fix_non_ascii.txt

diff --git a/src/backend/optimizer/plan/rpr.c b/src/backend/optimizer/plan/rpr.c
index 230c545a631..50043c416c6 100644
--- a/src/backend/optimizer/plan/rpr.c
+++ b/src/backend/optimizer/plan/rpr.c
@@ -1379,7 +1379,7 @@ isUnboundedStart(RPRPattern *pattern, RPRElemIdx idx, RPRDepth parentDepth)
  *
  * Context absorption eliminates redundant match searches by absorbing
  * newer contexts that cannot produce longer matches than older contexts.
- * This achieves O(n²) → O(n) performance improvement.
+ * This achieves O(n^2) -> O(n) performance improvement.
  *
  * Only greedy unbounded quantifiers at pattern start can be absorbable.
  * Reluctant quantifiers are excluded because they don't maintain monotonic