On Super User syntax highlighting is turned off. But there are questions on Super User where syntax highlighting can be helpful. Therefore I suggest that syntax highlighting is made possible to enable via prettify language codes (but turned off by default).
Having this feature would mean that a prettify language code, which are certain types of HTML comments, has to be inserted in a post for it to syntax highlighted. For example to syntax highlight a lisp code block in a question the following would have to be inserted before the block:
<!-- language: lang-lisp -->
There are many questions on Super User that would benefit from syntax highlighting. Here are two examples of tags with many questions:
- emacs questions often contains lisp code (on the third page of popular tags).
- bash questions often contains shell scripts (on the first page of popular tags).