From 3ca36cc469e838cee7d3fdcdc6ff39b35313a293 Mon Sep 17 00:00:00 2001
From: Jieiku
Date: Mon, 22 May 2023 23:13:34 -0700
Subject: js resilience

---
 static/abridge.min.js            |   2 +-
 static/search.js                 | 380 ++++++++++++++++++++-------------------
 static/search_elasticlunr.min.js |   2 +-
 static/theme_button.js           |  10 +-
 4 files changed, 201 insertions(+), 193 deletions(-)

(limited to 'static')

diff --git a/static/abridge.min.js b/static/abridge.min.js
index 907a86e..bd23e27 100644
--- a/static/abridge.min.js
+++ b/static/abridge.min.js
@@ -1 +1 @@
-const items=document.querySelectorAll(".preStyle");function closeSearchNow(){document.querySelector("main").innerHTML=window.main}function goSearchNow(){var e=document.querySelector("main"),t=(window.main||(window.main=e.innerHTML),document.getElementById("suggestions")),n=t.cloneNode(!0),o=(n.id="results",document.createElement("div")),i='<form name="closeSearch"><h2><button type="submit" title="Close Search"><i class="svgs x"></i></button> Results For: '.concat(document.getElementById("searchinput").value,"</h2></form>");return o.innerHTML=i,n.insertBefore(o,n.firstChild),e.innerHTML=n.outerHTML,t.innerHTML="",document.getElementById("searchinput").value="",document.body.contains(document.closeSearch)&&(document.closeSearch.onsubmit=function(){closeSearchNow()}),!1}items.forEach(e=>{e.rel="stylesheet"}),document.getElementById("mode").addEventListener("click",()=>{document.documentElement.classList.toggle("light"),localStorage.setItem("theme",document.documentElement.classList.contains("light")?"light":"dark")}),function(){function m(e){var t=new m.Index;return t.pipeline.add(m.trimmer,m.stopWordFilter,m.stemmer),e&&e.call(t,t),t}var l,c,e,t,d,h,f,p,g,y,v,S,x,w,b,E,I,C,D,F,N,L,k,_,n;m.version="0.9.5",((lunr=m).utils={}).warn=(n=this,function(e){n.console&&console.warn&&console.warn(e)}),m.utils.toString=function(e){return null==e?"":e.toString()},(m.EventEmitter=function(){this.events={}}).prototype.addListener=function(){var e=Array.prototype.slice.call(arguments),t=e.pop();if("function"!=typeof t)throw new TypeError("last argument must be a function");e.forEach(function(e){this.hasHandler(e)||(this.events[e]=[]),this.events[e].push(t)},this)},m.EventEmitter.prototype.removeListener=function(e,t){this.hasHandler(e)&&-1!==(t=this.events[e].indexOf(t))&&(this.events[e].splice(t,1),0==this.events[e].length)&&delete this.events[e]},m.EventEmitter.prototype.emit=function(e){var t;this.hasHandler(e)&&(t=Array.prototype.slice.call(arguments,1),this.events[e].forEach(function(e){e.apply(void 0,t)},this))},m.EventEmitter.prototype.hasHandler=function(e){return e in this.events},(m.tokenizer=function(e){var t,n;return arguments.length&&null!=e?Array.isArray(e)?(t=(t=e.filter(function(e){return null!=e})).map(function(e){return m.utils.toString(e).toLowerCase()}),n=[],t.forEach(function(e){e=e.split(m.tokenizer.seperator),n=n.concat(e)},this),n):e.toString().trim().toLowerCase().split(m.tokenizer.seperator):[]}).defaultSeperator=/[\s\-]+/,m.tokenizer.seperator=m.tokenizer.defaultSeperator,m.tokenizer.setSeperator=function(e){null!=e&&"object"==typeof e&&(m.tokenizer.seperator=e)},m.tokenizer.resetSeperator=function(){m.tokenizer.seperator=m.tokenizer.defaultSeperator},m.tokenizer.getSeperator=function(){return m.tokenizer.seperator},(m.Pipeline=function(){this._queue=[]}).registeredFunctions={},m.Pipeline.registerFunction=function(e,t){t in m.Pipeline.registeredFunctions&&m.utils.warn("Overwriting existing registered function: "+t),e.label=t,m.Pipeline.registeredFunctions[t]=e},m.Pipeline.getRegisteredFunction=function(e){return e in m.Pipeline.registeredFunctions!=1?null:m.Pipeline.registeredFunctions[e]},m.Pipeline.warnIfFunctionNotRegistered=function(e){e.label&&e.label in this.registeredFunctions||m.utils.warn("Function is not registered with pipeline. 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e.length<3||("y"==(n=e.substr(0,1))&&(e=n.toUpperCase()+e.substr(1)),u=y,(r=m).test(e)?e=e.replace(r,"$1$2"):u.test(e)&&(e=e.replace(u,"$1$2")),u=S,(r=v).test(e)?(l=r.exec(e),(r=d).test(l[1])&&(e=e.replace(r=x,""))):u.test(e)&&(s=(l=u.exec(e))[1],(u=p).test(s))&&(e=s,o=b,i=E,(u=w).test(e)?e+="e":o.test(e)?e=e.replace(r=x,""):i.test(e)&&(e+="e")),(r=I).test(e)&&(e=(s=(l=r.exec(e))[1])+"i"),(r=C).test(e)&&(s=(l=r.exec(e))[1],t=l[2],(r=d).test(s))&&(e=s+a[t]),(r=D).test(e)&&(s=(l=r.exec(e))[1],t=l[2],(r=d).test(s))&&(e=s+c[t]),u=N,(r=F).test(e)?(s=(l=r.exec(e))[1],(r=h).test(s)&&(e=s)):u.test(e)&&(s=(l=u.exec(e))[1]+l[2],(u=h).test(s))&&(e=s),(r=L).test(e)&&(s=(l=r.exec(e))[1],u=f,o=_,(r=h).test(s)||u.test(s)&&!o.test(s))&&(e=s),u=h,(r=k).test(e)&&u.test(e)&&(e=e.replace(r=x,"")),"y"==n&&(e=n.toLowerCase()+e.substr(1))),e},"stemmer"),g.stopWordFilter=function(e){return e&&!0!==g.stopWordFilter.stopWords[e]?e:void 0},g.clearStopWords=function(){g.stopWordFilter.stopWords={}},g.addStopWords=function(e){null!=e&&!1!==Array.isArray(e)&&e.forEach(function(e){g.stopWordFilter.stopWords[e]=!0},this)},g.resetStopWords=function(){g.stopWordFilter.stopWords=g.defaultStopWords},g.stopWordFilter.stopWords=g.defaultStopWords={"":!0,a:!0,able:!0,about:!0,across:!0,after:!0,all:!0,almost:!0,also:!0,am:!0,among:!0,an:!0,and:!0,any:!0,are:!0,as:!0,at:!0,be:!0,because:!0,been:!0,but:!0,by:!0,can:!0,cannot:!0,could:!0,dear:!0,did:!0,do:!0,does:!0,either:!0,else:!0,ever:!0,every:!0,for:!0,from:!0,get:!0,got:!0,had:!0,has:!0,have:!0,he:!0,her:!0,hers:!0,him:!0,his:!0,how:!0,however:!0,i:!0,if:!0,in:!0,into:!0,is:!0,it:!0,its:!0,just:!0,least:!0,let:!0,like:!0,likely:!0,may:!0,me:!0,might:!0,most:!0,must:!0,my:!0,neither:!0,no:!0,nor:!0,not:!0,of:!0,off:!0,often:!0,on:!0,only:!0,or:!0,other:!0,our:!0,own:!0,rather:!0,said:!0,say:!0,says:!0,she:!0,should:!0,since:!0,so:!0,some:!0,than:!0,that:!0,the:!0,their:!0,them:!0,then:!0,there:!0,these:!0,they:!0,this:!0,tis:!0,to:!0,too:!0,twas:!0,us:!0,wants:!0,was:!0,we:!0,were:!0,what:!0,when:!0,where:!0,which:!0,while:!0,who:!0,whom:!0,why:!0,will:!0,with:!0,would:!0,yet:!0,you:!0,your:!0},g.Pipeline.registerFunction(g.stopWordFilter,"stopWordFilter"),g.Pipeline.registerFunction(g.trimmer=function(e){if(null==e)throw new Error("token should not be undefined");return e.replace(/^\W+/,"").replace(/\W+$/,"")},"trimmer"),(g.InvertedIndex=function(){this.root={docs:{},df:0}}).load=function(e){var t=new this;return t.root=e.root,t},g.InvertedIndex.prototype.addToken=function(e,t,n){for(var n=n||this.root,o=0;o<=e.length-1;){var i=e[o];i in n||(n[i]={docs:{},df:0}),o+=1,n=n[i]}var r=t.ref;n.docs[r]?n.docs[r]={tf:t.tf}:(n.docs[r]={tf:t.tf},n.df+=1)},g.InvertedIndex.prototype.hasToken=function(e){if(!e)return!1;for(var t=this.root,n=0;n<e.length;n++){if(!t[e[n]])return!1;t=t[e[n]]}return!0},g.InvertedIndex.prototype.getNode=function(e){if(!e)return null;for(var t=this.root,n=0;n<e.length;n++){if(!t[e[n]])return null;t=t[e[n]]}return t},g.InvertedIndex.prototype.getDocs=function(e){return null==(e=this.getNode(e))?{}:e.docs},g.InvertedIndex.prototype.getTermFrequency=function(e,t){return null!=(e=this.getNode(e))&&t in e.docs?e.docs[t].tf:0},g.InvertedIndex.prototype.getDocFreq=function(e){return null==(e=this.getNode(e))?0:e.df},g.InvertedIndex.prototype.removeToken=function(e,t){e&&null!=(e=this.getNode(e))&&t in e.docs&&(delete e.docs[t],--e.df)},g.InvertedIndex.prototype.expandToken=function(e,t,n){if(null==e||""==e)return[];if(t=t||[],null!=n||null!=(n=this.getNode(e)))for(var o in 0<n.df&&t.push(e),n)"docs"!