diff --git a/mithril.js b/mithril.js
index 68a0cb07..025d9f78 100644
--- a/mithril.js
+++ b/mithril.js
@@ -472,7 +472,9 @@ var _13 = function($window) {
 				while (oldEnd >= oldStart && end >= start) {
 					var o = old[oldStart], v = vnodes[start]
 					if (o === v && !recycling) oldStart++, start++
-					else if (o != null && v != null && o.key === v.key) {
+					else if (o == null) oldStart++
+					else if (v == null) start++
+					else if (o.key === v.key) {
 						oldStart++, start++
 						updateNode(parent, o, v, hooks, getNextSibling(old, oldStart, nextSibling), recycling, ns)
 						if (recycling && o.tag === v.tag) insertNode(parent, toFragment(o), nextSibling)
@@ -480,7 +482,9 @@ var _13 = function($window) {
 					else {
 						var o = old[oldEnd]
 						if (o === v && !recycling) oldEnd--, start++
-						else if (o != null && v != null && o.key === v.key) {
+						else if (o == null) oldEnd--
+						else if (v == null) start++
+						else if (o.key === v.key) {
 							updateNode(parent, o, v, hooks, getNextSibling(old, oldEnd + 1, nextSibling), recycling, ns)
 							if (recycling || start < end) insertNode(parent, toFragment(o), getNextSibling(old, oldStart, nextSibling))
 							oldEnd--, start++
@@ -491,7 +495,9 @@ var _13 = function($window) {
 				while (oldEnd >= oldStart && end >= start) {
 					var o = old[oldEnd], v = vnodes[end]
 					if (o === v && !recycling) oldEnd--, end--
-					else if (o != null && v != null && o.key === v.key) {
+					else if (o == null) oldEnd--
+					else if (v == null) end--
+					else if (o.key === v.key) {
 						updateNode(parent, o, v, hooks, getNextSibling(old, oldEnd + 1, nextSibling), recycling, ns)
 						if (recycling && o.tag === v.tag) insertNode(parent, toFragment(o), nextSibling)
 						if (o.dom != null) nextSibling = o.dom
diff --git a/mithril.min.js b/mithril.min.js
index 71078381..bdf1bb88 100644
--- a/mithril.min.js
+++ b/mithril.min.js
@@ -1,40 +1,40 @@
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+(null==e.dom&&(e.dom=a.dom),g+=a.domSize||1);1!==g&&(e.domSize=g)}break;default:a=x;q=e.dom=g.dom;switch(e.tag){case "svg":a="http://www.w3.org/2000/svg";break;case "math":a="http://www.w3.org/1998/Math/MathML"}"textarea"===e.tag&&(null==e.attrs&&(e.attrs={}),null!=e.text&&(e.attrs.value=e.text,e.text=void 0));u=g.attrs;x=e.attrs;c=a;if(null!=x)for(p in x)n(e,p,u&&u[p],x[p],c);if(null!=u)for(p in u)null!=x&&p in x||("className"===p&&(p="class"),"o"!==p[0]||"n"!==p[1]||K(p)?"key"!==p&&e.dom.removeAttribute(p):
+E(e,p,void 0));null!=e.attrs&&null!=e.attrs.contenteditable?z(e):null!=g.text&&null!=e.text&&""!==e.text?g.text.toString()!==e.text.toString()&&(g.dom.firstChild.nodeValue=e.text):(null!=g.text&&(g.children=[m("#",void 0,void 0,g.text,void 0,g.dom.firstChild)]),null!=e.text&&(e.children=[m("#",void 0,void 0,e.text,void 0,void 0)]),l(q,g.children,e.children,b,null,a))}else e.instance=m.normalize(e.tag.view.call(e.state,e)),L(e.tag,e,b,u),null!=e.instance?(null==g.instance?r(a,k(e.instance,b,x),q):
+h(a,g.instance,e.instance,b,q,u,x),e.dom=e.instance.dom,e.domSize=e.instance.domSize):null!=g.instance?(f(g.instance,null),e.dom=void 0,e.domSize=0):(e.dom=g.dom,e.domSize=g.domSize)}else f(g,null),r(a,k(e,b,x),q)}function w(a){var c=a.domSize;if(null!=c||null==a.dom){var e=A.createDocumentFragment();if(0<c){for(a=a.dom;--c;)e.appendChild(a.nextSibling);e.insertBefore(a,e.firstChild)}return e}return a.dom}function p(a,g,e){for(;g<a.length;g++)if(null!=a[g]&&null!=a[g].dom)return a[g].dom;return e}
