It seems syntax highlighting is not enabled on every SE site, but later on turns out to be rather advantageous. As an example, Graphic Design may not have sounded like needing it, yet there is a feature request, and I think it's justified since many answers have code in them, e.g. JS for InDesign scripts, some GREP-regex and (rather obviously) HTML and CSS. While I'd appreciate having syntax highlighting activate on that specific site (so please upvote Adam's feature request), this question is more general about two points:
- Why is syntax highlighting disabled on some sites at all? Are the additional resource costs really so high? Couldn't caching improve that then?
- How to actually proceed when it should become activated on a specific site? It seems feature requests on the specific meta site are not exactly handled quickly (the request mentioned above is from 2013!), and also appear overkill for a simple "please switch that site's config bool for syntax highlighting".