From b3e40a443c1850c76baa6efb8049ca39474b0010 Mon Sep 17 00:00:00 2001
From: Ashley Hauck <ashauck@microsoft.com>
Date: Fri, 8 Sep 2017 13:00:43 -0700
Subject: [PATCH] Use StringBuilder.Append instead of string concat

---
 src/Compilers/Core/MSBuildTask/DotnetHost.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Compilers/Core/MSBuildTask/DotnetHost.cs b/src/Compilers/Core/MSBuildTask/DotnetHost.cs
index cc241c43469..569a6f13a78 100644
--- a/src/Compilers/Core/MSBuildTask/DotnetHost.cs
+++ b/src/Compilers/Core/MSBuildTask/DotnetHost.cs
@@ -66,7 +66,8 @@ private static string PrependFileToArgs(string pathToTool, string commandLineArg
         {
             var builder = new CommandLineBuilderExtension();
             builder.AppendFileNameIfNotNull(pathToTool);
-            builder.AppendTextUnquoted(" " + commandLineArgs);
+            builder.AppendTextUnquoted(" ");
+            builder.AppendTextUnquoted(commandLineArgs);
             return builder.ToString();
         }
     }
-- 
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