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a73e22e963
When giving multiple individual revisions to cherry-pick or revert, as in 'git cherry-pick A B' or 'git revert B A', one would expect them to be picked/reverted in the order given on the command line. They are instead ordered by their commit timestamp -- in chronological order for "cherry-pick" and in reverse chronological order for "revert". This matches the order in which one would usually give them on the command line, making this bug somewhat hard to notice. Still, it has been reported at least once before [1]. It seems like the chronological sorting happened by accident because the revision walker has traditionally always sorted commits in reverse chronological order when rev_info.no_walk was enabled. In the case of 'git revert B A' where B is newer than A, this sorting is a no-op. For 'git cherry-pick A B', the sorting would reverse the arguments, but because the sequencer also flips the rev_info.reverse flag when picking (as opposed to reverting), the end result is a chronological order. The rev_info.reverse flag was probably flipped so that the revision walker emits B before C in 'git cherry-pick A..C'; that it happened to effectively undo the unexpected sorting done when not walking, was probably a coincidence that allowed this bug to happen at all. Fix the bug by telling the revision walker not to sort the commits when not walking. The only case we want to reverse the order is now when cherry-picking and walking revisions (rev_info.no_walk = 0). [1] http://thread.gmane.org/gmane.comp.version-control.git/164794 Signed-off-by: Martin von Zweigbergk <martinvonz@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
188 lines
4.6 KiB
Bash
Executable file
188 lines
4.6 KiB
Bash
Executable file
#!/bin/sh
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test_description='test cherry-picking many commits'
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. ./test-lib.sh
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check_head_differs_from() {
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head=$(git rev-parse --verify HEAD) &&
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arg=$(git rev-parse --verify "$1") &&
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test "$head" != "$arg"
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}
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check_head_equals() {
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head=$(git rev-parse --verify HEAD) &&
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arg=$(git rev-parse --verify "$1") &&
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test "$head" = "$arg"
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}
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test_expect_success setup '
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echo first > file1 &&
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git add file1 &&
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test_tick &&
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git commit -m "first" &&
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git tag first &&
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git checkout -b other &&
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for val in second third fourth
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do
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echo $val >> file1 &&
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git add file1 &&
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test_tick &&
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git commit -m "$val" &&
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git tag $val
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done
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'
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test_expect_success 'cherry-pick first..fourth works' '
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git checkout -f master &&
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git reset --hard first &&
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test_tick &&
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git cherry-pick first..fourth &&
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git diff --quiet other &&
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git diff --quiet HEAD other &&
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check_head_differs_from fourth
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'
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test_expect_success 'cherry-pick three one two works' '
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git checkout -f first &&
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test_commit one &&
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test_commit two &&
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test_commit three &&
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git checkout -f master &&
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git reset --hard first &&
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git cherry-pick three one two &&
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git diff --quiet three &&
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git diff --quiet HEAD three &&
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test "$(git log --reverse --format=%s first..)" = "three
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one
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two"
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'
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test_expect_success 'output to keep user entertained during multi-pick' '
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cat <<-\EOF >expected &&
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[master OBJID] second
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Author: A U Thor <author@example.com>
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1 file changed, 1 insertion(+)
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[master OBJID] third
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Author: A U Thor <author@example.com>
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1 file changed, 1 insertion(+)
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[master OBJID] fourth
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Author: A U Thor <author@example.com>
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1 file changed, 1 insertion(+)
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EOF
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git checkout -f master &&
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git reset --hard first &&
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test_tick &&
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git cherry-pick first..fourth >actual &&
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sed -e "s/$_x05[0-9a-f][0-9a-f]/OBJID/" <actual >actual.fuzzy &&
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test_line_count -ge 3 actual.fuzzy &&
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test_i18ncmp expected actual.fuzzy
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'
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test_expect_success 'cherry-pick --strategy resolve first..fourth works' '
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git checkout -f master &&
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git reset --hard first &&
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test_tick &&
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git cherry-pick --strategy resolve first..fourth &&
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git diff --quiet other &&
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git diff --quiet HEAD other &&
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check_head_differs_from fourth
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'
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test_expect_success 'output during multi-pick indicates merge strategy' '
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cat <<-\EOF >expected &&
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Trying simple merge.
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[master OBJID] second
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Author: A U Thor <author@example.com>
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1 file changed, 1 insertion(+)
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Trying simple merge.
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[master OBJID] third
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Author: A U Thor <author@example.com>
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1 file changed, 1 insertion(+)
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Trying simple merge.
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[master OBJID] fourth
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Author: A U Thor <author@example.com>
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1 file changed, 1 insertion(+)
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EOF
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git checkout -f master &&
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git reset --hard first &&
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test_tick &&
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git cherry-pick --strategy resolve first..fourth >actual &&
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sed -e "s/$_x05[0-9a-f][0-9a-f]/OBJID/" <actual >actual.fuzzy &&
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test_i18ncmp expected actual.fuzzy
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'
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test_expect_success 'cherry-pick --ff first..fourth works' '
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git checkout -f master &&
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git reset --hard first &&
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test_tick &&
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git cherry-pick --ff first..fourth &&
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git diff --quiet other &&
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git diff --quiet HEAD other &&
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check_head_equals fourth
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'
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test_expect_success 'cherry-pick -n first..fourth works' '
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git checkout -f master &&
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git reset --hard first &&
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test_tick &&
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git cherry-pick -n first..fourth &&
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git diff --quiet other &&
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git diff --cached --quiet other &&
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git diff --quiet HEAD first
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'
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test_expect_success 'revert first..fourth works' '
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git checkout -f master &&
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git reset --hard fourth &&
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test_tick &&
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git revert first..fourth &&
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git diff --quiet first &&
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git diff --cached --quiet first &&
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git diff --quiet HEAD first
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'
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test_expect_success 'revert ^first fourth works' '
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git checkout -f master &&
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git reset --hard fourth &&
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test_tick &&
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git revert ^first fourth &&
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git diff --quiet first &&
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git diff --cached --quiet first &&
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git diff --quiet HEAD first
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'
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test_expect_success 'revert fourth fourth~1 fourth~2 works' '
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git checkout -f master &&
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git reset --hard fourth &&
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test_tick &&
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git revert fourth fourth~1 fourth~2 &&
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git diff --quiet first &&
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git diff --cached --quiet first &&
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git diff --quiet HEAD first
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'
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test_expect_success 'cherry-pick -3 fourth works' '
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git checkout -f master &&
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git reset --hard first &&
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test_tick &&
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git cherry-pick -3 fourth &&
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git diff --quiet other &&
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git diff --quiet HEAD other &&
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check_head_differs_from fourth
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'
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test_expect_success 'cherry-pick --stdin works' '
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git checkout -f master &&
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git reset --hard first &&
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test_tick &&
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git rev-list --reverse first..fourth | git cherry-pick --stdin &&
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git diff --quiet other &&
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git diff --quiet HEAD other &&
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check_head_differs_from fourth
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'
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test_done
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