Hi,

I want mod_rewrite to do this:

http://server/* -> redirect to http://server/app/*
http://server/app/* should not be redirected

http://server.domain/* -> redirect to http://server/app/*
http://server.domain/app* -> redirect to http://server/app/*

It has to work with mod_jk!

Edit: this is the final solution

` force use of host 'server'
RewriteCond %{HTTP_HOST} !^server$
RewriteRule ^(.*)$ server$1 [R,NE,L]

` prepend /app to URL if missing
RewriteCond %{request_uri} !^/app.*?
RewriteRule ^(.+?)$ app/$1 [R,NE,L]

Thanks to you, fahadsadah and Insanity5902! I'm hesitant to flag either one of you as 'correct', as both have provided valuable input that made up the final solution.