From 12bf828348922935b1d5ca10f2d829c9a64b6e41 Mon Sep 17 00:00:00 2001 From: Andrew Wong Date: Sat, 18 Jun 2011 18:12:01 -0400 Subject: [PATCH] rebase -i -p: include non-first-parent commits in todo list Consider this graph: D---E (topic, HEAD) / / A---B---C (master) \ F (topic2) and the following three commands: 1. git rebase -i -p A 2. git rebase -i -p --onto F A 3. git rebase -i -p B Currently, (1) and (2) will pick B, D, C, and E onto A and F, respectively. However, (3) will only pick D and E onto B, but not C, which is inconsistent with (1) and (2). As a result, we cannot modify C during the interactive-rebase. The current behavior also creates a bug if we do: 4. git rebase -i -p C In (4), E is never picked. And since interactive-rebase resets "HEAD" to "onto" before picking any commits, D and E are lost after the interactive-rebase. This patch fixes the inconsistency and bug by ensuring that all children of upstream are always picked. This essentially reverts the commit: d80d6bc146232d81f1bb4bc58e5d89263fd228d4 When compiling the todo list, commits reachable from "upstream" should never be skipped under any conditions. Otherwise, we lose the ability to modify them like (3), and create a bug like (4). Two of the tests contain a scenario like (3). Since the new behavior added more commits for picking, these tests need to be updated to account for the additional pick lines. A new test has also been added for (4). Signed-off-by: Andrew Wong Signed-off-by: Junio C Hamano --- git-rebase--interactive.sh | 3 +-- t/t3404-rebase-interactive.sh | 2 +- t/t3409-rebase-preserve-merges.sh | 28 +++++++++++++++++++++++- t/t3411-rebase-preserve-around-merges.sh | 2 +- 4 files changed, 30 insertions(+), 5 deletions(-) diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh index 65690af893..c6ba7c1551 100644 --- a/git-rebase--interactive.sh +++ b/git-rebase--interactive.sh @@ -713,7 +713,6 @@ then # parents to rewrite and skipping dropped commits would # prematurely end our probe merges_option= - first_after_upstream="$(git rev-list --reverse --first-parent $upstream..$orig_head | head -n 1)" else merges_option="--no-merges --cherry-pick" fi @@ -746,7 +745,7 @@ do preserve=t for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-) do - if test -f "$rewritten"/$p -a \( $p != $onto -o $sha1 = $first_after_upstream \) + if test -f "$rewritten"/$p then preserve=f fi diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh index 47c8371c7e..8538813d1d 100755 --- a/t/t3404-rebase-interactive.sh +++ b/t/t3404-rebase-interactive.sh @@ -295,7 +295,7 @@ test_expect_success 'preserve merges with -p' ' ' test_expect_success 'edit ancestor with -p' ' - FAKE_LINES="1 edit 2 3 4" git rebase -i -p HEAD~3 && + FAKE_LINES="1 2 edit 3 4" git rebase -i -p HEAD~3 && echo 2 > unrelated-file && test_tick && git commit -m L2-modified --amend unrelated-file && diff --git a/t/t3409-rebase-preserve-merges.sh b/t/t3409-rebase-preserve-merges.sh index 08201e2331..6de4e2263f 100755 --- a/t/t3409-rebase-preserve-merges.sh +++ b/t/t3409-rebase-preserve-merges.sh @@ -37,7 +37,15 @@ export GIT_AUTHOR_EMAIL # \ # B2 <-- origin/topic # -# In all cases, 'topic' is rebased onto 'origin/topic'. +# Clone 4 (merge using second parent as base): +# +# A1--A2--B3 <-- origin/master +# \ +# B1--A3--M <-- topic +# \ / +# \--A4 <-- topic2 +# \ +# B2 <-- origin/topic test_expect_success 'setup for merge-preserving rebase' \ 'echo First > A && @@ -57,6 +65,13 @@ test_expect_success 'setup for merge-preserving rebase' \ git merge origin/master ) && + git clone ./. clone4 && + ( + cd clone4 && + git checkout -b topic origin/topic && + git merge origin/master + ) && + echo Fifth > B && git add B && git commit -m "Add different B" && @@ -123,4 +138,15 @@ test_expect_success 'rebase -p preserves no-ff merges' ' ) ' +test_expect_success 'rebase -p works when base inside second parent' ' + ( + cd clone4 && + git fetch && + git rebase -p HEAD^2 && + test 1 = $(git rev-list --all --pretty=oneline | grep "Modify A" | wc -l) && + test 1 = $(git rev-list --all --pretty=oneline | grep "Modify B" | wc -l) && + test 1 = $(git rev-list --all --pretty=oneline | grep "Merge remote-tracking branch " | wc -l) + ) +' + test_done diff --git a/t/t3411-rebase-preserve-around-merges.sh b/t/t3411-rebase-preserve-around-merges.sh index 14a23cd872..ace8e54e9b 100755 --- a/t/t3411-rebase-preserve-around-merges.sh +++ b/t/t3411-rebase-preserve-around-merges.sh @@ -37,7 +37,7 @@ test_expect_success 'setup' ' # -- C1 -- # test_expect_success 'squash F1 into D1' ' - FAKE_LINES="1 squash 3 2" git rebase -i -p B1 && + FAKE_LINES="1 squash 4 2 3" git rebase -i -p B1 && test "$(git rev-parse HEAD^2)" = "$(git rev-parse C1)" && test "$(git rev-parse HEAD~2)" = "$(git rev-parse B1)" && git tag E2