From 7f9ea6279e8d7dc6750df50975d9d366c7ab9b42 Mon Sep 17 00:00:00 2001
From: Nicolas Stucki <nicolas.stucki@gmail.com>
Date: Mon, 11 Sep 2017 11:31:50 +0200
Subject: [PATCH] Avoid pattern match warning

---
 compiler/src/dotty/tools/repl/terminal/Utils.scala | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/compiler/src/dotty/tools/repl/terminal/Utils.scala b/compiler/src/dotty/tools/repl/terminal/Utils.scala
index dad7dc61dd5f..ddf234b2bac8 100644
--- a/compiler/src/dotty/tools/repl/terminal/Utils.scala
+++ b/compiler/src/dotty/tools/repl/terminal/Utils.scala
@@ -199,8 +199,9 @@ object FrontEndUtils {
               .grouped(math.ceil(snippets.length * 1.0 / columns).toInt)
               .toList
 
-    transpose(grouped).iterator.flatMap {
-      case first :+ last => first.map(
+    transpose(grouped).iterator.flatMap { group =>
+      val last = group.last
+      group.init.map(
         x => x ++ " " * (width / columns - x.length)
       ) :+ last :+ Ansi.Str.parse(newLine)
     }