title: Custom Language for Intellij which is extension of HTML
body: <p>I want to create a custom language plugin for intellij for a templating language which is an extension of HTML (it has additional tags). I followed the Custom Language Plugins tutorial on the jetbrains site. But it would require me to have a lexer and parser file. I did not find those files for HTML in the intellij community edition.
  Is there maybe an easier way to create a parser by extending the already present HTML parser?</p>