> most Emacs modes depend on a lot of regular expressions for syntax highlighting and many other things. Regular expressions are slow I use Emacs every day. Ne

> most Emacs modes depend on a lot of regular expressions for syntax highlighting and many other things. Regular expressions are slow I use Emacs every day. Never had a problem with slow syntax highlighting when working on regular source code files. I don't feel regexs are bottlenecks in everyday use.