Vim slow with ruby syntax highlighting

Question

I\'ve been using vim over ssh to work for a week or two now and all has been going great. Today I decided to add in some syntax highlighting, autocomplete, and some other ge

Answer 1

Two things that will drastically help speed up Ruby syntax highlighting are disabling cursor line and relative number for Ruby (if you use those).

I have the following in my .vimrc:

" Ruby is an oddball in the family, use special spacing/rules
if v:version >= 703
  " Note: Relative number is quite slow with Ruby, so is cursorline
  autocmd FileType ruby setlocal ts=2 sts=2 sw=2 norelativenumber nocursorline
else
  autocmd FileType ruby setlocal ts=2 sts=2 sw=2
endif