From b6266dc88b1fcc91d084cc9c65e0b0805cf59d55 Mon Sep 17 00:00:00 2001 From: John Keeping Date: Tue, 15 Jul 2014 20:14:02 +0100 Subject: rebase--am: use --cherry-pick instead of --ignore-if-in-upstream When using `git format-patch --ignore-if-in-upstream` we are only allowed to give a single revision range. In the next commit we will want to add an additional exclusion revision in order to handle fork points correctly, so convert `git-rebase--am` to use a symmetric difference with `--cherry-pick --right-only`. This does not change the result of the format-patch invocation, just how we spell the arguments. Signed-off-by: John Keeping Signed-off-by: Junio C Hamano --- git-rebase--am.sh | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/git-rebase--am.sh b/git-rebase--am.sh index ca20e1e66f..902bf2d969 100644 --- a/git-rebase--am.sh +++ b/git-rebase--am.sh @@ -29,7 +29,13 @@ skip) ;; esac -test -n "$rebase_root" && root_flag=--root +if test -z "$rebase_root" + # this is now equivalent to ! -z "$upstream" +then + revisions=$upstream...$orig_head +else + revisions=$onto...$orig_head +fi ret=0 if test -n "$keep_empty" @@ -38,14 +44,15 @@ then # empty commits and even if it didn't the format doesn't really lend # itself well to recording empty patches. fortunately, cherry-pick # makes this easy - git cherry-pick ${gpg_sign_opt:+"$gpg_sign_opt"} --allow-empty "$revisions" + git cherry-pick ${gpg_sign_opt:+"$gpg_sign_opt"} --allow-empty \ + --right-only "$revisions" ret=$? else rm -f "$GIT_DIR/rebased-patches" - git format-patch -k --stdout --full-index --ignore-if-in-upstream \ + git format-patch -k --stdout --full-index --cherry-pick --right-only \ --src-prefix=a/ --dst-prefix=b/ --no-renames --no-cover-letter \ - $root_flag "$revisions" >"$GIT_DIR/rebased-patches" + "$revisions" >"$GIT_DIR/rebased-patches" ret=$? if test 0 != $ret -- cgit v1.2.3 From 1e0dacdbdb751caa5936b6d1510f5e8db4d1ed5f Mon Sep 17 00:00:00 2001 From: John Keeping Date: Wed, 16 Jul 2014 20:23:49 +0100 Subject: rebase: omit patch-identical commits with --fork-point When the `--fork-point` argument was added to `git rebase`, we changed the value of $upstream to be the fork point instead of the point from which we want to rebase. When $orig_head..$upstream is empty this does not change the behaviour, but when there are new changes in the upstream we are no longer checking if any of them are patch-identical with changes in $upstream..$orig_head. Fix this by introducing a new variable to hold the fork point and using this to restrict the range as an extra (negative) revision argument so that the set of desired revisions becomes (in fork-point mode): git rev-list --cherry-pick --right-only \ $upstream...$orig_head ^$fork_point This allows us to correctly handle the scenario where we have the following topology: C --- D --- E <- dev / B <- master@{1} / o --- B' --- C* --- D* <- master where: - B' is a fixed-up version of B that is not patch-identical with B; - C* and D* are patch-identical to C and D respectively and conflict textually if applied in the wrong order; - E depends textually on D. The correct result of `git rebase master dev` is that B is identified as the fork-point of dev and master, so that C, D, E are the commits that need to be replayed onto master; but C and D are patch-identical with C* and D* and so can be dropped, so that the end result is: o --- B' --- C* --- D* --- E <- dev If the fork-point is not identified, then picking B onto a branch containing B' results in a conflict and if the patch-identical commits are not correctly identified then picking C onto a branch containing D (or equivalently D*) results in a conflict. This change allows us to handle both of these cases, where previously we either identified the