads/second

        pick $(git rev-parse HEAD~1)
        update-ref refs/heads/third

        pick $(git rev-parse HEAD)
        update-ref refs/heads/no-conflict-branch
        EOF

        (
                set_replace_editor fake-todo &&
                git rebase -i --update-refs base
        ) &&

        # At this point, the values of first, second, and third are
        # recorded in the update-refs file. We will force-update the
        # "second" ref, but "git branch -f" will not work because of
        # the lock in the update-refs file.
        git update-ref refs/heads/second third &&

        test_must_fail git rebase --continue 2>err &&
        grep "update_ref failed for ref '\''refs/heads/second'\''" err &&

        cat >expect <<-\EOF &&
        Updated the following refs with --update-refs:
                refs/heads/first
                refs/heads/no-conflict-branch
                refs/heads/third
        Failed to update the following refs with --update-refs:
                refs/heads/second
        EOF

        # Clear "Rebasing (X/Y)" progress lines and drop leading tabs.
        tail -n 6 err >err.last &&
        sed -e "s/Rebasing.*Successfully/Successfully/g" -e "s/^\t//g" \
                <err.last >err.trimmed &&
        test_cmp expect err.trimmed
'

test_expect_success 'bad labels and refs rejected when parsing todo list' '
        test_when_finished "test_might_fail git rebase --abort" &&
        cat >todo <<-\EOF &&
        exec >execed
        label #
        label :invalid
        update-ref :bad
        update-ref topic
        EOF
        rm -f execed &&
        (
                set_replace_editor todo &&
                test_must_fail git rebase -i HEAD 2>err
        ) &&
        grep "'\''#'\'' is not a valid label" err &&
        grep "'\'':invalid'\'' is not a valid label" err &&
        grep "'\'':bad'\'' is not a valid refname" err &&
        grep "update-ref requires a fully qualified refname e.g. refs/heads/topic" \
                err &&
        test_path_is_missing execed
'

test_expect_success 'non-merge commands reject merge commits' '
        test_when_finished "test_might_fail git rebase --abort" &&
        git checkout E &&
        git merge I &&
        oid=$(git rev-parse HEAD) &&
        cat >todo <<-EOF &&
        pick $oid
        reword $oid
        edit $oid
        fixup $oid
        squash $oid
        EOF
        (
                set_replace_editor todo &&
                test_must_fail git rebase -i HEAD 2>actual
        ) &&
        cat >expect <<-EOF &&
        error: ${SQ}pick${SQ} does not accept merge commits
        hint: ${SQ}pick${SQ} does not take a merge commit. If you wanted to
        hint: replay the merge, use ${SQ}merge -C${SQ} on the commit.
        hint: Disable this message with "git config advice.rebaseTodoError false"
        error: invalid line 1: pick $oid
        error: ${SQ}reword${SQ} does not accept merge commits
        hint: ${SQ}reword${SQ} does not take a merge commit. If you wanted to
        hint: replay the merge and reword the commit message, use
        hint: ${SQ}merge -c${SQ} on the commit
        hint: Disable this message with "git config advice.rebaseTodoError false"
        error: invalid line 2: reword $oid
        error: ${SQ}edit${SQ} does not accept merge commits
        hint: ${SQ}edit${SQ} does not take a merge commit. If you wanted to
        hint: replay the merge, use ${SQ}merge -C${SQ} on the commit, and then
        hint: ${SQ}break${SQ} to give the control back to you so that you can
        hint: do ${SQ}git commit --amend && git rebase --continue${SQ}.
        hint: Disable this message with "git config advice.rebaseTodoError false"
        error: invalid line 3: edit $oid
        error: cannot squash merge commit into another commit
        error: invalid line 4: fixup $oid
        error: cannot squash merge commit into another commit
        error: invalid line 5: squash $oid
        You can fix this with ${SQ}git rebase --edit-todo${SQ} and then run ${SQ}git rebase --continue${SQ}.
        Or you can abort the rebase with ${SQ}git rebase --abort${SQ}.
        EOF
        test_cmp expect actual
'

# This must be the last test in this file
test_expect_success '$EDITOR and friends are unchanged' '
        test_editor_unchanged
'

test_done