Multiple RewriteRules for a single set of RewriteConds - apache

Question

We've tried all the suggestions on stackoverflow we could find for adding multiple RewriteRules for the same set of RewriteConds, but in all cases, we're only able to get the first RewriteRule to work.
This is the working code for a single rewrite that we'd like to add more categories to:
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /designers/$1 [NC,L]
</IfModule>
None of the below work:
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /designers/$1 [NC,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /labels/$1 [NC,L]
</IfModule>
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f [OR]
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .? - [S=2]
RewriteRule ^(.*)$ /designers/$1 [NC,L]
RewriteRule ^(.*)$ /labels/$1 [NC,L]
</IfModule>

Answer 1

Your [OR] cond is almost correct. When you do a logical invert, you must also negate.
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule .? - [S=2]
RewriteRule ^(.*)$ /designers/$1 [NC,L]
RewriteRule ^(.*)$ /labels/$1 [NC,L]
So you don't want !-f, you want -f. Keep in mind that the S=2 skips 2 rules. If you have more categories you'll need to change that, or just use the L flag instead.