==o&&"df"!==o&&this.expandToken(e+o,t,n[o]);return t},g.InvertedIndex.prototype.toJSON=function(){return{root:this.root}},(g.Configuration=function(e,t){var n,e=e||"";if(null==t)throw new Error("fields should not be null");this.config={};try{n=JSON.parse(e),this.buildUserConfig(n,t)}catch(e){g.utils.warn("user configuration parse failed, will use default configuration"),this.buildDefaultConfig(t)}}).prototype.buildDefaultConfig=function(e){this.reset(),e.forEach(function(e){this.config[e]={boost:1,bool:"OR",expand:!1}},this)},g.Configuration.prototype.buildUserConfig=function(e,t){var n,o,i="OR",r=!1;if(this.reset(),"bool"in e&&(i=e.bool||i),"expand"in e&&(r=e.expand||r),"fields"in e)for(var s in e.fields)-1<t.indexOf(s)?(o=r,null!=(n=e.fields[s]).expand&&(o=n.expand),this.config[s]={boost:n.boost||0===n.boost?n.boost:1,bool:n.bool||i,expand:o}):g.utils.warn("field name in user configuration not found in index instance fields");else this.addAllFields2UserConfig(i,r,t)},g.Configuration.prototype.addAllFields2UserConfig=function(t,n,e){e.forEach(function(e){this.config[e]={boost:1,bool:t,expand:n}},this)},g.Configuration.prototype.get=function(){return this.config},g.Configuration.prototype.reset=function(){this.config={}},lunr.SortedSet=function(){this.length=0,this.elements=[]},lunr.SortedSet.load=function(e){var t=new this;return t.elements=e,t.length=e.length,t},lunr.SortedSet.prototype.add=function(){for(var e,t=0;t<arguments.length;t++)~this.indexOf(e=arguments[t])||this.elements.splice(this.locationFor(e),0,e);this.length=this.elements.length},lunr.SortedSet.prototype.toArray=function(){return this.elements.slice()},lunr.SortedSet.prototype.map=function(e,t){return this.elements.map(e,t)},lunr.SortedSet.prototype.forEach=function(e,t){return this.elements.forEach(e,t)},lunr.SortedSet.prototype.indexOf=function(e){for(var t=0,n=this.elements.length,o=n-t,i=t+Math.floor(o/2),r=this.elements[i];1<o;){if(r===e)return i;o=(n=e<r?i:n)-(t=r<e?i:t),i=t+Math.floor(o/2),r=this.elements[i]}return r===e?i:-1},lunr.SortedSet.prototype.locationFor=function(e){for(var t=0,n=this.elements.length,o=n-t,i=t+Math.floor(o/2),r=this.elements[i];1<o;)o=(n=e<r?i:n)-(t=r<e?i:t),i=t+Math.floor(o/2),r=this.elements[i];return e<r?i:r<e?i+1:void 0},lunr.SortedSet.prototype.intersect=function(e){for(var t=new lunr.SortedSet,n=0,o=0,i=this.length,r=e.length,s=this.elements,u=e.elements;!(i-1<n||r-1<o);)s[n]!==u[o]?s[n]<u[o]?n++:s[n]>u[o]&&o++:(t.add(s[n]),n++,o++);return t},lunr.SortedSet.prototype.clone=function(){var e=new lunr.SortedSet;return e.elements=this.toArray(),e.length=e.elements.length,e},lunr.SortedSet.prototype.union=function(e){for(var t,e=this.length>=e.length?(t=this,e):(t=e,this),n=t.clone(),o=0,i=e.toArray();o<i.length;o++)n.add(i[o]);return n},lunr.SortedSet.prototype.toJSON=function(){return this.toArray()},"function"==typeof define&&define.amd?define(function(){return g}):"object"==typeof exports?module.exports=g:this.elasticlunr=g}(),window.onload=function(){var s,e,u,l,c;document.body.contains(document.goSearch)&&(document.goSearch.onsubmit=function(){return goSearchNow()},s=document.getElementById("suggestions"),e=document.getElementById("searchinput"),document.addEventListener("keydown",inputFocus),document.addEventListener("click",function(e){s.contains(e.target)||s.classList.add("d-none")}),l=document.documentElement.getAttribute("lang").substring(0,2),"/"==(c=document.querySelector("meta[name='base']").getAttribute("content")).slice(-1)&&(c=c.slice(0,-1)),e.addEventListener("input",async function(){var n,e=this.value.trim(),o=(await(u=void 0===u?fetch(c+"/search_index."+l+".json").then(async function(e){return elasticlunr.Index.load(await e.json())}):u)).search(e,{bool:"OR",fields:{title:{boost:2},body:{boost:1}}}),i=s.childNodes,r=o.length,x=e.split(/\s+/);for(s.classList.remove("d-none"),o.forEach(function(e){""!==e.doc.body&&((n=document.createElement("div")).innerHTML="<a href><span></span><span></span></a>",a=n.querySelector("a"),t=n.querySelector("span:first-child"),d=n.querySelector("span:nth-child(2)"),a.href=e.ref,t.textContent=e.doc.title,d.innerHTML=function(e){var t=x.map(function(e){return elasticlunr.stemmer(e.toLowerCase())}),n=!1,o=0,i=[],r=e.toLowerCase().split(". ");for(f in r){var s,u=r[f].split(/[\s\n]/),l=8;for(s in u){if(0<(g=u[s]).length){for(var a in t)elasticlunr.stemmer(g).startsWith(t[a])&&(l=40,n=!0);i.push([g,l,o]),l=2}o=o+g.length+1}o+=1}if(0===i.length)return void 0!==e.length&&300<e.length?e.substring(0,300)+"...":e;for(var c=[],d=Math.min(i.length,30),h=0,f=0;f<d;f++)h+=i[f][1];for(c.push(h),f=0;f<i.length-d;f++)h=(h-=i[f][1])+i[f+d][1],c.push(h);var p=0;if(n)for(var m=0,f=c.length-1;0<=f;f--)m<c[f]&&(m=c[f],p=f);for(var g,y,v=[],S=i[p][2],f=p;f<p+d;f++)S<(g=i[f])[2]&&(v.push(e.substring(S,g[2])),S=g[2]),40===g[1]&&v.push("<b>"),S=g[2]+g[0].length,40!==g[1]&&12<=g[0].length&&!/^[\x00-\xff]+$/.test(g[0])?(y=substringByByte(e.substring(g[2],S),12),v.push(y)):v.push(e.substring(g[2],S)),40===g[1]&&v.push("</b>");return v.push("…"),v.join("")}(e.doc.body),s.appendChild(n))});i.length>r;)s.removeChild(i[0])},!0),s.addEventListener("click",function(){for(;s.lastChild;)s.removeChild(s.lastChild);return!1},!0),document.goSearch.onsubmit=function(){return goSearchNow()})},function(){for(var e=document.getElementsByClassName("m-protected"),t=0;t<e.length;t++){var n=e[t].getAttribute("href"),n=atob(n.substring(1));e[t].href="mailto:"+n}}(),function(){function t(e){const t=document.createElement("button");t.className="cc ",t.type="button",t.innerHTML="Copy",t.addEventListener("click",()=>async function(e,t){var n=t.querySelectorAll("table")["length"];let o="";0<n?t.querySelectorAll(":last-child > tr > td:last-child").forEach(e=>{o+=e.innerText}):o=t.querySelector(":last-child > code").innerText;try{"granted"==(result=await navigator.permissions.query({name:"clipboard-write"})).state||"prompt"==result.state?await navigator.clipboard.writeText(o):i(o,t)}catch(e){i(o,t)}finally{e.innerHTML="Copied",setTimeout(function(){e.innerHTML="Copy"},2e3)}}(t,e));var n=document.createElement("div");n.className="ccw",n.appendChild(t),e.parentNode.insertBefore(n,e),n.appendChild(e)}function i(e,t){var n=document.createElement("textArea"),e=(n.contentEditable="true",n.readOnly="false",n.className="copyable-text-area",n.value=e,t.insertBefore(n,t.firstChild),document.createRange()),o=(e.selectNodeContents(n),window.getSelection());o.removeAllRanges(),o.addRange(e),n.setSelectionRange(0,999999),document.execCommand("copy"),t.removeChild(n)}document.querySelectorAll("pre").forEach(e=>t(e))}();
\ No newline at end of file
diff --git a/static/search.js b/static/search.js
index 544ca07..da46986 100644
--- a/static/search.js
+++ b/static/search.js
@@ -3,6 +3,7 @@ function closeSearchNow() {
     const main = document.querySelector("main");
     main.innerHTML = window.main
 }
+
 function goSearchNow() {
     const main = document.querySelector("main");
     if (!window.main) {
@@ -27,13 +28,6 @@ function goSearchNow() {
     document.body.contains(document.closeSearch) && (document.closeSearch.onsubmit = function() { closeSearchNow() })
     return false
 }
-window.onload = function() {
-    document.body.contains(document.goSearch) && (document.goSearch.onsubmit = function() { return goSearchNow() })
-};
-
-// Everything Below this line For Suggestsions as you type in search box
-var suggestions = document.getElementById("suggestions");
-var searchinput = document.getElementById("searchinput");
 
