with a working -n --no-wrap option to disable the top-level function safety wrapper

lib/coffee_script/command_line.rb

@@ -112,7 +112,7 @@ Usage:
     # Compile a single source file to JavaScript.
     def compile(script, source='')
       begin
-        CoffeeScript.compile(script)
+        CoffeeScript.compile(script, :no_wrap => @options[:no_wrap])
       rescue CoffeeScript::ParseError => e
         STDERR.puts e.message(source)
         exit(1) unless @options[:watch]
@@ -160,6 +160,9 @@ Usage:
         opts.on('-v', '--verbose', 'print at every step of code generation') do |v|
           ENV['VERBOSE'] = 'true'
         end
+        opts.on('-n', '--no-wrap', 'suppress the top-level safety function wrapper') do |n|
+          @options[:no_wrap] = true
+        end
         opts.on_tail('--install-bundle', 'install the CoffeeScript TextMate bundle') do |i|
           install_bundle
           exit

lib/coffee_script/nodes.rb

@@ -75,16 +75,17 @@ module CoffeeScript
     end
 
     # If this is the top-level Expressions, wrap everything in a safety closure.
-    def root_compile
-      code = compile(:indent => TAB, :scope => Scope.new)
+    def root_compile(o={})
+      indent = o[:no_wrap] ? '' : TAB
+      code = compile(:indent => indent, :scope => Scope.new)
       code.gsub!(STRIP_TRAILING_WHITESPACE, '')
-      "(function(){\n#{code}\n})();"
+      o[:no_wrap] ? code : "(function(){\n#{code}\n})();"
     end
 
     # The extra fancy is to handle pushing down returns and assignments
     # recursively to the final lines of inner statements.
     def compile(options={})
-      return root_compile unless options[:scope]
+      return root_compile(options) unless options[:scope]
       code = @expressions.map { |node|
         o = super(options)
         if last?(node) && (o[:return] || o[:assign])