+function r(a,g,e){e&&e.parentNode?a.insertBefore(g,e):a.appendChild(g)}function z(a){var c=a.children;if(null!=c&&1===c.length&&"<"===c[0].tag)c=c[0].children,a.dom.innerHTML!==c&&(a.dom.innerHTML=c);else if(null!=c||null!=a.text)throw Error("Child node of a contenteditable must be trusted");}function q(a,g,e,b){for(;g<e;g++){var c=a[g];null!=c&&(c.skip?c.skip=!1:f(c,b))}}function u(a){var c=!1;return function(){c||(c=!0,a())}}function f(a,g){function c(){if(++d===b&&(x(a),a.dom)){var c=a.domSize||
+1;if(1<c)for(var e=a.dom;--c;){var f=e.nextSibling,h=f.parentNode;null!=h&&h.removeChild(f)}c=a.dom;e=c.parentNode;null!=e&&e.removeChild(c);if(c=null!=g&&null==a.domSize)c=a.attrs,c=!(null!=c&&(c.oncreate||c.onupdate||c.onbeforeremove||c.onremove));c&&"string"===typeof a.tag&&(g.pool?g.pool.push(a):g.pool=[a])}}var b=1,d=0;a.attrs&&a.attrs.onbeforeremove&&(b++,a.attrs.onbeforeremove.call(a.state,a,u(c)));"string"!==typeof a.tag&&a.tag.onbeforeremove&&(b++,a.tag.onbeforeremove.call(a.state,a,u(c)));
+c()}function x(a){a.attrs&&a.attrs.onremove&&a.attrs.onremove.call(a.state,a);"string"!==typeof a.tag&&a.tag.onremove&&a.tag.onremove.call(a.state,a);if(null!=a.instance)x(a.instance);else if(a=a.children,a instanceof Array)for(var c=0;c<a.length;c++){var e=a[c];null!=e&&x(e)}}function n(a,g,e,b,d){var c=a.dom;if("key"!==g&&(e!==b||"value"===g||"checked"===g||"selectedIndex"===g||"selected"===g&&a.dom===A.activeElement||"object"===typeof b)&&"undefined"!==typeof b&&!K(g)){var f=g.indexOf(":");if(-1<
+f&&"xlink"===g.substr(0,f))c.setAttributeNS("http://www.w3.org/1999/xlink",g.slice(f+1),b);else if("o"===g[0]&&"n"===g[1]&&"function"===typeof b)E(a,g,b);else if("style"===g)if(a=e,a===b&&(c.style.cssText="",a=null),null==b)c.style.cssText="";else if("string"===typeof b)c.style.cssText=b;else{"string"===typeof a&&(c.style.cssText="");for(var h in b)c.style[h]=b[h];if(null!=a&&"string"!==typeof a)for(h in a)h in b||(c.style[h]="")}else g in c&&"href"!==g&&"list"!==g&&"form"!==g&&"width"!==g&&"height"!==
+g&&void 0===d?"input"===a.tag&&"value"===g&&a.dom.value===b&&a.dom===A.activeElement||"select"===a.tag&&"value"===g&&a.dom.value===b&&a.dom===A.activeElement||"option"===a.tag&&"value"===g&&a.dom.value===b||(c[g]=b):"boolean"===typeof b?b?c.setAttribute(g,""):c.removeAttribute(g):c.setAttribute("className"===g?"class":g,b)}}function K(a){return"oninit"===a||"oncreate"===a||"onupdate"===a||"onremove"===a||"onbeforeremove"===a||"onbeforeupdate"===a}function E(a,b,e){var c=a.dom,g=function(a){var b=
+e.call(c,a);"function"===typeof C&&C.call(c,a);return b};if(b in c)c[b]="function"===typeof e?g:null;else{var d=b.slice(2);void 0===a.events&&(a.events={});null!=a.events[b]&&c.removeEventListener(d,a.events[b],!1);"function"===typeof e&&(a.events[b]=g,c.addEventListener(d,a.events[b],!1))}}function t(a,b,e){"function"===typeof a.oninit&&a.oninit.call(b.state,b);"function"===typeof a.oncreate&&e.push(a.oncreate.bind(b.state,b))}function L(a,b,e,d){d?t(a,b,e):"function"===typeof a.onupdate&&e.push(a.onupdate.bind(b.state,
+b))}function O(a,b){Object.keys(b).forEach(function(c){a[c]=b[c]})}var A=a.document,F=A.createDocumentFragment(),C;return{render:function(a,b){if(!a)throw Error("Ensure the DOM element being passed to m.route/m.mount/m.render is not undefined.");var c=[],d=A.activeElement;null==a.vnodes&&(a.textContent="");b instanceof Array||(b=[b]);l(a,a.vnodes,m.normalizeChildren(b),c,null,void 0);a.vnodes=b;for(var f=0;f<c.length;f++)c[f]();A.activeElement!==d&&d.focus()},setEventCallback:function(a){return C=
