plugin.xml

<?xml version="1.0" encoding="UTF-8" ?>
<?eclipse version="3.0"?>

<plugin>
       <extension point="org.eclipse.imp.runtime.languageDescription">
          <language extensions="lua" description="Lua" language="Lua" derivedFrom="DynamicRoot" validator="lua.LuaValidator" validatorClass="lua.LuaValidator"></language>
       </extension>
       <extension id="lua.parser" name="Lua Parser" point="org.eclipse.imp.runtime.parser">
          <parser class="lua.LuaParseController" language="Lua">
          </parser>
       </extension>
       <extension point="org.eclipse.imp.runtime.labelProvider">
          <labelProvider class="lua.LuaLabelProvider" language="Lua"></labelProvider>
       </extension>
    </plugin>