 /* Close search suggestion popup list */
 function closeAllLists(elmnt) {
@@ -82,9 +76,6 @@ function inputFocus(e) {
 
 }
 
-document.addEventListener("keydown", inputFocus);
-document.addEventListener("click", function(event) {suggestions.contains(event.target) || suggestions.classList.add("d-none")});
-
 // Get substring by bytes
 // If using JavaScript inline substring method, it will return error codes
 // Source: https://www.52pojie.cn/thread-1059814-1-1.html
@@ -156,208 +147,223 @@ function getByteByHex(hexCode) {
   return getByteByBinary(parseInt(hexCode, 16).toString(2));
 }
 
-/*
-Source:
-  - https://github.com/nextapps-de/flexsearch#index-documents-field-search
-  - https://raw.githack.com/nextapps-de/flexsearch/master/demo/autocomplete.html
-  - http://elasticlunr.com/
-  - https://github.com/getzola/zola/blob/master/docs/static/search.js
-  - https://github.com/aaranxu/adidoks/blob/main/static/js/search.js
-*/
-(function(){
-  var lang = document.documentElement.getAttribute("lang");
-  var langOnly = lang.substring(0, 2);
-  var baseUrl = document.querySelector("meta[name='base']").getAttribute("content");
-  if (baseUrl.slice(-1) == "/") {
-      baseUrl = baseUrl.slice(0, -1);
-  }
+window.onload = function() {
+    if (document.body.contains(document.goSearch)) {
+      document.goSearch.onsubmit = function() { return goSearchNow() };
+      var suggestions = document.getElementById("suggestions");
+      var searchinput = document.getElementById("searchinput");
+      document.addEventListener("keydown", inputFocus);
+      document.addEventListener("click", function(event) {suggestions.contains(event.target) || suggestions.classList.add("d-none")});
+
+      /*
+      Source:
+        - https://github.com/nextapps-de/flexsearch#index-documents-field-search
+        - https://raw.githack.com/nextapps-de/flexsearch/master/demo/autocomplete.html
+        - http://elasticlunr.com/
+        - https://github.com/getzola/zola/blob/master/docs/static/search.js
+        - https://github.com/aaranxu/adidoks/blob/main/static/js/search.js
+      */
+      (function(){
+        var lang = document.documentElement.getAttribute("lang");
+        var langOnly = lang.substring(0, 2);
+        var baseUrl = document.querySelector("meta[name='base']").getAttribute("content");
+        if (baseUrl.slice(-1) == "/") {
+            baseUrl = baseUrl.slice(0, -1);
+        }
 
-  var index;
-  searchinput.addEventListener('input', show_results, true);
-  suggestions.addEventListener('click', accept_suggestion, true);
-
-  async function show_results(){
-    var initIndex = async function () {
-      if (index === undefined) {
-        index = fetch(baseUrl + '/search_index.' + langOnly + '.json')
-          .then(
-            async function(response) {
-              return await elasticlunr.Index.load(await response.json());
+        var index;
+        searchinput.addEventListener('input', show_results, true);
+        suggestions.addEventListener('click', accept_suggestion, true);
+
+        async function show_results(){
+          var initIndex = async function () {
+            if (index === undefined) {
+              index = fetch(baseUrl + '/search_index.' + langOnly + '.json')
+                .then(
+                  async function(response) {
+                    return await elasticlunr.Index.load(await response.json());
+                }
+              );
+            }
+            let res = await index;
+            return res;
           }
-        );
-      }
-      let res = await index;
-      return res;
-    }
-    var value = this.value.trim();
-    var options = {
-      bool: "OR",
-      fields: {
-        title: {boost: 2},
-        body: {boost: 1},
-      }
-    };
-    //var results = index.search(value, options);
-    var results = (await initIndex()).search(value, options);
+          var value = this.value.trim();
+          var options = {
+            bool: "OR",
+            fields: {
+              title: {boost: 2},
+              body: {boost: 1},
+            }
+          };
+          //var results = index.search(value, options);
+          var results = (await initIndex()).search(value, options);
 
