Make the launcher initialize Jansi if it's found on the path

launch/Boot.scala

@@ -12,6 +12,7 @@ object Boot
 	{
 		System.clearProperty("scala.home") // avoid errors from mixing Scala versions in the same JVM
 		CheckProxy()
+    initJansi()
 		run(args)
 	}
 	// this arrangement is because Scala 2.7.7 does not properly optimize away
@@ -40,4 +41,16 @@ object Boot
 	}
 	private def exit(code: Int): Nothing = 
 		System.exit(code).asInstanceOf[Nothing]
+
+  private def initJansi() {
+    try {
+      val c = Class.forName("org.fusesource.jansi.AnsiConsole")
+      c.getMethod("systemInstall").invoke(null)
+      if(System.getProperty("sbt.log.format") eq null)
+        System.setProperty("sbt.log.format", "true")
+    } catch {
+      case ignore: ClassNotFoundException =>
+      case ex => println("Jansi found on class path but initialization failed: "+ex)
+    }
+  }
 }