[PATCH v2 3/5] merge-recursive: clarify the rename_dir/RENAME_DIR meaning

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We had an enum of rename types which included RENAME_DIR; this name felt
misleading since it was not about an entire directory but was a status for
each individual file add that occurred within a renamed directory.

Since this type is for signifying that the files in question were being
renamed due to directory rename detection, rename this enum value to
RENAME_VIA_DIR.

Make a similar change to the conflict_rename_dir() function, and add a
comment to the top of that function explaining its purpose (it may not be
quite as obvious as for the other conflict_rename_*() functions).

Acked-by: Johannes Schindelin <Johannes.Schindelin@xxxxxx>
Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
 merge-recursive.c | 28 +++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

diff --git a/merge-recursive.c b/merge-recursive.c
index 01306c87eb..e2b0db0645 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -180,7 +180,7 @@ static int oid_eq(const struct object_id *a, const struct object_id *b)
 
 enum rename_type {
 	RENAME_NORMAL = 0,
-	RENAME_DIR,
+	RENAME_VIA_DIR,
 	RENAME_DELETE,
 	RENAME_ONE_FILE_TO_ONE,
 	RENAME_ONE_FILE_TO_TWO,
@@ -1224,11 +1224,17 @@ static int merge_file_one(struct merge_options *o,
 	return merge_file_1(o, &one, &a, &b, path, branch1, branch2, mfi);
 }
 
-static int conflict_rename_dir(struct merge_options *o,
-			       struct diff_filepair *pair,
-			       const char *rename_branch,
-			       const char *other_branch)
+static int conflict_rename_via_dir(struct merge_options *o,
+				   struct diff_filepair *pair,
+				   const char *rename_branch,
+				   const char *other_branch)
 {
+	/*
+	 * Handle file adds that need to be renamed due to directory rename
+	 * detection.  This differs from handle_rename_normal, because
+	 * there is no content merge to do; just move the file into the
+	 * desired final location.
+	 */
 	const struct diff_filespec *dest = pair->two;
 
 	if (!o->call_depth && would_lose_untracked(dest->path)) {
@@ -2498,7 +2504,7 @@ static int process_renames(struct merge_options *o,
 
 			if (oid_eq(&src_other.oid, &null_oid) &&
 			    ren1->add_turned_into_rename) {
-				setup_rename_conflict_info(RENAME_DIR,
+				setup_rename_conflict_info(RENAME_VIA_DIR,
 							   ren1->pair,
 							   NULL,
 							   branch1,
@@ -2944,12 +2950,12 @@ static int process_entry(struct merge_options *o,
 							     b_oid, b_mode,
 							     conflict_info);
 			break;
-		case RENAME_DIR:
+		case RENAME_VIA_DIR:
 			clean_merge = 1;
-			if (conflict_rename_dir(o,
-						conflict_info->pair1,
-						conflict_info->branch1,
-						conflict_info->branch2))
+			if (conflict_rename_via_dir(o,
+						    conflict_info->pair1,
+						    conflict_info->branch1,
+						    conflict_info->branch2))
 				clean_merge = -1;
 			break;
 		case RENAME_DELETE:
-- 
2.17.0.847.g20b8963732




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