Index: scripts/checkin.php
===================================================================
--- scripts/checkin.php	(revision 5162)
+++ scripts/checkin.php	(working copy)
@@ -41,6 +41,14 @@
 		exit( 1 );
 	}
 
+	# Override the username with the one passed on the command line - if any
+	if ($GLOBALS['argc'] > 1) {
+		$t_committer = $GLOBALS['argv'][1];
+
+		if (!is_blank( $t_committer ) && ( user_get_id_by_name( $t_committer ) != false ) )
+			$t_username = $t_committer;
+	}
+
 	if ( !defined( "STDIN" ) ) {
 		define("STDIN", fopen('php://stdin','r'));
 	}