void filter_rebuild(void);
GList *filter_to_list(const gchar *extensions);
+const gchar *registered_extension_from_path(const gchar *name);
gboolean filter_name_exists(const gchar *name);
gboolean filter_file_class(const gchar *name, FileFormatClass file_class);
gboolean filter_name_is_writable(const gchar *name);