This patch make highlight filenames by it's extensions.
See forum thread:
Steps to Reproduce:
I'm afraid but this won't get applied; the patchset to keep mc functional is already big so I'm feeling declined to reject any enhancements not coming
from upstream. Please, try sending the patches to them first.
You can still maintain it in your local overlay..
If this isn't in 4.7.0_pre1 you can propose it now at
Since MC has a new upstream