Concerning the idea of making SE to create additional syntax highlighting for the site you will have to ask on metaSO. Now, there are several things to take into account:
- SE uses Google Code Prettify to render syntax highlighting, so the language you want to add needs to be available as an extension to this;
- All people visiting any pages on the site will have to load that extension at every page loaded, so it needs to be worth it (high number of posts needing it), light-weight (see this threadthis thread for instance) and a clear improvement as, for many language, the 'default' syntax highlighting (the one triggered by
<!--language: default -->
or by any lang-* that exists but is not yet implemented like typically lang-r) does already a good job (recognize comments, common control flow likeif
andwhile
and recognize string).
FYI you have a list of currently implemented SH herehere.
NB: I'm currently campaigning on meta to get syntax highlighting for R on SO, so I did some research on that recently, hence my answer.