Merge branch 'jk/no-textconv-symlink'

* jk/no-textconv-symlink:
diff: don't use pathname-based diff drivers for symlinks

diff --git a/diff.c b/diff.c
index d1c6b91982ccbb6489c57c9bbddb692c7b4b7ca3..c8e43664fb8c01ecba9cf74b3f9cbf5e8c1cbaea 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -1771,8 +1771,14 @@ static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two, char *pre
 
 static void diff_filespec_load_driver(struct diff_filespec *one)
 {
-       if (!one->driver)
+       /* Use already-loaded driver */
+       if (one->driver)
+               return;
+
+       if (S_ISREG(one->mode))
                one->driver = userdiff_find_by_path(one->path);
+
+       /* Fallback to default settings */
        if (!one->driver)
                one->driver = userdiff_find_by_name("default");
 }
@@ -1820,8 +1826,7 @@ struct userdiff_driver *get_textconv(struct diff_filespec *one)
 {
        if (!DIFF_FILE_VALID(one))
                return NULL;
-       if (!S_ISREG(one->mode))
-               return NULL;
+
        diff_filespec_load_driver(one);
        if (!one->driver->textconv)
                return NULL;

diff --git a/t/t4011-diff-symlink.sh b/t/t4011-diff-symlink.sh
index 6f6948925fed1b99f37ec94dd7e4aa2075eb6bb7..408a19c4c258da9b7860edffea314b181e273edf 100755 (executable)
--- a/t/t4011-diff-symlink.sh
+++ b/t/t4011-diff-symlink.sh
@@ -88,4 +88,30 @@ test_expect_success SYMLINKS \
     test_must_fail git diff --no-index pinky brain > output 2> output.err &&
     grep narf output &&
     ! grep error output.err'
+
+test_expect_success SYMLINKS 'setup symlinks with attributes' '
+       echo "*.bin diff=bin" >>.gitattributes &&
+       echo content >file.bin &&
+       ln -s file.bin link.bin &&
+       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' '
+       git config diff.bin.binary true &&
+       git diff file.bin link.bin >actual &&
+       test_cmp expect actual
+'
+
 test_done