From a6a1cf383ecdf14634c39b6ff76d439a35409835 Mon Sep 17 00:00:00 2001
From: kenji yoshida <6b656e6a69@gmail.com>
Date: Fri, 20 Mar 2026 09:14:04 +0900
Subject: [PATCH] [2.x] refactor: Update EscHelpers.scala (#8928)

---
 .../src/main/scala/sbt/internal/util/EscHelpers.scala    | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/internal/util-logging/src/main/scala/sbt/internal/util/EscHelpers.scala b/internal/util-logging/src/main/scala/sbt/internal/util/EscHelpers.scala
index ca362721b..6ea6e5092 100644
--- a/internal/util-logging/src/main/scala/sbt/internal/util/EscHelpers.scala
+++ b/internal/util-logging/src/main/scala/sbt/internal/util/EscHelpers.scala
@@ -99,7 +99,6 @@ object EscHelpers {
     var index = 0
     var state = 0
     val digit = new ArrayBuffer[Byte]
-    var leftDigit = -1
     while (i < bytes.length) {
       bytes(i) match {
         case 27 => state = esc
@@ -111,7 +110,7 @@ object EscHelpers {
           state = 0
           index = index - 1
         case b if state == csi =>
-          leftDigit = Try(new String(digit.toArray).toInt).getOrElse(0)
+          val leftDigit = Try(new String(digit.toArray).toInt).getOrElse(0)
           state = 0
           b.toChar match {
             case 'D' => index = math.max(index - leftDigit, 0)
@@ -150,7 +149,6 @@ object EscHelpers {
     var state = 0
     var limit = 0
     val digit = new ArrayBuffer[Byte]
-    var leftDigit = -1
     var escIndex = -1
     bytes.foreach { b =>
       if (index < res.length) res(index) = b
@@ -169,7 +167,7 @@ object EscHelpers {
           state = 0
           index = math.max(index - 1, 0)
         case b if state == csi =>
-          leftDigit = Try(new String(digit.toArray).toInt).getOrElse(0)
+          val leftDigit = Try(new String(digit.toArray).toInt).getOrElse(0)
           state = 0
           b.toChar match {
             case 'h' | 'A' | 'B' | 'C' | 'D' | 'E' | 'F' | 'J' | 'K' =>
@@ -206,7 +204,6 @@ object EscHelpers {
     var state = 0
     var limit = 0
     val digit = new ArrayBuffer[Byte]
-    var leftDigit = -1
     bytes.foreach {
       case 27 => state = esc
       case b if (state == esc || state == csi) && b >= 48 && b < 58 =>
@@ -217,7 +214,7 @@ object EscHelpers {
         state = 0
         index = math.max(index - 1, 0)
       case b if state == csi =>
-        leftDigit = Try(new String(digit.toArray).toInt).getOrElse(0)
+        val leftDigit = Try(new String(digit.toArray).toInt).getOrElse(0)
         state = 0
         b.toChar match {
           case 'h' => index = math.max(index - 1, 0)