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-rw-r--r--diff.c5
-rwxr-xr-xt/t4020-diff-external.sh30
2 files changed, 32 insertions, 3 deletions
diff --git a/diff.c b/diff.c
index e8006666d8..1cd4672d03 100644
--- a/diff.c
+++ b/diff.c
@@ -2845,8 +2845,9 @@ static struct diff_tempfile *prepare_temp_file(const char *name,
remove_tempfile_installed = 1;
}
- if (!one->sha1_valid ||
- reuse_worktree_file(name, one->sha1, 1)) {
+ if (!S_ISGITLINK(one->mode) &&
+ (!one->sha1_valid ||
+ reuse_worktree_file(name, one->sha1, 1))) {
struct stat st;
if (lstat(name, &st) < 0) {
if (errno == ENOENT)
diff --git a/t/t4020-diff-external.sh b/t/t4020-diff-external.sh
index bcae35ac1c..044620186d 100755
--- a/t/t4020-diff-external.sh
+++ b/t/t4020-diff-external.sh
@@ -226,12 +226,13 @@ keep_only_cr () {
}
test_expect_success 'external diff with autocrlf = true' '
- git config core.autocrlf true &&
+ test_config core.autocrlf true &&
GIT_EXTERNAL_DIFF=./fake-diff.sh git diff &&
test $(wc -l < crlfed.txt) = $(cat crlfed.txt | keep_only_cr | wc -c)
'
test_expect_success 'diff --cached' '
+ test_config core.autocrlf true &&
git add file &&
git update-index --assume-unchanged file &&
echo second >file &&
@@ -239,4 +240,31 @@ test_expect_success 'diff --cached' '
test_cmp "$TEST_DIRECTORY"/t4020/diff.NUL actual
'
+test_expect_success 'clean up crlf leftovers' '
+ git update-index --no-assume-unchanged file &&
+ rm -f file* &&
+ git reset --hard
+'
+
+test_expect_success 'submodule diff' '
+ git init sub &&
+ ( cd sub && test_commit sub1 ) &&
+ git add sub &&
+ test_tick &&
+ git commit -m "add submodule" &&
+ ( cd sub && test_commit sub2 ) &&
+ write_script gather_pre_post.sh <<-\EOF &&
+ echo "$1 $4" # path, mode
+ cat "$2" # old file
+ cat "$5" # new file
+ EOF
+ GIT_EXTERNAL_DIFF=./gather_pre_post.sh git diff >actual &&
+ cat >expected <<-EOF &&
+ sub 160000
+ Subproject commit $(git rev-parse HEAD:sub)
+ Subproject commit $(cd sub && git rev-parse HEAD)
+ EOF
+ test_cmp expected actual
+'
+
test_done