-    var entry, childs = suggestions.childNodes;
-    var i = 0, len = results.length;
-    var items = value.split(/\s+/);
-    suggestions.classList.remove('d-none');
+          var entry, childs = suggestions.childNodes;
+          var i = 0, len = results.length;
+          var items = value.split(/\s+/);
+          suggestions.classList.remove('d-none');
 
-    results.forEach(function(page) {
-      if (page.doc.body !== '') {
-        entry = document.createElement('div');
+          results.forEach(function(page) {
+            if (page.doc.body !== '') {
+              entry = document.createElement('div');
 
-        entry.innerHTML = '<a href><span></span><span></span></a>';
+              entry.innerHTML = '<a href><span></span><span></span></a>';
 
-        a = entry.querySelector('a'),
-        t = entry.querySelector('span:first-child'),
-        d = entry.querySelector('span:nth-child(2)');
-        a.href = page.ref;
-        t.textContent = page.doc.title;
-        d.innerHTML = makeTeaser(page.doc.body, items);
+              a = entry.querySelector('a'),
+              t = entry.querySelector('span:first-child'),
+              d = entry.querySelector('span:nth-child(2)');
+              a.href = page.ref;
+              t.textContent = page.doc.title;
+              d.innerHTML = makeTeaser(page.doc.body, items);
 
-        suggestions.appendChild(entry);
-      }
-    });
+              suggestions.appendChild(entry);
+            }
+          });
 
-    while(childs.length > len){
-        suggestions.removeChild(childs[i])
-    }
+          while(childs.length > len){
+              suggestions.removeChild(childs[i])
+          }
 
-  }
+        }
 
-  function accept_suggestion(){
+        function accept_suggestion(){
 
-      while(suggestions.lastChild){
+            while(suggestions.lastChild){
 
-          suggestions.removeChild(suggestions.lastChild);
-      }
+                suggestions.removeChild(suggestions.lastChild);
+            }
 
-      return false;
-  }
+            return false;
+        }
 
-  // Taken from mdbook
-  // The strategy is as follows:
-  // First, assign a value to each word in the document:
-  //  Words that correspond to search terms (stemmer aware): 40
-  //  Normal words: 2
-  //  First word in a sentence: 8
-  // Then use a sliding window with a constant number of words and count the
-  // sum of the values of the words within the window. Then use the window that got the
-  // maximum sum. If there are multiple maximas, then get the last one.
-  // Enclose the terms in <b>.
-  function makeTeaser(body, terms) {
-    var TERM_WEIGHT = 40;
-    var NORMAL_WORD_WEIGHT = 2;
-    var FIRST_WORD_WEIGHT = 8;
-    var TEASER_MAX_WORDS = 30;
-
-    var stemmedTerms = terms.map(function (w) {
-      return elasticlunr.stemmer(w.toLowerCase());
-    });
-    var termFound = false;
-    var index = 0;
-    var weighted = []; // contains elements of ["word", weight, index_in_document]
-
-    // split in sentences, then words
-    var sentences = body.toLowerCase().split(". ");
-    for (var i in sentences) {
-      var words = sentences[i].split(/[\s\n]/);
-      var value = FIRST_WORD_WEIGHT;
-      for (var j in words) {
-
-        var word = words[j];
-
-        if (word.length > 0) {
-          for (var k in stemmedTerms) {
-            if (elasticlunr.stemmer(word).startsWith(stemmedTerms[k])) {
-              value = TERM_WEIGHT;
-              termFound = true;
+        /* Taken from mdbook
+        // The strategy is as follows:
+        // First, assign a value to each word in the document:
+        //  Words that correspond to search terms (stemmer aware): 40
+        //  Normal words: 2
+        //  First word in a sentence: 8
+        // Then use a sliding window with a constant number of words and count the
+        // sum of the values of the words within the window. Then use the window that got the
+        // maximum sum. If there are multiple maximas, then get the last one.
+        // Enclose the terms in <b>.
+        */
+        function makeTeaser(body, terms) {
+          var TERM_WEIGHT = 40;
+          var NORMAL_WORD_WEIGHT = 2;
+          var FIRST_WORD_WEIGHT = 8;
+          var TEASER_MAX_WORDS = 30;
+
+          var stemmedTerms = terms.map(function (w) {
+            return elasticlunr.stemmer(w.toLowerCase());
+          });
+          var termFound = false;
+          var index = 0;
+          var weighted = []; // contains elements of ["word", weight, index_in_document]
+
+          // split in sentences, then words
+          var sentences = body.toLowerCase().split(". ");
+          for (var i in sentences) {
+            var words = sentences[i].split(/[\s\n]/);
+            var value = FIRST_WORD_WEIGHT;
+            for (var j in words) {
+
+              var word = words[j];
+
+              if (word.length > 0) {
+                for (var k in stemmedTerms) {
+                  if (elasticlunr.stemmer(word).startsWith(stemmedTerms[k])) {
+                    value = TERM_WEIGHT;
+                    termFound = true;
+                  }
+                }
+                weighted.push([word, value, index]);
+                value = NORMAL_WORD_WEIGHT;
+              }
+
+              index += word.length;
+              index += 1;  // ' ' or '.' if last word in sentence
             }
+
+            index += 1;  // because we split at a two-char boundary '. '
           }
-          weighted.push([word, value, index]);
-          value = NORMAL_WORD_WEIGHT;
-        }
 
-        index += word.length;
-        index += 1;  // ' ' or '.' if last word in sentence
-      }
+          if (weighted.length === 0) {
+            if (body.length !== undefined && body.length > TEASER_MAX_WORDS * 10) {
+              return body.substring(0, TEASER_MAX_WORDS * 10) + '...';
+            } else {
+              return body;
+            }
+          }
 
-      index += 1;  // because we split at a two-char boundary '. '
-    }
+          var windowWeights = [];
+          var windowSize = Math.min(weighted.length, TEASER_MAX_WORDS);
+          // We add a window with all the weights first
+          var curSum = 0;
+          for (var i = 0; i < windowSize; i++) {
+            curSum += weighted[i][1];
+          }
+          windowWeights.push(curSum);
 
-    if (weighted.length === 0) {
-      if (body.length !== undefined && body.length > TEASER_MAX_WORDS * 10) {
-        return body.substring(0, TEASER_MAX_WORDS * 10) + '...';
-      } else {
-        return body;
-      }
-    }
+          for (var i = 0; i < weighted.length - windowSize; i++) {
+            curSum -= weighted[i][1];
+            curSum += weighted[i + windowSize][1];
+            windowWeights.push(curSum);
+          }
 
