This option is supposed to fix the diff of "diff-files" (not reporting
ita entries as new files) and "diff-index --cached <tree>" ( showing
ita entries as present in the index with empty content) but not
"diff-index <tree>".
When --ita-invisible-in-index is set on "git diff-index <tree>",
unpack_trees() will eventually call oneway_diff() on the ita entry
with the same code flow as "diff-index --cached <tree>". We want to
ignore the ita entry for "diff-index --cached <tree>" but not
"diff-index <tree>" since the latter will examine and produce a diff
based on worktree entry's (real) content, not ita index entry's
(empty) content.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
diff-lib.c | 8 ++++++--
t/t2203-add-intent.sh | 2 +-
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/diff-lib.c b/diff-lib.c
index 104f954a25..a9f38eb5a3 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -389,8 +389,12 @@ static void do_oneway_diff(struct unpack_trees_options *o,
struct rev_info *revs = o->unpack_data;
int match_missing, cached;
- /* i-t-a entries do not actually exist in the index */
- if (revs->diffopt.ita_invisible_in_index &&
+ /*
+ * i-t-a entries do not actually exist in the index (if we're
+ * looking at its content)
+ */
+ if (o->index_only &&
+ revs->diffopt.ita_invisible_in_index &&
idx && ce_intent_to_add(idx)) {
idx = NULL;
if (!tree)
diff --git a/t/t2203-add-intent.sh b/t/t2203-add-intent.sh
index 78236dc7d8..3ab07cb404 100755
--- a/t/t2203-add-intent.sh
+++ b/t/t2203-add-intent.sh
@@ -70,7 +70,7 @@ test_expect_success 'i-t-a entry is simply ignored' '
git commit -m second &&
test $(git ls-tree HEAD -- nitfol | wc -l) = 0 &&
test $(git diff --name-only HEAD -- nitfol | wc -l) = 1 &&
- test $(git diff --name-only --ita-invisible-in-index HEAD -- nitfol | wc -l) = 0 &&
+ test $(git diff --name-only --ita-invisible-in-index HEAD -- nitfol | wc -l) = 1 &&
test $(git diff --name-only --ita-invisible-in-index -- nitfol | wc -l) = 1
'
--
2.17.0.705.g3525833791
