From 6d49de414f9dc7a94503a3798dd745971669cebe Mon Sep 17 00:00:00 2001 From: Max Kirillov Date: Sun, 29 Jun 2014 01:04:45 +0300 Subject: [PATCH 1/2] t6023-merge-file.sh: fix and mark as broken invalid tests Tests "merge without conflict (missing LF at EOF" and "merge result added missing LF" are meaningless - the first one is identical to "merge without conflict" and the second compares results of those identical tests, which are always same. This has been so since their addition in ba1f5f3537. Probably "new4.txt" was meant to be used instead of "new2.txt". Unfortunately, the current merge-file breaks with new4 - conflict is reported. They also fail at that revision if fixed. Fix the file reference to "new4.txt" and mark the tests as failing - they look like legitimate expectations, just not satisfied at time being. Signed-off-by: Max Kirillov Acked-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- t/t6023-merge-file.sh | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/t/t6023-merge-file.sh b/t/t6023-merge-file.sh index 432f086c06..3115285c8c 100755 --- a/t/t6023-merge-file.sh +++ b/t/t6023-merge-file.sh @@ -77,10 +77,10 @@ test_expect_success "merge without conflict (--quiet)" \ "git merge-file --quiet test.txt orig.txt new2.txt" cp new1.txt test2.txt -test_expect_success "merge without conflict (missing LF at EOF)" \ - "git merge-file test2.txt orig.txt new2.txt" +test_expect_failure "merge without conflict (missing LF at EOF)" \ + "git merge-file test2.txt orig.txt new4.txt" -test_expect_success "merge result added missing LF" \ +test_expect_failure "merge result added missing LF" \ "test_cmp test.txt test2.txt" cp test.txt backup.txt From ba311807f8408761a48d4cd596259ca30a4375f2 Mon Sep 17 00:00:00 2001 From: Max Kirillov Date: Sun, 29 Jun 2014 01:04:46 +0300 Subject: [PATCH 2/2] git-merge-file: do not add LF at EOF while applying unrelated change If 'current-file' does not contain LF at EOF, and change between 'base-file' and 'other-file' does not change any line close to EOF, the 3-way merge should not add LF to EOF. This is what 'diff3 -m' does, and seems to be a reasonable expectation. The change which introduced the behavior is cd1d61c44f. It always calls function xdl_recs_copy() for sides with add_nl == 1. In fact, it looks like the only case when this is needed is when 2 files are being union-merged, and they do not have LF at EOF (strictly speaking, the first of them). Add tests: * "merge without conflict (missing LF at EOF, away from change in the other file)" and "merge does not add LF away of change", to demonstrate the changed behavior. * "conflict at EOF without LF resolved by --union", to verify that the union-merge at the end inerts newline between versions. * some more tests which I felt like not covering the functionality well Signed-off-by: Max Kirillov Acked-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- t/t6023-merge-file.sh | 85 +++++++++++++++++++++++++++++++++++++++++++ xdiff/xmerge.c | 4 +- 2 files changed, 87 insertions(+), 2 deletions(-) diff --git a/t/t6023-merge-file.sh b/t/t6023-merge-file.sh index 3115285c8c..3758961765 100755 --- a/t/t6023-merge-file.sh +++ b/t/t6023-merge-file.sh @@ -83,6 +83,23 @@ test_expect_failure "merge without conflict (missing LF at EOF)" \ test_expect_failure "merge result added missing LF" \ "test_cmp test.txt test2.txt" +cp new4.txt test3.txt +test_expect_success "merge without conflict (missing LF at EOF, away from change in the other file)" \ + "git merge-file --quiet test3.txt new2.txt new3.txt" + +cat > expect.txt << EOF +DOMINUS regit me, +et nihil mihi deerit. +In loco pascuae ibi me collocavit, +super aquam refectionis educavit me; +animam meam convertit, +deduxit me super semitas jusitiae, +EOF +printf "propter nomen suum." >> expect.txt + +test_expect_success "merge does not add LF away of change" \ + "test_cmp test3.txt expect.txt" + cp test.txt backup.txt test_expect_success "merge with conflicts" \ "test_must_fail git merge-file test.txt orig.txt new3.txt" @@ -107,6 +124,55 @@ EOF test_expect_success "expected conflict markers" "test_cmp test.txt expect.txt" cp backup.txt test.txt + +cat > expect.txt << EOF +Dominus regit me, et nihil mihi deerit. +In loco pascuae ibi me collocavit, +super aquam refectionis educavit me; +animam meam convertit, +deduxit me super semitas jusitiae, +propter nomen suum. +Nam et si ambulavero in medio umbrae mortis, +non timebo mala, quoniam tu mecum es: +virga tua et baculus tuus ipsa me consolata sunt. +EOF +test_expect_success "merge conflicting with --ours" \ + "git merge-file --ours test.txt orig.txt new3.txt && test_cmp test.txt expect.txt" +cp backup.txt test.txt + +cat > expect.txt << EOF +DOMINUS regit me, +et nihil mihi deerit. +In loco pascuae ibi me collocavit, +super aquam refectionis educavit me; +animam meam convertit, +deduxit me super semitas jusitiae, +propter nomen suum. +Nam et si ambulavero in medio umbrae mortis, +non timebo mala, quoniam tu mecum es: +virga tua et baculus tuus ipsa me consolata sunt. +EOF +test_expect_success "merge conflicting with --theirs" \ + "git merge-file --theirs test.txt orig.txt new3.txt && test_cmp test.txt expect.txt" +cp backup.txt test.txt + +cat > expect.txt << EOF +Dominus regit me, et nihil mihi deerit. +DOMINUS regit me, +et nihil mihi deerit. +In loco pascuae ibi me collocavit, +super aquam refectionis educavit me; +animam meam convertit, +deduxit me super semitas jusitiae, +propter nomen suum. +Nam et si ambulavero in medio umbrae mortis, +non timebo mala, quoniam tu mecum es: +virga tua et baculus tuus ipsa me consolata sunt. +EOF +test_expect_success "merge conflicting with --union" \ + "git merge-file --union test.txt orig.txt new3.txt && test_cmp test.txt expect.txt" +cp backup.txt test.txt + test_expect_success "merge with conflicts, using -L" \ "test_must_fail git merge-file -L 1 -L 2 test.txt orig.txt new3.txt" @@ -260,4 +326,23 @@ test_expect_success 'marker size' ' test_cmp expect actual ' +printf "line1\nline2\nline3" >nolf-orig.txt +printf "line1\nline2\nline3x" >nolf-diff1.txt +printf "line1\nline2\nline3y" >nolf-diff2.txt + +test_expect_success 'conflict at EOF without LF resolved by --ours' \ + 'git merge-file -p --ours nolf-diff1.txt nolf-orig.txt nolf-diff2.txt >output.txt && + printf "line1\nline2\nline3x" >expect.txt && + test_cmp expect.txt output.txt' + +test_expect_success 'conflict at EOF without LF resolved by --theirs' \ + 'git merge-file -p --theirs nolf-diff1.txt nolf-orig.txt nolf-diff2.txt >output.txt && + printf "line1\nline2\nline3y" >expect.txt && + test_cmp expect.txt output.txt' + +test_expect_success 'conflict at EOF without LF resolved by --union' \ + 'git merge-file -p --union nolf-diff1.txt nolf-orig.txt nolf-diff2.txt >output.txt && + printf "line1\nline2\nline3x\nline3y" >expect.txt && + test_cmp expect.txt output.txt' + test_done diff --git a/xdiff/xmerge.c b/xdiff/xmerge.c index 9e13b25abc..625198e058 100644 --- a/xdiff/xmerge.c +++ b/xdiff/xmerge.c @@ -245,11 +245,11 @@ static int xdl_fill_merge_buffer(xdfenv_t *xe1, const char *name1, dest ? dest + size : NULL); /* Postimage from side #1 */ if (m->mode & 1) - size += xdl_recs_copy(xe1, m->i1, m->chg1, 1, + size += xdl_recs_copy(xe1, m->i1, m->chg1, (m->mode & 2), dest ? dest + size : NULL); /* Postimage from side #2 */ if (m->mode & 2) - size += xdl_recs_copy(xe2, m->i2, m->chg2, 1, + size += xdl_recs_copy(xe2, m->i2, m->chg2, 0, dest ? dest + size : NULL); } else continue;