BuddyPress.org

I have had a crack at this, and it worked a little but:
1) it’s too hacky (editing core files)
2) it broke activity replies (no text in a reply)

So what do you guys think about this:

/wp-content/plugins/buddypress/bp-activitybp-activity-filters.php
`/**
* Finds and links @-mentioned users in the contents of activity items
*
* @since 1.2.0
*
* @param string $content The activity content
* @param int $activity_id The activity id
*
* @uses bp_activity_find_mentions()
* @uses bp_is_username_compatibility_mode()
* @uses bp_core_get_userid_from_nicename()
* @uses bp_activity_at_message_notification()
* @uses bp_core_get_user_domain()
* @uses bp_activity_adjust_mention_count()
*
* @return string $content Content filtered for mentions
*/
function bp_activity_at_name_filter( $content, $activity_id = 0 ) {
global $wpdb;

$usernames = bp_activity_find_mentions( $content );

if(is_site_admin() && in_array(“all”, $usernames)){
$all_users = $wpdb->get_col( $wpdb->prepare(“SELECT $wpdb->users.user_login FROM $wpdb->users”));
foreach($all_users as $i_users){
array_push($usernames, $i_users);
}
}

if ( !$usernames = array_unique( $usernames ) )
return false;

foreach( (array)$usernames as $username ) {
if ( bp_is_username_compatibility_mode() )
$user_id = username_exists( $username );
else
$user_id = bp_core_get_userid_from_nicename( $username );

if ( empty( $user_id ) )
continue;

// If an activity_id is provided, we can send email and BP notifications
if ( $activity_id ) {
bp_activity_at_message_notification( $activity_id, $user_id );
}

$content = preg_replace( ‘/(@’ . $username . ‘b)/’, “@$username“, $content );
}

// Adjust the activity count for this item
if ( $activity_id )
bp_activity_adjust_mention_count( $activity_id, ‘add’ );

return $content;
}`

(The site admin check is to stop spamming )
And also, how would I go about using this as part of a plugin (I think i’d have to use add and remove filter or something).
If anyone can take a look at this and point me in the right direction to get all this working i’d be grateful!

– Eliott