-    var windowWeights = [];
-    var windowSize = Math.min(weighted.length, TEASER_MAX_WORDS);
-    // We add a window with all the weights first
-    var curSum = 0;
-    for (var i = 0; i < windowSize; i++) {
-      curSum += weighted[i][1];
-    }
-    windowWeights.push(curSum);
+          // If we didn't find the term, just pick the first window
+          var maxSumIndex = 0;
+          if (termFound) {
+            var maxFound = 0;
+            // backwards
+            for (var i = windowWeights.length - 1; i >= 0; i--) {
+              if (windowWeights[i] > maxFound) {
+                maxFound = windowWeights[i];
+                maxSumIndex = i;
+              }
+            }
+          }
 
-    for (var i = 0; i < weighted.length - windowSize; i++) {
-      curSum -= weighted[i][1];
-      curSum += weighted[i + windowSize][1];
-      windowWeights.push(curSum);
-    }
+          var teaser = [];
+          var startIndex = weighted[maxSumIndex][2];
+          for (var i = maxSumIndex; i < maxSumIndex + windowSize; i++) {
+            var word = weighted[i];
+            if (startIndex < word[2]) {
+              // missing text from index to start of `word`
+              teaser.push(body.substring(startIndex, word[2]));
+              startIndex = word[2];
+            }
+
+            // add <em/> around search terms
+            if (word[1] === TERM_WEIGHT) {
+              teaser.push("<b>");
+            }
+
+            startIndex = word[2] + word[0].length;
+            // Check the string is ascii characters or not
+            var re = /^[\x00-\xff]+$/
+            if (word[1] !== TERM_WEIGHT && word[0].length >= 12 && !re.test(word[0])) {
+              // If the string's length is too long, it maybe a Chinese/Japance/Korean article
+              // if using substring method directly, it may occur error codes on emoji chars
+              var strBefor = body.substring(word[2], startIndex);
+              var strAfter = substringByByte(strBefor, 12);
+              teaser.push(strAfter);
+            } else {
+              teaser.push(body.substring(word[2], startIndex));
+            }
 
-    // If we didn't find the term, just pick the first window
-    var maxSumIndex = 0;
-    if (termFound) {
-      var maxFound = 0;
-      // backwards
-      for (var i = windowWeights.length - 1; i >= 0; i--) {
-        if (windowWeights[i] > maxFound) {
-          maxFound = windowWeights[i];
-          maxSumIndex = i;
+            if (word[1] === TERM_WEIGHT) {
+              teaser.push("</b>");
+            }
+          }
+          teaser.push("…");
+          return teaser.join("");
         }
-      }
+        document.goSearch.onsubmit = function() { return goSearchNow() };
+      }());
     }
+};
 
-    var teaser = [];
-    var startIndex = weighted[maxSumIndex][2];
-    for (var i = maxSumIndex; i < maxSumIndex + windowSize; i++) {
-      var word = weighted[i];
-      if (startIndex < word[2]) {
-        // missing text from index to start of `word`
-        teaser.push(body.substring(startIndex, word[2]));
-        startIndex = word[2];
-      }
 
-      // add <em/> around search terms
-      if (word[1] === TERM_WEIGHT) {
-        teaser.push("<b>");
-      }
 
-      startIndex = word[2] + word[0].length;
-      // Check the string is ascii characters or not
-      var re = /^[\x00-\xff]+$/
-      if (word[1] !== TERM_WEIGHT && word[0].length >= 12 && !re.test(word[0])) {
-        // If the string's length is too long, it maybe a Chinese/Japance/Korean article
-        // if using substring method directly, it may occur error codes on emoji chars
-        var strBefor = body.substring(word[2], startIndex);
-        var strAfter = substringByByte(strBefor, 12);
-        teaser.push(strAfter);
-      } else {
-        teaser.push(body.substring(word[2], startIndex));
-      }
 
