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Editing: revisions_lib_rs.php

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<?php

// TODO: support multiple status types
function rs_get_post_revisions($post_id, $status = 'inherit', $args = array() ) {
	global $wpdb;
	
	$defaults = array( 'order' => 'DESC', 'orderby' => 'post_modified_gmt', 'use_memcache' => true, 'fields' => COLS_ALL_RS, 'return_flipped' => false, 'where' => '' );
	$args = wp_parse_args( $args, $defaults );
	extract( $args );
	
	if ( COL_ID_RS == $fields ) {
		// performance opt for repeated calls by user_has_cap filter
		if ( $use_memcache ) {
			static $last_results;
			
			if ( ! isset($last_results) )
				$last_results = array();
		
			elseif ( isset($last_results[$post_id][$status]) )
				return $last_results[$post_id][$status];
		}
		
		$revisions = scoper_get_col("SELECT ID FROM $wpdb->posts WHERE post_type = 'revision' AND post_parent = '$post_id' AND post_status = '$status' $where");
	
		if ( $return_flipped )
			$revisions = array_fill_keys( $revisions, true );

if ( $use_memcache ) {
			if ( ! isset($last_results[$post_id]) )
				$last_results[$post_id] = array();
				
			$last_results[$post_id][$status] = $revisions;
		}	
			
	} else {
		$order_clause = ( $order && $orderby ) ? $wpdb->prepare( "ORDER BY %s %s", $orderby, $order ) : '';
		$revisions = scoper_get_results( $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE post_type = 'revision' AND post_parent = %d AND post_status = %s $order_clause", $post_id, $status ) );
	}

return $revisions;
}

Editing: revisions_lib_rs.php

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