Syntax highlighting is a really great feature, often debated on meta :).
Some edge corner languages or tags have a "poor" representation, due to an incomplete (and of course uncompletable) matrix relation between code and right highlithing. The only global post I founded on this topic is now closed.
Every time we ask about interface modification (e.g. Adding syntax highlighting item in the editing toolbar but many time over many posts), I read "Trust in automatic detection". I don't, even a really great job was accomplished yet (at least for the 40th and most useful tags ;)).
As I said, sometimes, for some extra languages / tags, it's not implemented, or not easy to such a job.
So, why not use a voting system, maybe like moderators elections, in order to help Mike Samuel and Jeff Atwood (if I'm not mistaken) in their job to assign a tag / a language to a syntax highlithing.
It may not be automatic, but whan a language as reached xx upvotes (lets say 150 ?), it can be consider as trustable.
Feel free to suggest any other idea, (in way of voting, vote limit, ...)
PS : I really don't want to my request be misunderstood. Syntax highlighting is a really great functionnality, and automatic detection too. Thanks for all work already done.
Voting system for tag synonyms is indeed quite closer from what I suggests. Thanks Flexo