-      if (word[1] === TERM_WEIGHT) {
-        teaser.push("</b>");
-      }
-    }
-    teaser.push("…");
-    return teaser.join("");
-  }
-document.body.contains(document.goSearch) && (document.goSearch.onsubmit = function() { return goSearchNow() })
-}());
diff --git a/static/search_elasticlunr.min.js b/static/search_elasticlunr.min.js
index 21a5acd..9493448 100644
--- a/static/search_elasticlunr.min.js
+++ b/static/search_elasticlunr.min.js
@@ -1 +1 @@
-function closeSearchNow(){document.querySelector("main").innerHTML=window.main}function goSearchNow(){var e=document.querySelector("main"),t=(window.main||(window.main=e.innerHTML),document.getElementById("suggestions")),n=t.cloneNode(!0),o=(n.id="results",document.createElement("div")),i='<form name="closeSearch"><h2><button type="submit" title="Close Search"><i class="svgs x"></i></button> Results For: '.concat(document.getElementById("searchinput").value,"</h2></form>");return o.innerHTML=i,n.insertBefore(o,n.firstChild),e.innerHTML=n.outerHTML,t.innerHTML="",document.getElementById("searchinput").value="",document.body.contains(document.closeSearch)&&(document.closeSearch.onsubmit=function(){closeSearchNow()}),!1}!function(){function m(e){var t=new m.Index;return t.pipeline.add(m.trimmer,m.stopWordFilter,m.stemmer),e&&e.call(t,t),t}var l,c,e,t,d,h,f,p,g,y,v,S,x,w,b,I,E,D,F,C,_,k,N,L,n;m.version="0.9.5",((lunr=m).utils={}).warn=(n=this,function(e){n.console&&console.warn&&console.warn(e)}),m.utils.toString=function(e){return null==e?"":e.toString()},(m.EventEmitter=function(){this.events={}}).prototype.addListener=function(){var e=Array.prototype.slice.call(arguments),t=e.pop();if("function"!=typeof t)throw new TypeError("last argument must be a function");e.forEach(function(e){this.hasHandler(e)||(this.events[e]=[]),this.events[e].push(t)},this)},m.EventEmitter.prototype.removeListener=function(e,t){this.hasHandler(e)&&-1!==(t=this.events[e].indexOf(t))&&(this.events[e].splice(t,1),0==this.events[e].length)&&delete this.events[e]},m.EventEmitter.prototype.emit=function(e){var t;this.hasHandler(e)&&(t=Array.prototype.slice.call(arguments,1),this.events[e].forEach(function(e){e.apply(void 0,t)},this))},m.EventEmitter.prototype.hasHandler=function(e){return e in this.events},(m.tokenizer=function(e){var t,n;return arguments.length&&null!=e?Array.isArray(e)?(t=(t=e.filter(function(e){return null!=e})).map(function(e){return m.utils.toString(e).toLowerCase()}),n=[],t.forEach(function(e){e=e.split(m.tokenizer.seperator);n=n.concat(e)},this),n):e.toString().trim().toLowerCase().split(m.tokenizer.seperator):[]}).defaultSeperator=/[\s\-]+/,m.tokenizer.seperator=m.tokenizer.defaultSeperator,m.tokenizer.setSeperator=function(e){null!=e&&"object"==typeof e&&(m.tokenizer.seperator=e)},m.tokenizer.resetSeperator=function(){m.tokenizer.seperator=m.tokenizer.defaultSeperator},m.tokenizer.getSeperator=function(){return m.tokenizer.seperator},(m.Pipeline=function(){this._queue=[]}).registeredFunctions={},m.Pipeline.registerFunction=function(e,t){t in m.Pipeline.registeredFunctions&&m.utils.warn("Overwriting existing registered function: "+t),e.label=t,m.Pipeline.registeredFunctions[t]=e},m.Pipeline.getRegisteredFunction=function(e){return e in m.Pipeline.registeredFunctions!=1?null:m.Pipeline.registeredFunctions[e]},m.Pipeline.warnIfFunctionNotRegistered=function(e){e.label&&e.label in this.registeredFunctions||m.utils.warn("Function is not registered with pipeline. This may cause problems when serialising the index.\n",e)},m.Pipeline.load=function(e){var n=new m.Pipeline;return e.forEach(function(e){var t=m.Pipeline.getRegisteredFunction(e);if(!t)throw new Error("Cannot load un-registered function: "+e);n.add(t)}),n},m.Pipeline.prototype.add=function(){Array.prototype.slice.call(arguments).forEach(function(e){m.Pipeline.warnIfFunctionNotRegistered(e),this._queue.push(e)},this)},m.Pipeline.prototype.after=function(e,t){m.Pipeline.warnIfFunctionNotRegistered(t);e=this._queue.indexOf(e);if(-1===e)throw new Error("Cannot find existingFn");this._queue.splice(e+1,0,t)},m.Pipeline.prototype.before=function(e,t){m.Pipeline.warnIfFunctionNotRegistered(t);e=this._queue.indexOf(e);if(-1===e)throw new Error("Cannot find existingFn");this._queue.splice(e,0,t)},m.Pipeline.prototype.remove=function(e){e=this._queue.indexOf(e);-1!==e&&this._queue.splice(e,1)},m.Pipeline.prototype.run=function(e){for(var t=[],n=e.length,o=this._queue.length,i=0;i<n;i++){for(var r=e[i],s=0;s<o&&null!=(r=this._queue[s](r,i,e));s++);null!=r&&t.push(r)}return t},m.Pipeline.prototype.reset=function(){this._queue=[]},m.Pipeline.prototype.get=function(){return this._queue},m.Pipeline.prototype.toJSON=function(){return this._queue.map(function(e){return m.Pipeline.warnIfFunctionNotRegistered(e),e.label})},(m.Index=function(){this._fields=[],this._ref="id",this.pipeline=new m.Pipeline,this.documentStore=new m.DocumentStore,this.index={},this.eventEmitter=new m.EventEmitter,this._idfCache={},this.on("add","remove","update",function(){this._idfCache={}}.bind(this))}).prototype.on=function(){var e=Array.prototype.slice.call(arguments);return this.eventEmitter.addListener.apply(this.eventEmitter,e)},m.Index.prototype.off=function(e,t){return this.eventEmitter.removeListener(e,t)},m.Index.load=function(e){e.version!==m.version&&m.utils.warn("version mismatch: current "+m.version+" importing "+e.version);var t,n=new this;for(t in n._fields=e.fields,n._ref=e.ref,n.documentStore=m.DocumentStore.load(e.documentStore),n.pipeline=m.Pipeline.load(e.pipeline),n.index={},e.index)n.index[t]=m.InvertedIndex.load(e.index[t]);return n},m.Index.prototype.addField=function(e){return this._fields.push(e),this.index[e]=new m.InvertedIndex,this},m.Index.prototype.setRef=function(e){return this._ref=e,this},m.Index.prototype.saveDocument=function(e){return this.documentStore=new m.DocumentStore(e),this},m.Index.prototype.addDoc=function(r,e){var s;r&&(e=void 0===e||e,s=r[this._ref],this.documentStore.addDoc(s,r),this._fields.forEach(function(e){var t,n=this.pipeline.run(m.tokenizer(r[e])),o=(this.documentStore.addFieldLength(s,e,n.length),{});for(t in n.forEach(function(e){e in o?o[e]+=1:o[e]=1},this),o){var i=o[t],i=Math.sqrt(i);this.index[e].addToken(t,{ref:s,tf:i})}},this),e)&&this.eventEmitter.emit("add",r,this)},m.Index.prototype.removeDocByRef=function(e){e&&!1!==this.documentStore.isDocStored()&&this.documentStore.hasDoc(e)&&(e=this.documentStore.getDoc(e),this.removeDoc(e,!1))},m.Index.prototype.removeDoc=function(e,t){var n;e&&(t=void 0===t||t,n=e[this._ref],this.documentStore.hasDoc(n))&&(this.documentStore.removeDoc(n),this._fields.forEach(function(t){this.pipeline.run(m.tokenizer(e[t])).forEach(function(e){this.index[t].removeToken(e,n)},this)},this),t)&&this.eventEmitter.emit("remove",e,this)},m.Index.prototype.updateDoc=function(e,t){t=void 0===t||t;this.removeDocByRef(e[this._ref],!1),this.addDoc(e,!1),t&&this.eventEmitter.emit("update",e,this)},m.Index.prototype.idf=function(e,t){var n="@"+t+"/"+e;return Object.prototype.hasOwnProperty.call(this._idfCache,n)?this._idfCache[n]:(t=this.index[t].getDocFreq(e),e=1+Math.log(this.documentStore.length/(t+1)),this._idfCache[n]=e)},m.Index.prototype.getFields=function(){return this._fields.slice()},m.Index.prototype.search=function(e,t){if(!e)return[];e="string"==typeof e?