nl_tokens: Handle diffing of previous and current attributes .
pl_tokens: function updateAttributes ( el , prevProps , props ) { var propName ; if ( ! props || prevProps === props ) { return ; } // Set attributes. for ( propName in props ) { if ( ! filterNonEntityPropNames ( propName ) ) { continue ; } doSetAttribute ( <mask> , props , propName ) ; } // See if attributes were removed. if ( prevProps ) { for ( propName in prevProps ) { if ( ! filterNonEntityPropNames ( propName ) ) { continue ; } if ( props [ propName ] === undefined ) { el . removeAttribute ( propName ) ; } } } }