I've got some custom smilies I would like to upload.
I saw a couple of articles how to do this by uploading the smiley gifs in wp-includes/images then adding the code in wp-includes/themefunctions.php under the:
$wpsmiliestrans = array(
by writing for example:
':exclamation-mark:' => 'exclamation-mark.gif',
here is an article I read on it.
Is it possible to do this sort of thing in wp-content/mu-plugins then upload my image in another directory? As I would prefer not to add anything in the wp-includes directory.