fork-point (with `--fork-point`) but not the patch-identical commits *or* (with `--no-fork-point`) identified the patch-identical commits but not the fact that master had been rewritten. Reported-by: Ted Felix Signed-off-by: John Keeping Signed-off-by: Junio C Hamano --- git-rebase--am.sh | 6 ++++-- git-rebase--interactive.sh | 2 +- git-rebase.sh | 7 ++++--- t/t3400-rebase.sh | 23 +++++++++++++++++++++++ 4 files changed, 32 insertions(+), 6 deletions(-) diff --git a/git-rebase--am.sh b/git-rebase--am.sh index 902bf2d969..f923732333 100644 --- a/git-rebase--am.sh +++ b/git-rebase--am.sh @@ -45,14 +45,16 @@ then # itself well to recording empty patches. fortunately, cherry-pick # makes this easy git cherry-pick ${gpg_sign_opt:+"$gpg_sign_opt"} --allow-empty \ - --right-only "$revisions" + --right-only "$revisions" \ + ${restrict_revision+^$restrict_revision} ret=$? else rm -f "$GIT_DIR/rebased-patches" git format-patch -k --stdout --full-index --cherry-pick --right-only \ --src-prefix=a/ --dst-prefix=b/ --no-renames --no-cover-letter \ - "$revisions" >"$GIT_DIR/rebased-patches" + "$revisions" ${restrict_revision+^$restrict_revision} \ + >"$GIT_DIR/rebased-patches" ret=$? if test 0 != $ret diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh index 7e1eda0088..b64dd28acf 100644 --- a/git-rebase--interactive.sh +++ b/git-rebase--interactive.sh @@ -963,7 +963,7 @@ else fi git rev-list $merges_option --pretty=oneline --abbrev-commit \ --abbrev=7 --reverse --left-right --topo-order \ - $revisions | \ + $revisions ${restrict_revision+^$restrict_revision} | \ sed -n "s/^>//p" | while read -r shortsha1 rest do diff --git a/git-rebase.sh b/git-rebase.sh index 06c810b64f..55da9db818 100755 --- a/git-rebase.sh +++ b/git-rebase.sh @@ -59,6 +59,7 @@ If you prefer to skip this patch, run "git rebase --skip" instead. To check out the original branch and stop rebasing, run "git rebase --abort".') " unset onto +unset restrict_revision cmd= strategy= strategy_opts= @@ -546,7 +547,7 @@ then "${switch_to:-HEAD}") if test -n "$new_upstream" then - upstream=$new_upstream + restrict_revision=$new_upstream fi fi @@ -572,7 +573,7 @@ require_clean_work_tree "rebase" "$(gettext "Please commit or stash them.")" # and if this is not an interactive rebase. mb=$(git merge-base "$onto" "$orig_head") if test "$type" != interactive && test "$upstream" = "$onto" && - test "$mb" = "$onto" && + test "$mb" = "$onto" && test -z "$restrict_revision" && # linear history? ! (git rev-list --parents "$onto".."$orig_head" | sane_grep " .* ") > /dev/null then @@ -626,7 +627,7 @@ if test -n "$rebase_root" then revisions="$onto..$orig_head" else - revisions="$upstream..$orig_head" + revisions="${restrict_revision-$upstream}..$orig_head" fi run_specific_rebase diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh index 80e0a951ea..47b5682662 100755 --- a/t/t3400-rebase.sh +++ b/t/t3400-rebase.sh @@ -169,6 +169,29 @@ test_expect_success 'default to common base in @{upstream}s reflog if no upstrea test_cmp expect actual ' +test_expect_success 'cherry-picked commits and fork-point work together' ' + git checkout default-base && + echo Amended >A && + git commit -a --no-edit --amend && + test_commit B B && + test_commit new_B B "New B" && + test_commit C C && + git checkout default && + git reset --hard default-base@{4} && + test_commit D D && + git cherry-pick -2 default-base^ && + test_commit final_B B "Final B" && + git rebase && + echo Amended >expect && + test_cmp A expect && + echo "Final B" >expect && + test_cmp B expect && + echo C >expect && + test_cmp C expect && + echo D >expect && + test_cmp D expect +' + test_expect_success 'rebase -q is quiet' ' git checkout -b quiet topic && git rebase -q master >output.out 2>&1 && -- cgit v1.2.3