nl_tokens: This comparator can be used by collections that wish to support locale - based sorting . The locale specifies how upper and lower case are compared .
pl_tokens: function localeComparator ( model1 , model2 ) { var a1 = model1 . <mask> ( this . sortField ) , a2 = model2 . get ( this . sortField ) ; if ( a1 !== undefined && a1 . localeCompare ) { var result = a1 . localeCompare ( a2 ) * this . sortDir ; if ( result || ! this . secondarySortField ) { return result ; } a1 = model1 . get ( this . secondarySortField ) ; a2 = model2 . get ( this . secondarySortField ) ; return a1 . localeCompare ( a2 ) * this . sortDir ; } return a1 > a2 ? this . sortDir : ( a1 < a2 ? - this . sortDir : 0 ) ; }