From aba4727281612c3e24914691727e11e1f44a9aac Mon Sep 17 00:00:00 2001 From: Thomas Rast Date: Sun, 16 Feb 2014 17:52:34 +0100 Subject: [PATCH] diff: do not reuse_worktree_file for submodules MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The GIT_EXTERNAL_DIFF calling code attempts to reuse existing worktree files for the worktree side of diffs, for performance reasons. However, that code also tries to do the same with submodules. This results in calls to $GIT_EXTERNAL_DIFF where the old-file is a file of the form "Submodule commit $sha1", but the new-file is a directory in the worktree. Fix it by never reusing a worktree "file" in the submodule case. Reported-by: Grégory Pakosz Signed-off-by: Thomas Rast Signed-off-by: Junio C Hamano --- diff.c | 5 +++-- t/t4020-diff-external.sh | 30 +++++++++++++++++++++++++++++- 2 files changed, 32 insertions(+), 3 deletions(-) diff --git a/diff.c b/diff.c index 266112ca61..a96992a1bd 100644 --- a/diff.c +++ b/diff.c @@ -2842,8 +2842,9 @@ 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 2e7d73f090..295a563496 100755 --- a/t/t4020-diff-external.sh +++ b/t/t4020-diff-external.sh @@ -213,12 +213,13 @@ 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) = $(cat crlfed.txt | keep_only_cr | wc -c) ' test_expect_success 'diff --cached' ' + test_config core.autocrlf true && git add file && git update-index --assume-unchanged file && echo second >file && @@ -226,4 +227,31 @@ test_expect_success 'diff --cached' ' test_cmp "$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