I created the following RewriteRule during development of a site on our dev server which runs Apache 2.2.3:
RewriteEngine on RewriteRule ^add-ons/(?!=details|download)(.+) /add-ons/details/$2 [NC]
Basically what I'm trying to do is to knock out the /details/ part of the URL so that I can have a link like example.com/add-ons/some-addon/ instead of example.com/add-ons/details/some-addon/.
Unfortunately upon releasing this to the live server, running Apache 1.3.41, I get
Error 500: Internal Server Error. I've played around with it but nothing I've tried works. Is this a limitation of Apache 1.3, maybe the forward lookahead isn't allowed?