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authorJunio C Hamano <gitster@pobox.com>2012-03-12 22:46:32 (GMT)
committerJunio C Hamano <gitster@pobox.com>2012-03-12 22:46:32 (GMT)
commitfce8b5d82fadd0bc27b12ae91bf7ad74d6488e97 (patch)
treeb5e532b473b7bde254ad1218265369965191133c
parentf629c233e6dd72924ed2672db142708b71dc663e (diff)
parentb3f01ff29f7131e959bcfdfd004744d74d5fa319 (diff)
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Merge branch 'jc/maint-diff-patch-header' into maint
"git diff-index" and its friends at the plumbing level showed the "diff --git" header and nothing else for a path whose cached stat info is dirty without actual difference when asked to produce a patch. This was a longstanding bug that we could have fixed long time ago. By Junio C Hamano * jc/maint-diff-patch-header: diff -p: squelch "diff --git" header for stat-dirty paths t4011: illustrate "diff-index -p" on stat-dirty paths t4011: modernise style
-rw-r--r--diff.c2
-rwxr-xr-xt/t4011-diff-symlink.sh195
2 files changed, 111 insertions, 86 deletions
diff --git a/diff.c b/diff.c
index 05d0814..5388ded 100644
--- a/diff.c
+++ b/diff.c
@@ -2210,7 +2210,7 @@ static void builtin_diff(const char *name_a,
struct emit_callback ecbdata;
const struct userdiff_funcname *pe;
- if (!DIFF_XDL_TST(o, WHITESPACE_FLAGS) || must_show_header) {
+ if (must_show_header) {
fprintf(o->file, "%s", header.buf);
strbuf_reset(&header);
}
diff --git a/t/t4011-diff-symlink.sh b/t/t4011-diff-symlink.sh
index 408a19c..f0d5041 100755
--- a/t/t4011-diff-symlink.sh
+++ b/t/t4011-diff-symlink.sh
@@ -9,85 +9,110 @@ test_description='Test diff of symlinks.
. ./test-lib.sh
. "$TEST_DIRECTORY"/diff-lib.sh
-cat > expected << EOF
-diff --git a/frotz b/frotz
-new file mode 120000
-index 0000000..7c465af
---- /dev/null
-+++ b/frotz
-@@ -0,0 +1 @@
-+xyzzy
-\ No newline at end of file
-EOF
-
-test_expect_success SYMLINKS \
- 'diff new symlink' \
- 'ln -s xyzzy frotz &&
- git update-index &&
- tree=$(git write-tree) &&
- git update-index --add frotz &&
- GIT_DIFF_OPTS=--unified=0 git diff-index -M -p $tree > current &&
- compare_diff_patch current expected'
-
-test_expect_success SYMLINKS \
- 'diff unchanged symlink' \
- 'tree=$(git write-tree) &&
- git update-index frotz &&
- test -z "$(git diff-index --name-only $tree)"'
-
-cat > expected << EOF
-diff --git a/frotz b/frotz
-deleted file mode 120000
-index 7c465af..0000000
---- a/frotz
-+++ /dev/null
-@@ -1 +0,0 @@
--xyzzy
-\ No newline at end of file
-EOF
+test_expect_success SYMLINKS 'diff new symlink and file' '
+ cat >expected <<-\EOF &&
+ diff --git a/frotz b/frotz
+ new file mode 120000
+ index 0000000..7c465af
+ --- /dev/null
+ +++ b/frotz
+ @@ -0,0 +1 @@
+ +xyzzy
+ \ No newline at end of file
+ diff --git a/nitfol b/nitfol
+ new file mode 100644
+ index 0000000..7c465af
+ --- /dev/null
+ +++ b/nitfol
+ @@ -0,0 +1 @@
+ +xyzzy
+ EOF
+ ln -s xyzzy frotz &&
+ echo xyzzy >nitfol &&
+ git update-index &&
+ tree=$(git write-tree) &&
+ git update-index --add frotz nitfol &&
+ GIT_DIFF_OPTS=--unified=0 git diff-index -M -p $tree >current &&
+ compare_diff_patch expected current
+'
-test_expect_success SYMLINKS \
- 'diff removed symlink' \
- 'mv frotz frotz2 &&
- git diff-index -M -p $tree > current &&
- compare_diff_patch current expected'
+test_expect_success SYMLINKS 'diff unchanged symlink and file' '
+ tree=$(git write-tree) &&
+ git update-index frotz nitfol &&
+ test -z "$(git diff-index --name-only $tree)"
+'
-cat > expected << EOF
-diff --git a/frotz b/frotz
-EOF
