Yea, being able to customize with C++ is peferable for some people compared to vimscript/lisp/etc. Then you have the issue where emacs and vim can choke under r

Yea, being able to customize with C++ is peferable for some people compared to vimscript/lisp/etc. Then you have the issue where emacs and vim can choke under reasonable file sizes. The other part is vim/emacs aren't as performant as they could be