Convert Run command to use Executor

This adds many features such as being able to run unsaved files, improving command output and displays the version number of scala. Drops the use of SCALA_HOME in favor of TM_SCALA using requiredCommands.

Author: infininight

Commands/Run as script.tmCommand

@@ -3,30 +3,15 @@
 <plist version="1.0">
 <dict>
 	<key>beforeRunningCommand</key>
-	<string>nop</string>
+	<string>saveModifiedFiles</string>
 	<key>command</key>
-	<string>#!/usr/bin/env ruby18 -wKU
-
-require ENV['TM_SUPPORT_PATH'] + '/lib/textmate.rb'
-require ENV["TM_SUPPORT_PATH"] + "/lib/tm/htmloutput"
-
-TextMate.require_env_var("SCALA_HOME", "Please set the SCALA_HOME shell variable to the root of your scala installation. For me this is /Users/Mads/dev/programming_languages/scala-2.8.0.final")
-
-if ENV['TM_FILEPATH'] != nil
-  TextMate::HTMLOutput.show(
-    :title =&gt; "Running: #{ENV['TM_FILEPATH']}", 
-    :sub_title =&gt; "") do |io|
-      cmd = ENV['SCALA_HOME'] + "/bin/scala -nocompdaemon -howtorun:script " + "'" + ENV['TM_FILEPATH'] + "'"
-      io &lt;&lt; "&lt;pre&gt;&lt;code&gt;"
-      io &lt;&lt; `#{cmd}`
-      io &lt;&lt; "&lt;/code&gt;&lt;/pre&gt;"
-    end
-else
-	puts "Please save your file first"
-end
-
+	<string>#!/usr/bin/env ruby18
 
+require "#{ENV['TM_SUPPORT_PATH']}/lib/tm/executor"
+require "#{ENV['TM_SUPPORT_PATH']}/lib/tm/save_current_document"
 
+TextMate.save_if_untitled('scala')
+TextMate::Executor.run(ENV['TM_SCALA'], '-nocompdaemon', '-howtorun:script', ENV['TM_FILEPATH'], :version_args =&gt; ["-version"], :version_regex =&gt; /\AScala code runner version ([^\s]*).*/m)
 </string>
 	<key>input</key>
 	<string>document</string>
@@ -35,13 +20,27 @@ end
 	<key>keyEquivalent</key>
 	<string>@r</string>
 	<key>name</key>
-	<string>Run as script</string>
+	<string>Run</string>
 	<key>outputCaret</key>
 	<string>afterOutput</string>
 	<key>outputFormat</key>
 	<string>html</string>
 	<key>outputLocation</key>
 	<string>newWindow</string>
+	<key>requiredCommands</key>
+	<array>
+		<dict>
+			<key>command</key>
+			<string>scala</string>
+			<key>locations</key>
+			<array>
+				<string>/usr/local/bin/scala</string>
+				<string>/opt/local/bin/scala</string>
+			</array>
+			<key>variable</key>
+			<string>TM_SCALA</string>
+		</dict>
+	</array>
 	<key>scope</key>
 	<string>source.scala</string>
 	<key>uuid</key>