+a}}}(window),P=function(a){var b=0,k=null,d="function"===typeof requestAnimationFrame?requestAnimationFrame:setTimeout;return function(l){var h=Date.now();!0===l||0===b||16<=h-b?(b=h,a()):null===k&&(k=d(function(){k=null;a();b=Date.now()},16-(h-b)))}},Q=function(a,b,k,d){d=P(d);null!=b&&b.setEventCallback(function(a){!1!==a.redraw&&k.publish()});null!=k&&(a.redraw&&k.unsubscribe(a.redraw),k.subscribe(d));return a.redraw=d};t.mount=function(a,b){return function(k,d){if(null===d)a.render(k,[]),b.unsubscribe(k.redraw),
+delete k.redraw;else{if(null==d.view)throw Error("m.mount(element, component) expects a component, not a vnode");Q(k,a,b,function(){a.render(k,m(d,void 0,void 0,void 0,void 0,void 0))})()}}}(M,I);var J=function(a){if(""===a||null==a)return{};"?"===a.charAt(0)&&(a=a.slice(1));a=a.split("&");for(var b={},k={},d=0;d<a.length;d++){var l=a[d].split("="),h=decodeURIComponent(l[0]),l=2===l.length?decodeURIComponent(l[1]):"";"true"===l?l=!0:"false"===l&&(l=!1);var m=h.split(/\]\[?|\[/),p=b;-1<h.indexOf("[")&&
+m.pop();for(var r=0;r<m.length;r++){var h=m[r],t=m[r+1],t=""==t||!isNaN(parseInt(t,10)),q=r===m.length-1;""===h&&(h=m.slice(0,r).join(),null==k[h]&&(k[h]=0),h=k[h]++);null==p[h]&&(p[h]=q?l:t?[]:{});p=p[h]}}return b},R=function(a){function b(b){var d=a.location[b].replace(/(?:%[a-f89][a-f0-9])+/gim,decodeURIComponent);"pathname"===b&&"/"!==d[0]&&(d="/"+d);return d}function k(a){return function(){null==t&&(t=p(function(){t=null;a()}))}}function d(a,b,d){var f=a.indexOf("?"),h=a.indexOf("#"),k=-1<f?
+f:-1<h?h:a.length;if(-1<f){var f=J(a.slice(f+1,-1<h?h:a.length)),l;for(l in f)b[l]=f[l]}if(-1<h)for(l in b=J(a.slice(h+1)),b)d[l]=b[l];return a.slice(0,k)}function l(){switch(r.charAt(0)){case "#":return b("hash").slice(r.length);case "?":return b("search").slice(r.length)+b("hash");default:return b("pathname").slice(r.length)+b("search")+b("hash")}}function h(b,h,f){var k={},n={};b=d(b,k,n);if(null!=h){for(var l in h)k[l]=h[l];b=b.replace(/:([^\/]+)/g,function(a,b){delete k[b];return h[b]})}(l=C(k))&&
+(b+="?"+l);(n=C(n))&&(b+="#"+n);m?(f&&f.replace?a.history.replaceState(null,null,r+b):a.history.pushState(null,null,r+b),a.onpopstate()):a.location.href=r+b}var m="function"===typeof a.history.pushState,p="function"===typeof setImmediate?setImmediate:setTimeout,r="#!",t;return{setPrefix:function(a){r=a},getPath:l,setPath:h,defineRoutes:function(b,h,f){function p(){var a=l(),k={},m=d(a,k,k),p;for(p in b){var u=new RegExp("^"+p.replace(/:[^\/]+?\.{3}/g,"(.*?)").replace(/:[^\/]+/g,"([^\\/]+)")+"/?$");
+if(u.test(m)){m.replace(u,function(){for(var d=p.match(/:[^\/]+/g)||[],f=[].slice.call(arguments,1,-2),l=0;l<d.length;l++)k[d[l].replace(/:|\./g,"")]=decodeURIComponent(f[l]);h(b[p],k,a,p)});return}}f(a,k)}m?a.onpopstate=k(p):"#"===r.charAt(0)&&(a.onhashchange=p);p();return p},link:function(a){a.dom.setAttribute("href",r+a.attrs.href);a.dom.onclick=function(a){a.ctrlKey||a.metaKey||a.shiftKey||2===a.which||(a.preventDefault(),a.redraw=!1,a=this.getAttribute("href"),0===a.indexOf(r)&&(a=a.slice(r.length)),
+h(a,void 0,void 0))}}}};t.route=function(a,b){function k(a){return a}var d=R(a),l,h,t,p,r,z={view:function(){return[t(m(h,null,p,void 0,void 0,void 0))]}},q=function(a,f,m){h="div";t=k;p=null;b(a,z);d.defineRoutes(m,function(b,d,f){var m="function"!==typeof b.view,n=k,q=l=function(k){q===l&&(l=null,h=null!=k?k:m?"div":b,t=n,p=d,r=f,a.redraw(!0))},u=function(){q()};m&&("function"===typeof b.render&&(n=b.render.bind(b)),"function"===typeof b.onmatch&&(u=b.onmatch));u.call(b,q,d,f)},function(){d.setPath(f,
