From cfe9bea8b31db8e80a24bcf16b251b775520201e Mon Sep 17 00:00:00 2001
From: Neil Jenkins <neil@nmjenkins.com>
Date: Fri, 9 Dec 2011 13:30:58 +1100
Subject: [PATCH] Opera collapses blocks with just spaces for data

---
 source/Node.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/source/Node.js b/source/Node.js
index 8d207a0..ae224e1 100644
--- a/source/Node.js
+++ b/source/Node.js
@@ -385,8 +385,16 @@ implement( Element, {
                     }
                     el = child;
                 }
-                if ( el.isLeaf() && el.nodeType !== TEXT_NODE ) {
-                    el.parentNode.insertBefore( doc.createTextNode( '' ), el );
+                if ( el.isLeaf() ) {
+                    if ( el.nodeType !== TEXT_NODE ) {
+                        el.parentNode.insertBefore(
+                            doc.createTextNode( '' ), el );
+                    }
+                    // Opera will collapse the block element if it contains
+                    // just spaces (but not if it contains no data at all).
+                    else if ( /^ +$/.test( el.data ) ) {
+                        el.data = '';
+                    }
                 }
             }
             else if ( !el.querySelector( 'BR' ) ) {