Look at the function global_profile_menu_structure.
You just need to create a function that pulls in the array variable $profile_menu as a global. Then add to that array in the manner specified in the comments of the function global_profile_menu_structure.
Should be downhill from there.
p.s. Would be nice if you could add an entry for it at bbPulp when you are done.
Cheers Sam, that’s definitely the way to do it, but I can’t quite make it work. Adding the tab is easy, but following the link dumps you on the front page (if using add_profile_tab()) or in your profile (if adding the tab manually).
function felavatartab()
{
global $profile_menu, $profile_hooks;
$profile_tab = array(__('Avatar'), 'edit_profile', 'moderate', 'avatar-upload.php', 'avatar');
$profile_menu[] = $profile_tab;
if ( can_access_tab( $profile_tab, bb_get_current_user_info( 'id' ), $user_id ) )
$profile_hooks[bb_tag_sanitize($profile_tab[4])] = $profile_tab[3];
}
add_action( 'bb_profile_menu', 'felavatartab' );
OR
function felavatartab()
{
add_profile_tab(__('Avatar'), 'edit_profile', 'moderate', 'avatar-upload.php');
}
add_action( 'bb_profile_menu', 'felavatartab' );
I’ve got the file avatar-upload.php in my root directory, which loads the template avatar.php. If instead you give avatar.php as your argument the tab doesn’t show up at all.
See it here. Any idea?
I tested the second method on the latest build and it passes the bb_repermalink tests and loads.
I tried using standard URLs and both types of permalinks.
I didn’t try to load a template. I used a file called avatar-upload.php containing the following:
<?php
require_once('./bb-load.php');
bb_repermalink(); // The magic happens here.
echo 'test';
?>
My test plugin contained:
<?php
/*
Plugin Name: Test for fel64
Plugin URI:
Description: Test profile tab addition
Author: Scooby Doo
Version: 0.0.1
Author URI:
*/
$bb->debug = 1;
function felavatartab()
{
add_profile_tab(__('Avatar'), 'edit_profile', 'moderate', 'avatar-upload.php');
}
add_action( 'bb_profile_menu', 'felavatartab' );
?>
Should really have been more familiar with the code – there’s a check to see if it’s the correct file, otherwise it simply redirects to the front page. Getting rid of that made it work.
Thanks for all your help, Sam! 
Aha! Thank you Sam! As fel has already discovered I abandoned any attempt at having “Upload Avatar” as a profile tab. It’s definitely going into the next version.
Note that you will have to get rid of the filename check and that all that $user_id business is unnecessary and stopped my script executing. Just grab the global $user.
