Em-dashes were being read as en-dashes.

inc/functions.php

@@ -165,8 +165,8 @@
 			// En and em- dashes are rendered exactly the same in
 			// most monospace fonts (they look the same in code
 			// editors).
-			$body = str_replace('--', '–', $body); // en dash
 			$body = str_replace('---', '—', $body); // em dash
+			$body = str_replace('--', '–', $body); // en dash
 		}
 
 		$body = utf8tohtml($body, true);