Convert to lowercase in a mod_rewrite rule

Question

I would like URLs like server.com/foo to be case-insensitive. But server.com/foo actually gets mod_rewrite\'d to server.com/somedir/foo

(Assume that all the files in

Answer 1

RewriteMap tolower int:tolower
RewriteRule  ^([^/]+)/?$  somedir/${tolower:$1}