diff -r 000000000000 -r 6474c204b198 layout/reftests/tab-size/tab-size-4-spanoffset.html
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/reftests/tab-size/tab-size-4-spanoffset.html	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+<pre>123456<span style="-moz-tab-size: 4">B&#9;Z</span>
+1234567<span style="-moz-tab-size: 4">B&#9;Z</span>
+12345678<span style="-moz-tab-size: 4">B&#9;Z</span>
+123456789<span style="-moz-tab-size: 4">B&#9;Z</span>
+1234567890<span style="-moz-tab-size: 4">B&#9;Z</span>
+12345678901<span style="-moz-tab-size: 4">B&#9;Z</span></pre>