From: Johannes Schindelin <johannes.schindelin@xxxxxx> In `run_diff_files()`, files that have been staged with the intention to add are queued without a valid OID in the `diff_filepair`. When the output mode is, say, `DIFF_FORMAT_PATCH`, the `diff_fill_oid_info()` function, called from `run_diff()`, will remedy that situation by reading the file contents from disk. However, when the output mode is `DIFF_FORMAT_RAW`, that does not hold true, and the output will contain a bogus OID (and the flag `M` for "modified" instead of the correct `A` for "added"). As a consequence, `git difftool -d` (which relies on `git diff-files --raw`'s output) does not work correctly. Let's fix this specifically by imitating `diff_fill_oid_info()`. Note: we can only do that for diff formats that do not actually need the file contents, such as `DIFF_FORMAT_PATCH`: `run_diff()` would try to read the blob contents, but that blob might not have been written to Git's object database. This fixes https://github.com/git-for-windows/git/issues/2677 Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx> --- diff-lib.c | 14 ++++++++++++++ t/t4000-diff-format.sh | 10 ++++++++++ 2 files changed, 24 insertions(+) diff --git a/diff-lib.c b/diff-lib.c index 15bb45776e4..4af8f811ae8 100644 --- a/diff-lib.c +++ b/diff-lib.c @@ -223,6 +223,20 @@ int run_diff_files(struct rev_info *revs, unsigned int option) the_hash_algo->empty_blob, 0, ce->name, 0); continue; + } else if (ce_intent_to_add(ce) && + !(revs->diffopt.output_format & + ~(DIFF_FORMAT_RAW | DIFF_FORMAT_NAME_STATUS))) { + struct object_id oid; + int ret = lstat(ce->name, &st); + + if (ret < 0) + oidclr(&oid); + else + ret = index_path(istate, &oid, + ce->name, &st, 0); + diff_addremove(&revs->diffopt, '+', ce->ce_mode, + &oid, ret >= 0, ce->name, 0); + continue; } changed = match_stat_with_submodule(&revs->diffopt, ce, &st, diff --git a/t/t4000-diff-format.sh b/t/t4000-diff-format.sh index e5116a76a1c..48ff4e250b5 100755 --- a/t/t4000-diff-format.sh +++ b/t/t4000-diff-format.sh @@ -89,4 +89,14 @@ test_expect_success 'git diff-files --patch --no-patch does not show the patch' test_must_be_empty err ' +test_expect_success 'git diff-files --raw handles intent-to-add files correctly' ' + echo 123 >ita && + git add -N ita && + printf ":000000 100644 %s %s A\\tita\n" \ + $ZERO_OID $(git hash-object --stdin <ita) >expect && + git diff-files --raw ita >actual && + test_cmp expect actual +' + + test_done -- gitgitgadget
