A reply to one of my blog comment to force alphabetical order for bc_members shortcode. See http://imathi.eu/2011/05/15/bowe-codes/comment-page-1/#comment-17190

gistfile1.php

<?php

/** begining of code to copy paste in functions.php of active theme **/

/**
 * Forces the order of bc_members to be alphabetical if an alpha class has been added
 *
 * Using the class argument of bc_members allows to only filter the members_args
 * if the class 'alpha' prepends my_members class. Keeping my_members class will maintain
 * css rules.
 *
 * Example of Bowe Code : [bc_members class="alpha my_members"]
 * 
 * @param  array $members_args the args sent to bp_has_members
 * @param  array $args         merge array between default shortcode atts and user args
 * @return array               the new args to send to bp_has_members
 */
function imath_alphabetical_sort_members( $members_args, $args ) {

  if( strpos( $args['class'], 'alpha' ) === 0 )
		$members_args['type'] = 'alphabetical';
	
	return $members_args;
}

add_filter( 'bowe_codes_members_tag_args', 'imath_alphabetical_sort_members', 10, 2 );

/** end of code **/
?>