Thinking of it, you are right. However, the comment is tied to javascript, so I would rather do it like [:html, :js, comment_type, content ], where comment_type can be used to enforce the comment type, which will be by default guessed by temple based on format (which already knows about it - that's what I like about this change most).

BTW, the correct HTML style opening comment should actually look like this:
`<script ...><!--`
(i.e., without // but on the same line). I guess it might be useful to include the :both option as well.

However, I am out of time right now, but I can implement all these changes tomorrow.