Cache the childrens of editable elements

mithril.js

@@ -533,6 +533,7 @@
 			} else if (editable) {
 				// contenteditable nodes use `innerHTML` instead of `nodeValue`.
 				editable.innerHTML = data
+				nodes = [].slice.call(editable.childNodes)
 			} else {
 				// was a trusted string
 				if (nodes[0].nodeType === 1 || nodes.length > 1 ||

test/mithril.render.js

@@ -1577,5 +1577,18 @@ describe("m.render()", function () {
 			// This works only if select value is set after its options exist.
 			expect(root.childNodes[0].value).to.equal("b")
 		})
+
+		it("caches children of editable on update", function () {
+			var root = document.createElement("span")
+			var t1 = m.trust("<h1>fo</h1>o")
+			var t2 = "foo"
+
+			m.render(root, m("span", {contenteditable: false}, t1))
+			m.render(root, m("span", {contenteditable: true}, t2))
+			m.render(root, m("span", {contenteditable: false}, t1))
+
+			expect(root.childNodes[0].innerHTML).to.equal(t1.valueOf())
+
+		})
 	})
 })