nl_tokens: Suspend listener during callback .
pl_tokens: function suspendListener ( obj , eventName , target , method , callback ) { if ( ! method && 'function' === typeof target ) { method = target ; target = null ; } var actions = actionsFor ( obj , eventName ) , actionIndex = indexOf ( actions , target , method ) ; if ( actionIndex !== - 1 ) { <mask> [ actionIndex + 2 ] |= SUSPENDED ; // mark the action as suspended } function tryable ( ) { return callback . call ( target ) ; } function finalizer ( ) { if ( actionIndex !== - 1 ) { actions [ actionIndex + 2 ] &= ~ SUSPENDED ; } } return Ember . tryFinally ( tryable , finalizer ) ; }