How to get Vim to highlight non-ascii characters?

Question

I\'m trying to get Vim to highlight non-ASCII characters. Is there an available setting, regex search pattern, or plugin to do so?

Answer 1

This regex works as well. It was the first google hit for "vim remove non-ascii characters" from briceolion.com and with :set hlsearch will highlight:

/[^[:alnum:][:punct:][:space:]]/