From 6de33a65c232597a91197dac36e683f0e78f4c95 Mon Sep 17 00:00:00 2001
From: Humza Shahid <humzasaur@gmail.com>
Date: Mon, 29 Sep 2025 22:03:36 +0100
Subject: [PATCH] fix minor type error introduced in line_gap.sml in last
 commit (was returning an integer instead of a char)

---
 src/line_gap.sml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/line_gap.sml b/src/line_gap.sml
index 4432edd..9b1abf1 100644
--- a/src/line_gap.sml
+++ b/src/line_gap.sml
@@ -2294,8 +2294,10 @@ struct
       raise Fail "not found"
 
   fun sub (findIdx, buffer: t) =
-    if findIdx < #idx buffer then 0
-    else subRight (findIdx, #idx buffer, #rightStrings buffer)
+    if findIdx < #idx buffer then
+      subLeft (findIdx, #idx buffer, #leftStrings buffer)
+    else
+      subRight (findIdx, #idx buffer, #rightStrings buffer)
 
   local
     fun consIfNotEmpty (s, acc) =