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n=C.find(b.label),i=n.filter("."+h.active),a=(i.data(p.value),n.index(i)),o=n.length,s=0<i.length,r=1<i.length,l=0===a,c=a+1==o,u=F.is.searchSelection(),d=F.is.focusedOnSearch(),v=F.is.focused(),f=d&&0===F.get.caretPosition();if(u&&!s&&!d)return;t==g.leftArrow?!v&&!f||s?s&&(e.shiftKey?F.verbose("Adding previous label to selection"):(F.verbose("Selecting previous label"),n.removeClass(h.active)),l&&!r?i.addClass(h.active):i.prev(b.siblingLabel).addClass(h.active).end(),e.preventDefault()):(F.verbose("Selecting previous label"),n.last().addClass(h.active)):t==g.rightArrow?(v&&!s&&n.first().addClass(h.active),s&&(e.shiftKey?F.verbose("Adding next label to selection"):(F.verbose("Selecting next label"),n.removeClass(h.active)),c?u?d?n.removeClass(h.active):F.focusSearch():r?i.next(b.siblingLabel).addClass(h.active):i.addClass(h.active):i.next(b.siblingLabel).addClass(h.active),e.preventDefault())):t==g.deleteKey||t==g.backspace?s?(F.verbose("Removing active 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