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diff --git a/demos/lua.html b/demos/lua.html
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+<html>
+<head>
+  <title>
+    Emscripten: Lua
+  </title>
+  <script src="lua.js"></script>
+  <script>
+    // print function which the Lua engine will call
+    function print(text) {
+      document.getElementById('output').innerHTML += text + '<br>';
+      printed = true;
+    }
+
+    function execute(text) {
+      printed = false;
+
+      raw_argv[8] = Pointer_make(intArrayFromString(text), 0, ALLOC_STATIC); // leak!
+      argv = Pointer_make(raw_argv, null);
+
+      __Z7runargsP9lua_StatePPci(GLOBAL_L, argv, argc)
+
+      if (!printed) {
+        print('<small><i>(no output)</i></small>');
+      }
+    }
+
+    function doRun() {
+      args = ['-e', ''];
+      run(args);
+    }
+
+  </script>
+</head>
+<body onload="doRun(); document.getElementById('the_input').focus()">
+  <p>
+    This is the <a href="http://www.lua.org/">Lua</a> interpreter, compiled from C to JavaScript using <a href="http://emscripten.org">Emscripten</a>,
+    running in your browser (without any plugins).
+  </p>
+  <p>
+    Most stuff should work, please report bugs if you find them!
+  </p>
+  <hr>
+  <!-- Call Lua's execution function -->
+  <form onsubmit="execute(the_input.value); the_input.value = ''; return false">
+    <b>Enter some Lua</b>:
+    <input type="text" id="the_input">
+    <input type="submit" value="execute">
+  </form>
+  <hr>
+  <div id="output" style="font-family: Courier New,Courier,monospace;"></div>
+</body>
+</html>
+