+null,{replace:!0})})};q.link=d.link;q.prefix=d.setPrefix;q.set=d.setPath;q.get=function(){return r};return q}(window,t.mount);t.withAttr=function(a,b,k){return function(d){return b.call(k||this,a in d.currentTarget?d.currentTarget[a]:d.currentTarget.getAttribute(a))}};t.render=M.render;t.redraw=I.publish;t.request=H.request;t.jsonp=H.jsonp;t.parseQueryString=J;t.buildQueryString=C;t.version="1.0.0-rc.5";"undefined"!==typeof module?module.exports=t:window.m=t};
\ No newline at end of file
diff --git a/render/render.js b/render/render.js
index 27c0a9d0..bc8acc4e 100644
--- a/render/render.js
+++ b/render/render.js
@@ -141,7 +141,9 @@ module.exports = function($window) {
 				while (oldEnd >= oldStart && end >= start) {
 					var o = old[oldStart], v = vnodes[start]
 					if (o === v && !recycling) oldStart++, start++
-					else if (o != null && v != null && o.key === v.key) {
+					else if (o == null) oldStart++
+					else if (v == null) start++
+					else if (o.key === v.key) {
 						oldStart++, start++
 						updateNode(parent, o, v, hooks, getNextSibling(old, oldStart, nextSibling), recycling, ns)
 						if (recycling && o.tag === v.tag) insertNode(parent, toFragment(o), nextSibling)
@@ -149,7 +151,9 @@ module.exports = function($window) {
 					else {
 						var o = old[oldEnd]
 						if (o === v && !recycling) oldEnd--, start++
-						else if (o != null && v != null && o.key === v.key) {
+						else if (o == null) oldEnd--
+						else if (v == null) start++
+						else if (o.key === v.key) {
 							updateNode(parent, o, v, hooks, getNextSibling(old, oldEnd + 1, nextSibling), recycling, ns)
 							if (recycling || start < end) insertNode(parent, toFragment(o), getNextSibling(old, oldStart, nextSibling))
 							oldEnd--, start++
@@ -160,7 +164,9 @@ module.exports = function($window) {
 				while (oldEnd >= oldStart && end >= start) {
 					var o = old[oldEnd], v = vnodes[end]
 					if (o === v && !recycling) oldEnd--, end--
-					else if (o != null && v != null && o.key === v.key) {
+					else if (o == null) oldEnd--
+					else if (v == null) end--
+					else if (o.key === v.key) {
 						updateNode(parent, o, v, hooks, getNextSibling(old, oldEnd + 1, nextSibling), recycling, ns)
 						if (recycling && o.tag === v.tag) insertNode(parent, toFragment(o), nextSibling)
 						if (o.dom != null) nextSibling = o.dom
diff --git a/render/tests/test-updateNodes.js b/render/tests/test-updateNodes.js
index b8468bc8..e56a828c 100644
--- a/render/tests/test-updateNodes.js
+++ b/render/tests/test-updateNodes.js
@@ -715,6 +715,22 @@ o.spec("updateNodes", function() {
 		o(updated[2].dom.nodeName).equals("A")
 		o(updated[2].dom).equals(root.childNodes[2])
 	})
+	o("change type, position and length", function() {
+		var vnodes = {tag: "div", children: [
+			undefined, 
+			{tag: "#", children: "a"}
+		]}
+		var updated = {tag: "div", children: [
+			{tag: "[", children: [{tag: "#", children: "b"}]},
+			undefined,
+			undefined
+		]}
+
+		render(root, vnodes)
+		render(root, updated)
+		
+		o(root.firstChild.childNodes.length).equals(1)
+	})
 	o("removes then recreates then reverses children", function() {
 		var vnodes = [{tag: "a", key: 1, children: [{tag: "i", key: 3}, {tag: "s", key: 4}]}, {tag: "b", key: 2}]
 		var temp1 = []