URL rewriting: addon domains, subdomains, and directories

Say I have domain.com and addon.com. My hosting provider is Bluehost. domain.com is the primary domain (hosted in public_html) and addon.com is an addon domain (hosted in public_html/addon). I'd like to make the following redirects:

• http://domain.com/addon/* → http://addon.com/*

• http://addon.domain.com/* → http://addon.com/*

For reference, both public_html/.htaccess开发者_运维技巧 and public_html/addon/.htaccess have working rules for removing the www prefix:

RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301]

How do I go about adding the other redirects in a way that will play nice with these rules?

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Place these 2 rules in your public_html/.htaccess file:

RewriteCond %{HTTP_HOST} ^domain\.com$ [NC]
RewriteRule ^(addon)/(.*)$ http://$1.com/$2 [NC,L,R=301]

RewriteCond %{HTTP_HOST} ^(addon)\.domain\.com$ [NC]
RewriteRule ^(.*)$ http://%1.com/$1 [NC,L,R=301]