From b97b74396876577d3edeb8486a9aebeb234f85ac Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Wed, 14 Oct 2015 19:59:21 +0100
Subject: Fix recursive collapsing elements

---
 lib/html/simplify.js | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

(limited to 'lib/html')

diff --git a/lib/html/simplify.js b/lib/html/simplify.js
index 8ab4a1f..5b65034 100644
--- a/lib/html/simplify.js
+++ b/lib/html/simplify.js
@@ -28,19 +28,23 @@ function simplifyNodes(nodes) {
     var children = [];
     
     nodes.map(simplify).forEach(function(child) {
-        var lastChild = children[children.length - 1];
-        if (child.type === "element" && !child.tag.fresh && lastChild && lastChild.type === "element" && child.tag.matchesElement(lastChild.tag)) {
-            child.children.forEach(function(grandChild) {
-                // Mutation is fine since simplifying elements create a copy of the children.
-                lastChild.appendChild(grandChild);
-            });
-        } else {
-            children.push(child);
-        }
+        appendChild(children, child, children.push.bind(children));
     });
     return children;
 }
 
+function appendChild(children, child, append) {
+    var lastChild = children[children.length - 1];
+    if (child.type === "element" && !child.tag.fresh && lastChild && lastChild.type === "element" && child.tag.matchesElement(lastChild.tag)) {
+        child.children.forEach(function(grandChild) {
+            // Mutation is fine since simplifying elements create a copy of the children.
+            appendChild(lastChild.children, grandChild, lastChild.appendChild.bind(lastChild));
+        });
+    } else {
+        append(child);
+    }
+}
+
 function removeEmpty(node) {
     return emptiers[node.type](node);
 }
-- 
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