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t=this.decodeFragment(this.location.pathname+this.getSearch()).slice(this.root.length-1);return"/"===t.charAt(0)?t.slice(1):t},getFragment:function(t){return(t=null==t?this._usePushState||!this._wantsHashChange?this.getPath():this.getHash():t).replace(O,"")},start:function(t){if(j.started)throw new Error("Backbone.history has already been started");if(j.started=!0,this.options=b.extend({root:"/"},this.options,t),this.root=this.options.root,this._wantsHashChange=!1!==this.options.hashChange,this._hasHashChange="onhashchange"in window&&(void 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e=window.addEventListener||function(t,e){return attachEvent("on"+t,e)};if(this._usePushState?e("popstate",this.checkUrl,!1):this._useHashChange&&!this.iframe?e("hashchange",this.checkUrl,!1):this._wantsHashChange&&(this._checkUrlInterval=setInterval(this.checkUrl,this.interval)),!this.options.silent)return this.loadUrl()},stop:function(){var t=window.removeEventListener||function(t,e){return detachEvent("on"+t,e)};this._usePushState?t("popstate",this.checkUrl,!1):this._useHashChange&&!this.iframe&&t("hashchange",this.checkUrl,!1),this.iframe&&(document.body.removeChild(this.iframe),this.iframe=null),this._checkUrlInterval&&clearInterval(this._checkUrlInterval),j.started=!1},route:function(t,e){this.handlers.unshift({route:t,callback:e})},checkUrl:function(t){var e=this.getFragment();if((e=e===this.fragment&&this.iframe?this.getHash(this.iframe.contentWindow):e)===this.fragment)return!1;this.iframe&&this.navigate(e),this.loadUrl()},loadUrl:function(e){return!!this.matchRoot()&&(e=this.fragment=this.getFragment(e),b.some(this.handlers,function(t){if(t.route.test(e))return t.callback(e),!0}))},navigate:function(t,e){if(!j.started)return!1;e&&!0!==e||(e={trigger:!!e}),t=this.getFragment(t||"");var i=this.root,n=(i=""===t||"?"===t.charAt(0)?i.slice(0,-1)||"/":i)+t;t=t.replace(z,"");i=this.decodeFragment(t);if(this.fragment!==i){if(this.fragment=i,this._usePushState)this.history[e.replace?"replaceState":"pushState"]({},document.title,n);else{if(!this._wantsHashChange)return this.location.assign(n);this._updateHash(this.location,t,e.replace),this.iframe&&t!==this.getHash(this.iframe.contentWindow)&&(n=this.iframe.contentWindow,e.replace||(n.document.open(),n.document.close()),this._updateHash(n.location,t,e.replace))}return e.trigger?this.loadUrl(t):void 0}},_updateHash:function(t,e,i){i?(i=t.href.replace(/(javascript:|#).*$/,""),t.replace(i+"#"+e)):t.hash="#"+e}}),h.history=new j;v.extend=m.extend=y.extend=e.extend=j.extend=function(t,e){var i=this,n=t&&b.has(t,"constructor")?t.constructor:function(){return i.apply(this,arguments)};return b.extend(n,i,e),n.prototype=b.create(i.prototype,t),(n.prototype.constructor=n).__super__=i.prototype,n};var q=function(){throw new Error('A "url" property or function must be specified')},F=function(e,i){var n=i.error;i.error=function(t){n&&n.call(i.context,e,t,i),e.trigger("error",e,t,i)}};return h});