{any:e}:JSON.parse(JSON.stringify(e));var n=null;null!=t&&(n=JSON.stringify(t));for(var o=new m.Configuration(n,this.getFields()).get(),i={},r=Object.keys(e),s=0;s<r.length;s++){var u=r[s];i[u]=this.pipeline.run(m.tokenizer(e[u]))}var a,l={};for(a in o){var c=i[a]||i.any;if(c){var d=this.fieldSearch(c,a,o),h=o[a].boost;for(p in d)d[p]=d[p]*h;for(p in d)p in l?l[p]+=d[p]:l[p]=d[p]}}var f,p,g=[];for(p in l)f={ref:p,score:l[p]},this.documentStore.hasDoc(p)&&(f.doc=this.documentStore.getDoc(p)),g.push(f);return g.sort(function(e,t){return t.score-e.score}),g},m.Index.prototype.fieldSearch=function(e,d,t){var h=t[d].bool,n=t[d].expand,t=t[d].boost,f=null,p={};return 0!==t?(e.forEach(function(l){var e=[l],c=(1==n&&(e=this.index[d].expandToken(l)),{});e.forEach(function(e){var t=this.index[d].getDocs(e),n=this.idf(e,d);if(f&&"AND"==h){var o,i={};for(o in f)o in t&&(i[o]=t[o]);t=i}for(o in e==l&&this.fieldSearchStats(p,e,t),t){var r=this.index[d].getTermFrequency(e,o),s=this.documentStore.getFieldLength(o,d),u=1,a=1,r=r*n*(u=0!=s?1/Math.sqrt(s):u)*(a=e!=l?.15*(1-(e.length-l.length)/e.length):a);o in c?c[o]+=r:c[o]=r}},this),f=this.mergeScores(f,c,h)},this),f=this.coordNorm(f,p,e.length)):void 0},m.Index.prototype.mergeScores=function(e,t,n){if(!e)return t;if("AND"==n){var o={};for(i in t)i in e&&(o[i]=e[i]+t[i]);return o}for(var i in t)i in e?e[i]+=t[i]:e[i]=t[i];return e},m.Index.prototype.fieldSearchStats=function(e,t,n){for(var o in n)o in e?e[o].push(t):e[o]=[t]},m.Index.prototype.coordNorm=function(e,t,n){for(var o in e){var i;o in t&&(i=t[o].length,e[o]=e[o]*i/n)}return e},m.Index.prototype.toJSON=function(){var t={};return this._fields.forEach(function(e){t[e]=this.index[e].toJSON()},this),{version:m.version,fields:this._fields,ref:this._ref,documentStore:this.documentStore.toJSON(),index:t,pipeline:this.pipeline.toJSON()}},m.Index.prototype.use=function(e){var t=Array.prototype.slice.call(arguments,1);t.unshift(this),e.apply(this,t)},(m.DocumentStore=function(e){this._save=null==e||e,this.docs={},this.docInfo={},this.length=0}).load=function(e){var t=new this;return t.length=e.length,t.docs=e.docs,t.docInfo=e.docInfo,t._save=e.save,t},m.DocumentStore.prototype.isDocStored=function(){return this._save},m.DocumentStore.prototype.addDoc=function(e,t){this.hasDoc(e)||this.length++,this.docs[e]=!0===this._save?function(e){if(null===e||"object"!=typeof e)return e;var t,n=e.constructor();for(t in e)e.hasOwnProperty(t)&&(n[t]=e[t]);return n}(t):null},m.DocumentStore.prototype.getDoc=function(e){return!1===this.hasDoc(e)?null:this.docs[e]},m.DocumentStore.prototype.hasDoc=function(e){return e in this.docs},m.DocumentStore.prototype.removeDoc=function(e){this.hasDoc(e)&&(delete this.docs[e],delete this.docInfo[e],this.length--)},m.DocumentStore.prototype.addFieldLength=function(e,t,n){null!=e&&0!=this.hasDoc(e)&&(this.docInfo[e]||(this.docInfo[e]={}),this.docInfo[e][t]=n)},m.DocumentStore.prototype.updateFieldLength=function(e,t,n){null!=e&&0!=this.hasDoc(e)&&this.addFieldLength(e,t,n)},m.DocumentStore.prototype.getFieldLength=function(e,t){return null!=e&&e in this.docs&&t in this.docInfo[e]?this.docInfo[e][t]:0},m.DocumentStore.prototype.toJSON=function(){return{docs:this.docs,docInfo:this.docInfo,length:this.length,save:this._save}},l={ational:"ate",tional:"tion",enci:"ence",anci:"ance",izer:"ize",bli:"ble",alli:"al",entli:"ent",eli:"e",ousli:"ous",ization:"ize",ation:"ate",ator:"ate",alism:"al",iveness:"ive",fulness:"ful",ousness:"ous",aliti:"al",iviti:"ive",biliti:"ble",logi:"log"},c={icate:"ic",ative:"",alize:"al",iciti:"ic",ical:"ic",ful:"",ness:""},e="[aeiouy]",t="[^aeiou][^aeiouy]*",d=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*"),h=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*[aeiouy][aeiou]*[^aeiou][^aeiouy]*"),f=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*([aeiouy][aeiou]*)?$"),p=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy]"),g=/^(.+?)(ss|i)es$/,y=/^(.+?)([^s])s$/,v=/^(.+?)eed$/,S=/^(.+?)(ed|ing)$/,x=/.$/,w=/(at|bl|iz)$/,b=new RegExp("([^aeiouylsz])\\1$"),I=new 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Object.prototype.hasOwnProperty.call(this._idfCache,n)?this._idfCache[n]:(t=this.index[t].getDocFreq(e),e=1+Math.log(this.documentStore.length/(t+1)),this._idfCache[n]=e)},m.Index.prototype.getFields=function(){return this._fields.slice()},m.Index.prototype.search=function(e,t){if(!e)return[];e="string"==typeof e?{any:e}:JSON.parse(JSON.stringify(e));var n=null;null!=t&&(n=JSON.stringify(t));for(var o=new m.Configuration(n,this.getFields()).get(),i={},r=Object.keys(e),s=0;s<r.length;s++){var u=r[s];i[u]=this.pipeline.run(m.tokenizer(e[u]))}var a,l={};for(a in o){var c=i[a]||i.any;if(c){var d=this.fieldSearch(c,a,o),h=o[a].boost;for(p in d)d[p]=d[p]*h;for(p in d)p in l?l[p]+=d[p]:l[p]=d[p]}}var f,p,g=[];for(p in l)f={ref:p,score:l[p]},this.documentStore.hasDoc(p)&&(f.doc=this.documentStore.getDoc(p)),g.push(f);return g.sort(function(e,t){return t.score-e.score}),g},m.Index.prototype.fieldSearch=function(e,d,t){var h=t[d].bool,n=t[d].expand,t=t[d].boost,f=null,p={};return 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this._fields.forEach(function(e){t[e]=this.index[e].toJSON()},this),{version:m.version,fields:this._fields,ref:this._ref,documentStore:this.documentStore.toJSON(),index:t,pipeline:this.pipeline.toJSON()}},m.Index.prototype.use=function(e){var t=Array.prototype.slice.call(arguments,1);t.unshift(this),e.apply(this,t)},(m.DocumentStore=function(e){this._save=null==e||e,this.docs={},this.docInfo={},this.length=0}).load=function(e){var t=new this;return t.length=e.length,t.docs=e.docs,t.docInfo=e.docInfo,t._save=e.save,t},m.DocumentStore.prototype.isDocStored=function(){return this._save},m.DocumentStore.prototype.addDoc=function(e,t){this.hasDoc(e)||this.length++,this.docs[e]=!0===this._save?function(e){if(null===e||"object"!=typeof e)return e;var t,n=e.constructor();for(t in e)e.hasOwnProperty(t)&&(n[t]=e[t]);return n}(t):null},m.DocumentStore.prototype.getDoc=function(e){return!1===this.hasDoc(e)?null:this.docs[e]},m.DocumentStore.prototype.hasDoc=function(e){return e in 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this.docInfo[e]?this.docInfo[e][t]:0},m.DocumentStore.prototype.toJSON=function(){return{docs:this.docs,docInfo:this.docInfo,length:this.length,save:this._save}},l={ational:"ate",tional:"tion",enci:"ence",anci:"ance",izer:"ize",bli:"ble",alli:"al",entli:"ent",eli:"e",ousli:"ous",ization:"ize",ation:"ate",ator:"ate",alism:"al",iveness:"ive",fulness:"ful",ousness:"ous",aliti:"al",iviti:"ive",biliti:"ble",logi:"log"},c={icate:"ic",ative:"",alize:"al",iciti:"ic",ical:"ic",ful:"",ness:""},e="[aeiouy]",t="[^aeiou][^aeiouy]*",d=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*"),h=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*[aeiouy][aeiou]*[^aeiou][^aeiouy]*"),f=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy][aeiou]*[^aeiou][^aeiouy]*([aeiouy][aeiou]*)?