From 68be55342d7e9a9cf9c9f65962d3970a8dd39e4c Mon Sep 17 00:00:00 2001
From: Humza Shahid <humzasaur@gmail.com>
Date: Sat, 7 Feb 2026 01:40:43 +0000
Subject: [PATCH] fix failing test for 'PersistentVector.extendExistingMatch'.
 The test itself was wrong, as it forgets that lists are 0-indexed.

---
 test/persistent-vector-tests.sml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/persistent-vector-tests.sml b/test/persistent-vector-tests.sml
index 0dfeab2..7de91a5 100644
--- a/test/persistent-vector-tests.sml
+++ b/test/persistent-vector-tests.sml
@@ -608,7 +608,8 @@ struct
              (* assert *)
              val outputList = PersistentVector.toList pv
              val expectedOutput =
-               [ {start = 1, finish = 1}
+               [ {start = 0, finish = 0}
+               , {start = 1, finish = 1}
                , {start = 2, finish = 2}
                , {start = 3, finish = 3}
                , {start = 4, finish = 4}