serve CSS and JS to logged in users

I understand that the documents will change dramatically between users, but the javascript and css does not usually change between users. So, shouldn't those be able to be gzipped?

I was able to do this by modifying part of my Boost htaccess.

  # Skip boost IF not get request OR uri has wrong dir OR cookie is set
  RewriteCond %{REQUEST_METHOD} !^GET$ [OR]
  RewriteCond %{REQUEST_URI} (^/(admin|cache|misc|modules|sites|system|themes))|(/(comment/reply|user|user/(login|password|register))$) [OR]
  RewriteCond %{HTTP_COOKIE} DRUPAL_UID
  RewriteRule .* - [S=9]

  # GZIP
  RewriteCond %{HTTP:Accept-encoding} !gzip
  RewriteRule .* - [S=4]

  RewriteCond %{DOCUMENT_ROOT}/cache/gz/%{SERVER_NAME}%{REQUEST_URI}_%{QUERY_STRING}\.html\.gz -s
  RewriteRule .* cache/gz/%{SERVER_NAME}%{REQUEST_URI}_%{QUERY_STRING}\.html\.gz [L,T=text/html]
  RewriteCond %{DOCUMENT_ROOT}/cache/gz/%{SERVER_NAME}%{REQUEST_URI}_%{QUERY_STRING}\.xml\.gz -s
  RewriteRule .* cache/gz/%{SERVER_NAME}%{REQUEST_URI}_%{QUERY_STRING}\.xml\.gz [L,T=text/xml]
  RewriteCond %{DOCUMENT_ROOT}/cache/gz/%{SERVER_NAME}%{REQUEST_URI}_\.css\.gz -s
  RewriteRule .* cache/gz/%{SERVER_NAME}%{REQUEST_URI}_\.css\.gz [L,QSA,T=text/css]
  RewriteCond %{DOCUMENT_ROOT}/cache/gz/%{SERVER_NAME}%{REQUEST_URI}_\.js\.gz -s
  RewriteRule .* cache/gz/%{SERVER_NAME}%{REQUEST_URI}_\.js\.gz [L,QSA,T=text/javascript]

to

  # GZIP
  RewriteCond %{HTTP:Accept-encoding} !gzip
  RewriteRule .* - [S=2]
  
  RewriteCond %{DOCUMENT_ROOT}/cache/gz/%{SERVER_NAME}%{REQUEST_URI}_\.css\.gz -s
  RewriteRule .* cache/gz/%{SERVER_NAME}%{REQUEST_URI}_\.css\.gz [L,QSA,T=text/css]
  RewriteCond %{DOCUMENT_ROOT}/cache/gz/%{SERVER_NAME}%{REQUEST_URI}_\.js\.gz -s
  RewriteRule .* cache/gz/%{SERVER_NAME}%{REQUEST_URI}_\.js\.gz [L,QSA,T=text/javascript]


  # Skip boost IF not get request OR uri has wrong dir OR cookie is set
  RewriteCond %{REQUEST_METHOD} !^GET$ [OR]
  RewriteCond %{REQUEST_URI} (^(admin|cache|misc|modules|sites|system|themes))|(/(comment/reply|user|user/(login|password|register))$) [OR]
  RewriteCond %{HTTP_COOKIE} DRUPAL_UID
  RewriteRule .* - [S=7]

  # GZIP
  RewriteCond %{HTTP:Accept-encoding} !gzip
  RewriteRule .* - [S=2]

  RewriteCond %{DOCUMENT_ROOT}/cache/gz/%{SERVER_NAME}%{REQUEST_URI}_%{QUERY_STRING}\.html\.gz -s
  RewriteRule .* cache/gz/%{SERVER_NAME}%{REQUEST_URI}_%{QUERY_STRING}\.html\.gz [L,T=text/html]
  RewriteCond %{DOCUMENT_ROOT}/cache/gz/%{SERVER_NAME}%{REQUEST_URI}_%{QUERY_STRING}\.xml\.gz -s
  RewriteRule .* cache/gz/%{SERVER_NAME}%{REQUEST_URI}_%{QUERY_STRING}\.xml\.gz [L,T=text/xml]

That snippet is not perfect probably, since I don't know much about htaccess syntax. It probably doesn't have a fallback rule for css/js that isn't compressed, but what use would those be? It'll just stick with the original files if the browser doesn't gzip.