$"),p=new RegExp("^([^aeiou][^aeiouy]*)?[aeiouy]"),g=/^(.+?)(ss|i)es$/,y=/^(.+?)([^s])s$/,v=/^(.+?)eed$/,S=/^(.+?)(ed|ing)$/,x=/.$/,w=/(at|bl|iz)$/,b=new RegExp("([^aeiouylsz])\\1$"),I=new RegExp("^"+t+e+"[^aeiouwxy]$"),E=/^(.+?[^aeiou])y$/,D=/^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/,F=/^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/,C=/^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/,_=/^(.+?)(s|t)(ion)$/,k=/^(.+?)e$/,N=/ll$/,L=new RegExp("^"+t+e+"[^aeiouwxy]$"),m.Pipeline.registerFunction(m.stemmer=function(e){var t,n,o,i,r,s,u,a;return e.length<3||("y"==(n=e.substr(0,1))&&(e=n.toUpperCase()+e.substr(1)),u=y,(r=g).test(e)?e=e.replace(r,"$1$2"):u.test(e)&&(e=e.replace(u,"$1$2")),u=S,(r=v).test(e)?(a=r.exec(e),(r=d).test(a[1])&&(e=e.replace(r=x,""))):u.test(e)&&(s=(a=u.exec(e))[1],(u=p).test(s))&&(e=s,o=b,i=I,(u=w).test(e)?e+="e":o.test(e)?e=e.replace(r=x,""):i.test(e)&&(e+="e")),(r=E).test(e)&&(e=(s=(a=r.exec(e))[1])+"i"),(r=D).test(e)&&(s=(a=r.exec(e))[1],t=a[2],(r=d).test(s))&&(e=s+l[t]),(r=F).test(e)&&(s=(a=r.exec(e))[1],t=a[2],(r=d).test(s))&&(e=s+c[t]),u=_,(r=C).test(e)?(s=(a=r.exec(e))[1],(r=h).test(s)&&(e=s)):u.test(e)&&(s=(a=u.exec(e))[1]+a[2],(u=h).test(s))&&(e=s),(r=k).test(e)&&(s=(a=r.exec(e))[1],u=f,o=L,(r=h).test(s)||u.test(s)&&!o.test(s))&&(e=s),u=h,(r=N).test(e)&&u.test(e)&&(e=e.replace(r=x,"")),"y"==n&&(e=n.toLowerCase()+e.substr(1))),e},"stemmer"),m.stopWordFilter=function(e){return e&&!0!==m.stopWordFilter.stopWords[e]?e:void 0},m.clearStopWords=function(){m.stopWordFilter.stopWords={}},m.addStopWords=function(e){null!=e&&!1!==Array.isArray(e)&&e.forEach(function(e){m.stopWordFilter.stopWords[e]=!0},this)},m.resetStopWords=function(){m.stopWordFilter.stopWords=m.defaultStopWords},m.stopWordFilter.stopWords=m.defaultStopWords={"":!0,a:!0,able:!0,about:!0,across:!0,after:!0,all:!0,almost:!0,also:!0,am:!0,among:!0,an:!0,and:!0,any:!0,are:!0,as:!0,at:!0,be:!0,because:!0,been:!0,but:!0,by:!0,can:!0,cannot:!0,could:!0,dear:!0,did:!0,do:!0,does:!0,either:!0,else:!0,ever:!0,every:!0,for:!0,from:!0,get:!0,got:!0,had:!0,has:!0,have:!0,he:!0,her:!0,hers:!0,him:!0,his:!0,how:!0,however:!0,i:!0,if:!0,in:!0,into:!0,is:!0,it:!0,its:!0,just:!0,least:!0,let:!0,like:!0,likely:!0,may:!0,me:!0,might:!0,most:!0,must:!0,my:!0,neither:!0,no:!0,nor:!0,not:!0,of:!0,off:!0,often:!0,on:!0,only:!0,or:!0,other:!0,our:!0,own:!0,rather:!0,said:!0,say:!0,says:!0,she:!0,should:!0,since:!0,so:!0,some:!0,than:!0,that:!0,the:!0,their:!0,them:!0,then:!0,there:!0,these:!0,they:!0,this:!0,tis:!0,to:!0,too:!0,twas:!0,us:!0,wants:!0,was:!0,we:!0,were:!0,what:!0,when:!0,where:!0,which:!0,while:!0,who:!0,whom:!0,why:!0,will:!0,with:!0,would:!0,yet:!0,you:!0,your:!0},m.Pipeline.registerFunction(m.stopWordFilter,"stopWordFilter"),m.Pipeline.registerFunction(m.trimmer=function(e){if(null==e)throw new Error("token should not be undefined");return e.replace(/^\W+/,"").replace(/\W+$/,"")},"trimmer"),(m.InvertedIndex=function(){this.root={docs:{},df:0}}).load=function(e){var t=new this;return t.root=e.root,t},m.InvertedIndex.prototype.addToken=function(e,t,n){for(var n=n||this.root,o=0;o<=e.length-1;){var i=e[o];i in n||(n[i]={docs:{},df:0}),o+=1,n=n[i]}var r=t.ref;n.docs[r]?n.docs[r]={tf:t.tf}:(n.docs[r]={tf:t.tf},n.df+=1)},m.InvertedIndex.prototype.hasToken=function(e){if(!e)return!1;for(var t=this.root,n=0;n<e.length;n++){if(!t[e[n]])return!1;t=t[e[n]]}return!0},m.InvertedIndex.prototype.getNode=function(e){if(!e)return null;for(var t=this.root,n=0;n<e.length;n++){if(!t[e[n]])return null;t=t[e[n]]}return t},m.InvertedIndex.prototype.getDocs=function(e){e=this.getNode(e);return null==e?{}:e.docs},m.InvertedIndex.prototype.getTermFrequency=function(e,t){e=this.getNode(e);return null!=e&&t in e.docs?e.docs[t].tf:0},m.InvertedIndex.prototype.getDocFreq=function(e){e=this.getNode(e);return null==e?0:e.df},m.InvertedIndex.prototype.removeToken=function(e,t){e&&null!=(e=this.getNode(e))&&t in e.docs&&(delete e.docs[t],--e.df)},m.InvertedIndex.prototype.expandToken=function(e,t,n){if(null==e||""==e)return[];t=t||[];if(null!=n||null!=(n=this.getNode(e)))for(var o in 0<n.df&&t.push(e),n)"docs"!==o&&"df"!==o&&this.expandToken(e+o,t,n[o]);return t},m.InvertedIndex.prototype.toJSON=function(){return{root:this.root}},(m.Configuration=function(e,t){var n,e=e||"";if(null==t)throw new Error("fields should not be null");this.config={};try{n=JSON.parse(e),this.buildUserConfig(n,t)}catch(e){m.utils.warn("user configuration parse failed, will use default configuration"),this.buildDefaultConfig(t)}}).prototype.buildDefaultConfig=function(e){this.reset(),e.forEach(function(e){this.config[e]={boost:1,bool:"OR",expand:!1}},this)},m.Configuration.prototype.buildUserConfig=function(e,t){var n,o,i="OR",r=!1;if(this.reset(),"bool"in e&&(i=e.bool||i),"expand"in e&&(r=e.expand||r),"fields"in e)for(var s in e.fields)-1<t.indexOf(s)?(o=r,null!=(n=e.fields[s]).expand&&(o=n.expand),this.config[s]={boost:n.boost||0===n.boost?n.boost:1,bool:n.bool||i,expand:o}):m.utils.warn("field name in user configuration not found in index instance fields");else this.addAllFields2UserConfig(i,r,t)},m.Configuration.prototype.addAllFields2UserConfig=function(t,n,e){e.forEach(function(e){this.config[e]={boost:1,bool:t,expand:n}},this)},m.Configuration.prototype.get=function(){return this.config},m.Configuration.prototype.reset=function(){this.config={}},lunr.SortedSet=function(){this.length=0,this.elements=[]},lunr.SortedSet.load=function(e){var t=new this;return t.elements=e,t.length=e.length,t},lunr.SortedSet.prototype.add=function(){for(var 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\ No newline at end of file
diff --git a/static/theme_button.js b/static/theme_button.js
index d71c4fb..34d1d78 100644
--- a/static/theme_button.js
+++ b/static/theme_button.js
@@ -1,5 +1,7 @@
 // Set lightmode
-document.getElementById('mode').addEventListener('click', () => {
-  document.documentElement.classList.toggle('light');
-  localStorage.setItem('theme', document.documentElement.classList.contains('light') ? 'light' : 'dark');
-});
+if (document.getElementById('mode')) {
+  document.getElementById('mode').addEventListener('click', () => {
+    document.documentElement.classList.toggle('light');
+    localStorage.setItem('theme', document.documentElement.classList.contains('light') ? 'light' : 'dark');
+  });
+}
-- 
cgit v1.3.1