i want to change theme_username, a core theme function that outputs that dreadful "not verified" string on users who are not logged in (when they comment, for example). i want a checkbox in admin/build/themes/settings/MYTHEME to change that. but since that theme function gets called a lot, will it hurt the performance of any site using my theme or are theme settings cached?
Although I am using drupal since the D4 series, I only started developing professionally for it with D6, so - despite I did various site upgrades - I was never faced by the task of having to port my ...