Working on the finer points of the Total Repl E...

Working on the finer points of the Total Repl Experience. Some of what
is in this patch:

-- Instantaneous repl startup.  Closes #4561.
-- SIGINT handler installed last.  If you've been annoyed at the repl
being difficult to interrupt during its initialization, this one is
especially for you.
-- Started abstracting out some bits which would go into an API and
reconfiguring the repl in those terms.

For a good time, call S-C-A-L-A -Dscala.repl.power. No review.

1 files changed, 22 insertions, 0 deletions

diff --git a/src/compiler/scala/tools/nsc/interpreter/ReplReporter.scala b/src/compiler/scala/tools/nsc/interpreter/ReplReporter.scala
new file mode 100644
index 0000000000..ab0911d374
--- /dev/null
+++ b/src/compiler/scala/tools/nsc/interpreter/ReplReporter.scala
@@ -0,0 +1,22 @@
+/* NSC -- new Scala compiler
+ * Copyright 2002-2011 LAMP/EPFL
+ * @author Paul Phillips
+ */
+
+package scala.tools.nsc
+package interpreter
+
+import reporters._
+import IMain._
+
+class ReplReporter(intp: IMain) extends ConsoleReporter(intp.settings, null, new ReplStrippingWriter(intp)) {
+  override def printMessage(msg: String) {
+    // Avoiding deadlock if the compiler starts logging before
+    // the lazy val is complete.
+    if (intp.isInitializeComplete) {
+      if (intp.totalSilence) ()
+      else super.printMessage(msg)
+    }
+    else Console.println(msg)
+  }
+}