| 1 common.inc | backdrop_clear_css_cache() | 
Deletes old cached CSS files.
File
- core/includes/ common.inc, line 4400 
- Common functions that many Backdrop modules will need to reference.
Code
function backdrop_clear_css_cache() {
  state_del('css_cache_files');
  file_scan_directory('public://css', '/.*/', array('callback' => 'backdrop_delete_file_if_stale'));
}
