diff --git a/diff.c b/diff.c
index 94fdb57927..77ef56a6e4 100644
--- a/diff.c
+++ b/diff.c
@@ -4734,6 +4734,17 @@ void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc)
 		warning(_(rename_limit_advice), varname, needed);
 }
 
+static void diff_flush_patch_all_file_pairs(struct diff_options *o)
+{
+	int i;
+	struct diff_queue_struct *q = &diff_queued_diff;
+	for (i = 0; i < q->nr; i++) {
+		struct diff_filepair *p = q->queue[i];
+		if (check_pair_status(p))
+			diff_flush_patch(p, o);
+	}
+}
+
 void diff_flush(struct diff_options *options)
 {
 	struct diff_queue_struct *q = &diff_queued_diff;
@@ -4826,11 +4837,7 @@ void diff_flush(struct diff_options *options)
 			}
 		}
 
-		for (i = 0; i < q->nr; i++) {
-			struct diff_filepair *p = q->queue[i];
-			if (check_pair_status(p))
-				diff_flush_patch(p, options);
-		}
+		diff_flush_patch_all_file_pairs(options);
 	}
 
 	if (output_format & DIFF_FORMAT_CALLBACK)