Speed of syntax tables

Well, I don't know what I was smoking - but (setq lookup-syntax-properties nil) seems to cure the worst of the slowness for me. Unfortunately indentation at the bottom of my 5K line file is still 10s with font lock on (2s without) so something bad is still going on but it seems unrelated to Matt's change. Worse it appears there is a bug in my option code since building *with* SYNTAX_TEXT_PROPERTIES doesn't work with java files - font-lock aborts. Other files work ok. So I think you should go ahead with setting lookup-syntax-properties to nil and any other optimizations you feel appropriate. I'll probably just overwrite the affected files in the windows branch when you are done. andy P.S. I don't smoke.