command logging through Streams, 'last' without a key to redisplay it

util/control/ExitHook.scala

@@ -4,13 +4,15 @@
 package sbt
 
 /** Defines a function to call as sbt exits.*/
-trait ExitHook extends NotNull
+trait ExitHook
 {
-	/** Provides a name for this hook to be used to provide feedback to the user. */
-	def name: String
 	/** Subclasses should implement this method, which is called when this hook is executed. */
 	def runBeforeExiting(): Unit
 }
+object ExitHook
+{
+	def apply(f: => Unit): ExitHook = new ExitHook { def runBeforeExiting() = f }
+}
 
 object ExitHooks
 {

util/log/ConsoleLogger.scala

@@ -1,9 +1,9 @@
 /* sbt -- Simple Build Tool
- * Copyright 2008, 2009, 2010 Mark Harrah
+ * Copyright 2008, 2009, 2010, 2011 Mark Harrah
  */
 package sbt
 
-	import java.io.{PrintStream, PrintWriter}
+	import java.io.{BufferedWriter, PrintStream, PrintWriter}
 
 object ConsoleLogger
 {
@@ -17,8 +17,14 @@ object ConsoleLogger
 	def printWriterOut(out: PrintWriter): ConsoleOut = new ConsoleOut {
 		val lockObject = out
 		def print(s: String) = out.print(s)
-		def println(s: String) = out.println(s)
-		def println() = out.println()
+		def println(s: String) = { out.println(s); out.flush() }
+		def println() = { out.println(); out.flush() }
+	}
+	def bufferedWriterOut(out: BufferedWriter): ConsoleOut = new ConsoleOut {
+		val lockObject = out
+		def print(s: String) = out.write(s)
+		def println(s: String) = { out.write(s); println() }
+		def println() = { out.newLine(); out.flush() }
 	}
 
 	val formatEnabled =