From 405dba87151425d0f85b98e2a521b8bdfcd063a0 Mon Sep 17 00:00:00 2001
From: Jorge Vicente Cantero <jorgevc@fastmail.es>
Date: Mon, 20 Apr 2020 17:00:20 +0200
Subject: [PATCH 1/3] Use `StringBuilder` in `AnsiColors`

Fixes https://github.com/scalameta/munit/issues/108
---
 .../src/main/scala/munit/internal/console/AnsiColors.scala    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala b/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala
index 210134c2..8b173693 100644
--- a/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala
+++ b/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala
@@ -23,7 +23,7 @@ object AnsiColors {
     if (s == null) {
       null
     } else {
-      var r: String = ""
+      var r: StringBuilder = new StringBuilder()
       val len = s.length
       var i = 0
       while (i < len) {
@@ -36,7 +36,7 @@ object AnsiColors {
         }
         i += 1
       }
-      r
+      r.mkString
     }
   }
 

From 6b6fd95b58f82786ff40e0d65c00eb05ff406f92 Mon Sep 17 00:00:00 2001
From: Jorge <jorge@vican.me>
Date: Mon, 20 Apr 2020 17:48:08 +0200
Subject: [PATCH 2/3] Update AnsiColors.scala

---
 .../src/main/scala/munit/internal/console/AnsiColors.scala      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala b/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala
index 8b173693..0f0ebd74 100644
--- a/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala
+++ b/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala
@@ -23,7 +23,7 @@ object AnsiColors {
     if (s == null) {
       null
     } else {
-      var r: StringBuilder = new StringBuilder()
+      val r = new StringBuilder()
       val len = s.length
       var i = 0
       while (i < len) {

From e367f1a866b3680ae303eb2a5bb962229cc18cd7 Mon Sep 17 00:00:00 2001
From: Olafur Pall Geirsson <lgeirsson@twitter.com>
Date: Mon, 20 Apr 2020 16:13:26 +0000
Subject: [PATCH 3/3] Use line-by-line translation of Ansi.java

---
 .../src/main/scala/munit/internal/console/AnsiColors.scala  | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala b/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala
index 0f0ebd74..dad6004d 100644
--- a/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala
+++ b/munit/shared/src/main/scala/munit/internal/console/AnsiColors.scala
@@ -23,8 +23,8 @@ object AnsiColors {
     if (s == null) {
       null
     } else {
-      val r = new StringBuilder()
       val len = s.length
+      val r = new java.lang.StringBuilder(len)
       var i = 0
       while (i < len) {
         val c = s.charAt(i)
@@ -32,11 +32,11 @@ object AnsiColors {
           i += 1
           while (i < len && s.charAt(i) != 'm') i += 1
         } else {
-          r += c
+          r.append(c)
         }
         i += 1
       }
-      r.mkString
+      r.toString()
     }
   }