Rewrote my own submitted code of a year ago from trac and added

scalawhich to the tools dir.  Closes #657.

git-svn-id: http://lampsvn.epfl.ch/svn-repos/scala/scala/trunk@20889 5e8d7ff9-d8ef-0310-90f0-a4852d11357a

src/compiler/scala/tools/util/Which.scala

@@ -0,0 +1,39 @@
+/* NSC -- new Scala compiler
+ * Copyright 2005-2010 LAMP/EPFL
+ * @author  Paul Phillips
+ */
+
+package scala.tools
+package util
+
+import scala.tools.nsc._
+
+/** A tool for identifying which classfile is being used.
+ *  under the given conditions.
+ */
+object Which
+{
+  def main(args: Array[String]): Unit = {
+    val settings = new Settings()
+    val names = settings.processArguments(args.toList, true)._2
+    val global = new Global(settings)
+    val cp = global.classPath
+
+    import cp._
+    
+    for (name <- names) {
+      def fail = println("Could not find: %s".format(name))
+      (cp findClass name) match {
+        case Some(classRep) => classRep.binary match {
+          case Some(f)  => println("%s is %s".format(name, f))
+          case _        => fail
+        }
+        case _ => fail
+      }
+    }
+  }
+}
+
+
+
+

tools/scalawhich

@@ -0,0 +1,4 @@
+#!/bin/sh
+#
+
+scala scala.tools.util.Which $*