Index: wp-includes/formatting.php
===================================================================
--- wp-includes/formatting.php	(revision 18656)
+++ wp-includes/formatting.php	(working copy)
@@ -532,6 +532,7 @@
 	if (seems_utf8($string)) {
 		$chars = array(
 		// Decompositions for Latin-1 Supplement
+		chr(194).chr(170) => 'a', chr(194).chr(186) => 'o',
 		chr(195).chr(128) => 'A', chr(195).chr(129) => 'A',
 		chr(195).chr(130) => 'A', chr(195).chr(131) => 'A',
 		chr(195).chr(132) => 'A', chr(195).chr(133) => 'A',
@@ -543,26 +544,26 @@
 		chr(195).chr(144) => 'D', chr(195).chr(145) => 'N',
 		chr(195).chr(146) => 'O', chr(195).chr(147) => 'O',
 		chr(195).chr(148) => 'O', chr(195).chr(149) => 'O',
-		chr(195).chr(150) => 'O', chr(195).chr(153) => 'U',
-		chr(195).chr(154) => 'U', chr(195).chr(155) => 'U',
-		chr(195).chr(156) => 'U', chr(195).chr(157) => 'Y',
-		chr(195).chr(158) => 'TH',chr(195).chr(159) => 's',
-		chr(195).chr(160) => 'a', chr(195).chr(161) => 'a',
-		chr(195).chr(162) => 'a', chr(195).chr(163) => 'a',
-		chr(195).chr(164) => 'a', chr(195).chr(165) => 'a',
-		chr(195).chr(166) => 'ae',chr(195).chr(167) => 'c',
-		chr(195).chr(168) => 'e', chr(195).chr(169) => 'e',
-		chr(195).chr(170) => 'e', chr(195).chr(171) => 'e',
-		chr(195).chr(172) => 'i', chr(195).chr(173) => 'i',
-		chr(195).chr(174) => 'i', chr(195).chr(175) => 'i',
-		chr(195).chr(176) => 'd', chr(195).chr(177) => 'n',
-		chr(195).chr(178) => 'o', chr(195).chr(179) => 'o',
-		chr(195).chr(180) => 'o', chr(195).chr(181) => 'o',
-		chr(195).chr(182) => 'o', chr(195).chr(184) => 'o',
-		chr(195).chr(185) => 'u', chr(195).chr(186) => 'u',
-		chr(195).chr(187) => 'u', chr(195).chr(188) => 'u',
-		chr(195).chr(189) => 'y', chr(195).chr(190) => 'th',
-		chr(195).chr(191) => 'y',
+		chr(195).chr(150) => 'O', chr(195).chr(152) => 'O',
+		chr(195).chr(153) => 'U', chr(195).chr(154) => 'U',
+		chr(195).chr(155) => 'U', chr(195).chr(156) => 'U',
+		chr(195).chr(157) => 'Y', chr(195).chr(158) => 'TH',
+		chr(195).chr(159) => 's', chr(195).chr(160) => 'a',
+		chr(195).chr(161) => 'a', chr(195).chr(162) => 'a',
+		chr(195).chr(163) => 'a', chr(195).chr(164) => 'a',
+		chr(195).chr(165) => 'a', chr(195).chr(166) => 'ae',
+		chr(195).chr(167) => 'c', chr(195).chr(168) => 'e',
+		chr(195).chr(169) => 'e', chr(195).chr(170) => 'e',
+		chr(195).chr(171) => 'e', chr(195).chr(172) => 'i',
+		chr(195).chr(173) => 'i', chr(195).chr(174) => 'i',
+		chr(195).chr(175) => 'i', chr(195).chr(176) => 'd',
+		chr(195).chr(177) => 'n', chr(195).chr(178) => 'o',
+		chr(195).chr(179) => 'o', chr(195).chr(180) => 'o',
+		chr(195).chr(181) => 'o', chr(195).chr(182) => 'o',
+		chr(195).chr(184) => 'o', chr(195).chr(185) => 'u',
+		chr(195).chr(186) => 'u', chr(195).chr(187) => 'u',
+		chr(195).chr(188) => 'u', chr(195).chr(189) => 'y',
+		chr(195).chr(190) => 'th',chr(195).chr(191) => 'y',
 		// Decompositions for Latin Extended-A
 		chr(196).chr(128) => 'A', chr(196).chr(129) => 'a',
 		chr(196).chr(130) => 'A', chr(196).chr(131) => 'a',