[PATCH 34/37] merge_content(): Check whether D/F conflicts are still present

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If all the paths below some directory involved in a D/F conflict were not
removed during the rest of the merge, then the contents of the file whose
path conflicted needs to be recorded in file with an alternative filename.

Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
 merge-recursive.c       |   22 ++++++++++++++++++++--
 t/t6022-merge-rename.sh |    8 ++++----
 2 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/merge-recursive.c b/merge-recursive.c
index 3cc5886..a971d59 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1193,6 +1193,8 @@ static int merge_content(struct merge_options *o,
 	const char *reason = "content";
 	struct merge_file_info mfi;
 	struct diff_filespec one, a, b;
+	struct stat st;
+	unsigned df_conflict_remains = 0;
 
 	if (!o_sha) {
 		reason = "add/add";
@@ -1207,7 +1209,13 @@ static int merge_content(struct merge_options *o,
 	b.mode = b_mode;
 
 	mfi = merge_file(o, &one, &a, &b, o->branch1, o->branch2);
-	if (mfi.clean && sha_eq(mfi.sha, a_sha) && mfi.mode == a.mode)
+	if (df_rename_conflict_branch &&
+	    lstat(path, &st) == 0 && S_ISDIR(st.st_mode)) {
+		df_conflict_remains = 1;
+	}
+
+	if (mfi.clean && !df_conflict_remains &&
+	    sha_eq(mfi.sha, a_sha) && mfi.mode == a.mode)
 		output(o, 3, "Skipped %s (merged same as existing)", path);
 	else
 		output(o, 2, "Auto-merging %s", path);
@@ -1219,7 +1227,17 @@ static int merge_content(struct merge_options *o,
 				reason, path);
 	}
 
-	update_file(o, mfi.clean, mfi.sha, mfi.mode, path);
+	if (df_conflict_remains) {
+		const char *new_path;
+		update_file_flags(o, mfi.sha, mfi.mode, path,
+				  o->call_depth || mfi.clean, 0);
+		new_path = unique_path(o, path, df_rename_conflict_branch);
+		mfi.clean = 0;
+		output(o, 1, "Adding as %s instead", new_path);
+		update_file_flags(o, mfi.sha, mfi.mode, new_path, 0, 1);
+	} else {
+		update_file(o, mfi.clean, mfi.sha, mfi.mode, path);
+	}
 	return mfi.clean;
 
 }
diff --git a/t/t6022-merge-rename.sh b/t/t6022-merge-rename.sh
index 0b67002..422092e 100755
--- a/t/t6022-merge-rename.sh
+++ b/t/t6022-merge-rename.sh
@@ -394,7 +394,7 @@ test_expect_success 'Rename+D/F conflict; renamed file merges + dir not in way'
 	test_cmp expected dir
 '
 
-test_expect_failure 'Rename+D/F conflict; renamed file merges but dir in way' '
+test_expect_success 'Rename+D/F conflict; renamed file merges but dir in way' '
 	git reset --hard &&
 	rm -rf dir~* &&
 	git checkout -q renamed-file-has-no-conflicts^0 &&
@@ -415,7 +415,7 @@ test_expect_failure 'Rename+D/F conflict; renamed file merges but dir in way' '
 	test_cmp expected dir~HEAD
 '
 
-test_expect_failure 'Same as previous, but merged other way' '
+test_expect_success 'Same as previous, but merged other way' '
 	git reset --hard &&
 	rm -rf dir~* &&
 	git checkout -q dir-in-way^0 &&
@@ -471,7 +471,7 @@ test_expect_success 'Rename+D/F conflict; renamed file cannot merge, dir not in
 	test_cmp expected dir
 '
 
-test_expect_failure 'Rename+D/F conflict; renamed file cannot merge and dir in the way' '
+test_expect_success 'Rename+D/F conflict; renamed file cannot merge and dir in the way' '
 	modify s/dir-not-in-way/dir-in-way/ expected &&
 
 	git reset --hard &&
@@ -509,7 +509,7 @@ cat >expected <<\EOF &&
 >>>>>>> renamed-file-has-conflicts
 EOF
 
-test_expect_failure 'Same as previous, but merged other way' '
+test_expect_success 'Same as previous, but merged other way' '
 	git reset --hard &&
 	rm -rf dir~* &&
 	git checkout -q dir-in-way^0 &&
-- 
1.7.3.271.g16009

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