From 1e829f16572c76a036c37f7318dd9bb0212517cd Mon Sep 17 00:00:00 2001
From: Leo Horie <lhorie@klick.com>
Date: Fri, 11 Jul 2014 22:36:58 -0400
Subject: [PATCH] normalize arrays

---
 mithril.js             | 14 +++++++++++++-
 tests/mithril-tests.js | 11 +++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/mithril.js b/mithril.js
index 6053e545..9a8be835 100644
--- a/mithril.js
+++ b/mithril.js
@@ -20,7 +20,19 @@ Mithril = m = new function app(window) {
 		}
 		if (classes.length > 0) cell.attrs[classAttrName] = classes.join(" ")
 		
-		cell.children = hasAttrs ? args[2] : args[1]
+		var children = hasAttrs ? args[2] : args[1]
+		if (children instanceof Array) {
+			cell.children = []
+			for (var i = 0; i < children.length; i++) {
+				var child = children[i]
+				if (child instanceof Array) children.push.apply(cell.children, child)
+				else cell.children.push(child)
+			}
+		}
+		else {
+			cell.children = children
+		}
+		
 		for (var attrName in attrs) {
 			if (attrName == classAttrName) cell.attrs[attrName] = (cell.attrs[attrName] || "") + " " + attrs[attrName]
 			else cell.attrs[attrName] = attrs[attrName]
diff --git a/tests/mithril-tests.js b/tests/mithril-tests.js
index 316b0c03..4f6bd6a6 100644
--- a/tests/mithril-tests.js
+++ b/tests/mithril-tests.js
@@ -667,6 +667,17 @@ function testMithril(mock) {
 		m.render(root, [[], m("div")])
 		return root.childNodes.length == 1 && root.childNodes[0].nodeName == "DIV"
 	})
+	test(function() {
+		//https://github.com/lhorie/mithril.js/issues/156
+		var root = mock.document.createElement("div")
+		m.render(root, m("div", [
+			["a", "b", "c", "d"].map(function() {
+				return [m("div"), " "]
+			}),
+			m("span")
+		]))
+		return root.childNodes[0].childNodes[8].nodeName == "SPAN"
+	})
 	//end m.render
 
 	//m.redraw