+test_expect_success SYMLINKS 'diff removed symlink and file' '
+ cat >expected <<-\EOF &&
+ diff --git a/frotz b/frotz
+ deleted file mode 120000
+ index 7c465af..0000000
+ --- a/frotz
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -xyzzy
+ \ No newline at end of file
+ diff --git a/nitfol b/nitfol
+ deleted file mode 100644
+ index 7c465af..0000000
+ --- a/nitfol
+ +++ /dev/null
+ @@ -1 +0,0 @@
+ -xyzzy
+ EOF
+ mv frotz frotz2 &&
+ mv nitfol nitfol2 &&
+ git diff-index -M -p $tree >current &&
+ compare_diff_patch expected current
+'
-test_expect_success SYMLINKS \
- 'diff identical, but newly created symlink' \
- 'ln -s xyzzy frotz &&
- git diff-index -M -p $tree > current &&
- compare_diff_patch current expected'
+test_expect_success SYMLINKS 'diff identical, but newly created symlink and file' '
+ >expected &&
+ rm -f frotz nitfol &&
+ echo xyzzy >nitfol &&
+ test-chmtime +10 nitfol &&
+ ln -s xyzzy frotz &&
+ git diff-index -M -p $tree >current &&
+ compare_diff_patch expected current &&
-cat > expected << EOF
-diff --git a/frotz b/frotz
-index 7c465af..df1db54 120000
---- a/frotz
-+++ b/frotz
-@@ -1 +1 @@
--xyzzy
-\ No newline at end of file
-+yxyyz
-\ No newline at end of file
-EOF
+ >expected &&
+ git diff-index -M -p -w $tree >current &&
+ compare_diff_patch expected current
+'
-test_expect_success SYMLINKS \
- 'diff different symlink' \
- 'rm frotz &&
- ln -s yxyyz frotz &&
- git diff-index -M -p $tree > current &&
- compare_diff_patch current expected'
+test_expect_success SYMLINKS 'diff different symlink and file' '
+ cat >expected <<-\EOF &&
+ diff --git a/frotz b/frotz
+ index 7c465af..df1db54 120000
+ --- a/frotz
+ +++ b/frotz
+ @@ -1 +1 @@
+ -xyzzy
+ \ No newline at end of file
+ +yxyyz
+ \ No newline at end of file
+ diff --git a/nitfol b/nitfol
+ index 7c465af..df1db54 100644
+ --- a/nitfol
+ +++ b/nitfol
+ @@ -1 +1 @@
+ -xyzzy
+ +yxyyz
+ EOF
+ rm -f frotz &&
+ ln -s yxyyz frotz &&
+ echo yxyyz >nitfol &&
+ git diff-index -M -p $tree >current &&
+ compare_diff_patch expected current
+'
-test_expect_success SYMLINKS \
- 'diff symlinks with non-existing targets' \
- 'ln -s narf pinky &&
- ln -s take\ over brain &&
- test_must_fail git diff --no-index pinky brain > output 2> output.err &&
- grep narf output &&
- ! grep error output.err'
+test_expect_success SYMLINKS 'diff symlinks with non-existing targets' '
+ ln -s narf pinky &&
+ ln -s take\ over brain &&
+ test_must_fail git diff --no-index pinky brain >output 2>output.err &&
+ grep narf output &&
+ ! test -s output.err
+'
test_expect_success SYMLINKS 'setup symlinks with attributes' '
echo "*.bin diff=bin" >>.gitattributes &&
@@ -96,19 +121,19 @@ test_expect_success SYMLINKS 'setup symlinks with attributes' '
git add -N file.bin link.bin
'
-cat >expect <<'EOF'
-diff --git a/file.bin b/file.bin
-index e69de29..d95f3ad 100644
-Binary files a/file.bin and b/file.bin differ
-diff --git a/link.bin b/link.bin
-index e69de29..dce41ec 120000
---- a/link.bin
-+++ b/link.bin
-@@ -0,0 +1 @@
-+file.bin
-\ No newline at end of file
-EOF
test_expect_success SYMLINKS 'symlinks do not respect userdiff config by path' '
+ cat >expect <<-\EOF &&
+ diff --git a/file.bin b/file.bin
+ index e69de29..d95f3ad 100644
+ Binary files a/file.bin and b/file.bin differ
+ diff --git a/link.bin b/link.bin
+ index e69de29..dce41ec 120000
+ --- a/link.bin
+ +++ b/link.bin
+ @@ -0,0 +1 @@
+ +file.bin
+ \ No newline at end of file
+ EOF
git config diff.bin.binary true &&
git diff file.bin link.bin >actual &&
test_cmp expect actual