From 30d005c02014680403b5d35ef274047ab91fa5bd Mon Sep 17 00:00:00 2001 From: Jeff King Date: Fri, 19 May 2017 08:59:34 -0400 Subject: [PATCH] diff: use blob path for blob/file diffs When we diff a blob against a working tree file like: git diff HEAD:Makefile Makefile we always use the working tree filename for both sides of the diff. In most cases that's fine, as the two would be the same anyway, as above. And until recently, we used the "name" for the blob, not the path, which would have the messy "HEAD:" on the beginning. But when they don't match, like: git diff HEAD:old_path new_path it makes sense to show both names. This patch uses the blob's path field if it's available, and otherwise falls back to using the filename (in preference to the blob's name, which is likely to be garbage like a raw sha1). Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- builtin/diff.c | 3 ++- t/t4063-diff-blobs.sh | 7 ++++++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/builtin/diff.c b/builtin/diff.c index 1a1149eed44a27..5e7c6428c91203 100644 --- a/builtin/diff.c +++ b/builtin/diff.c @@ -90,7 +90,8 @@ static int builtin_diff_b_f(struct rev_info *revs, blob[0]->mode, canon_mode(st.st_mode), &blob[0]->item->oid, &null_oid, 1, 0, - path, path); + blob[0]->path ? blob[0]->path : path, + path); diffcore_std(&revs->diffopt); diff_flush(&revs->diffopt); return 0; diff --git a/t/t4063-diff-blobs.sh b/t/t4063-diff-blobs.sh index 80ce033ab629dc..bc69e26c524b7c 100755 --- a/t/t4063-diff-blobs.sh +++ b/t/t4063-diff-blobs.sh @@ -81,11 +81,16 @@ test_expect_success 'diff blob against file' ' test_expect_success 'index of blob-file diff' ' check_index $sha1_one $sha1_two ' -test_expect_failure 'blob-file diff uses filename as paths' ' +test_expect_success 'blob-file diff uses filename as paths' ' check_paths one two ' test_expect_success FILEMODE 'blob-file diff shows mode change' ' check_mode 100644 100755 ' +test_expect_success 'blob-file diff prefers filename to sha1' ' + run_diff $sha1_one two && + check_paths two two +' + test_done