Issue 4748
Provides aliases
auml, Auml, ouml,Ouml,uuml,Uuml
They were requested by a user
http://lists.gnu.org/archive/html/lilypond-user/2016-01/msg00577.html
("&AA;" . "Å")
("&ae;" . "æ")
("&AE;" . "Æ")
+ ("ä" . "ä")
+ ("Ä" . "Ä")
("&dh;" . "ð")
("&DH;" . "Ð")
("&dj;" . "đ")
("&O;" . "Ø")
("&oe;" . "œ")
("&OE;" . "Œ")
+ ("ö" . "ö")
+ ("Ö" . "Ö")
("&s;" . "ſ")
("&ss;" . "ß")
("&th;" . "þ")
("&TH;" . "Þ")
+ ("ü" . "ü")
+ ("Ü" . "Ü")
;; Mathematical symbols
("+" . "+")