How can one use lookahead/lookbehind assertions in the regex for a mod_rewrite RewriteRule, or mod_alias AliasMatch? Currently when I attempt to use a question mark in my regex, as needed for lookarounds, I get an internal server error for mod_rewrite, or a syntax error for mod_alias. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx