As a response to: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=21008

 

It should be noted that if CSS3 isn't already touring complete, there are lots of CSS superset languages (LESS [1], SASS [2], etc) which definitely are touring-complete and whose Emacs-modes do derive from css-mode. As an emacs-user I would expect those modes to invoke my prog-mode hooks without me manually having to wire them up.

 

So I don't think there is any doubt that erring on the side of prog-mode is the right thing to do (tm).

 

While this isn't really a big deal to me, I agree with Vasilij that consistency would be nice.

 

As for file revision history, last time I checked git manages to track moved files just fine without messing up the history, so I don't see a technical reason to avoid fixing this up.

 

[1] https://github.com/myfreeweb/less-mode/blob/master/less-mode.el#L75