--- a/app/assets/javascripts/zp.new.js	Thu Jul 03 15:03:52 2014 +0900
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,18 +0,0 @@
-//= require jquery.autosize
-//= require autosize_box_fix
-(function($) {
-  window.zp.new = {
-    input: function() { return $("#paste_paste") },
-    clear: function(e) {
-      this.input().val("").focus()
-      e.preventDefault()
-    },
-    init: function() {
-      if (this.input().length === 0) { return }
-      $(document).on('click', "#reset_paste", $.proxy(this.clear, this))
-      this.input().autosize({ className: 'mirrored_text form-control', append: "\n"});
-      $.autosize_box_fix($(".mirrored_text"))
-      this.input().focus()
-    }
-  }
-})(jQuery)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/assets/javascripts/zp.new.js.coffee	Thu Jul 03 15:15:53 2014 +0900
@@ -0,0 +1,16 @@
+#= require jquery.autosize
+#= require autosize_box_fix
+window.zp.new =
+  input: -> $("#paste_paste")
+
+  clear: (e) ->
+    e.preventDefault()
+    @input().val("").focus()
+
+  init: ->
+    return unless @input().length
+
+    $(document).on "click", "#reset_paste", $.proxy(@clear, this)
+    @input().autosize className: "mirrored_text form-control", append: "\n"
+    $.autosize_box_fix $(".mirrored_text")
+    @input().focus()