- char-set:title-caseconstant
In Unicode, a character is titlecase if it has the category Lt in the character attribute database. There are very few of these characters; here is the entire 31-character list as of Unicode 3.0:
01C5 LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON 01C8 LATIN CAPITAL LETTER L WITH SMALL LETTER J 01CB LATIN CAPITAL LETTER N WITH SMALL LETTER J 01F2 LATIN CAPITAL LETTER D WITH SMALL LETTER Z 1F88 GREEK CAPITAL LETTER ALPHA WITH PSILI AND PROSGEGRAMMENI 1F89 GREEK CAPITAL LETTER ALPHA WITH DASIA AND PROSGEGRAMMENI 1F8A GREEK CAPITAL LETTER ALPHA WITH PSILI AND VARIA AND PROSGEGRAMMENI 1F8B GREEK CAPITAL LETTER ALPHA WITH DASIA AND VARIA AND PROSGEGRAMMENI 1F8C GREEK CAPITAL LETTER ALPHA WITH PSILI AND OXIA AND PROSGEGRAMMENI 1F8D GREEK CAPITAL LETTER ALPHA WITH DASIA AND OXIA AND PROSGEGRAMMENI 1F8E GREEK CAPITAL LETTER ALPHA WITH PSILI AND PERISPOMENI AND PROSGEGRAMMENI 1F8F GREEK CAPITAL LETTER ALPHA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI 1F98 GREEK CAPITAL LETTER ETA WITH PSILI AND PROSGEGRAMMENI 1F99 GREEK CAPITAL LETTER ETA WITH DASIA AND PROSGEGRAMMENI 1F9A GREEK CAPITAL LETTER ETA WITH PSILI AND VARIA AND PROSGEGRAMMENI 1F9B GREEK CAPITAL LETTER ETA WITH DASIA AND VARIA AND PROSGEGRAMMENI 1F9C GREEK CAPITAL LETTER ETA WITH PSILI AND OXIA AND PROSGEGRAMMENI 1F9D GREEK CAPITAL LETTER ETA WITH DASIA AND OXIA AND PROSGEGRAMMENI 1F9E GREEK CAPITAL LETTER ETA WITH PSILI AND PERISPOMENI AND PROSGEGRAMMENI 1F9F GREEK CAPITAL LETTER ETA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI 1FA8 GREEK CAPITAL LETTER OMEGA WITH PSILI AND PROSGEGRAMMENI 1FA9 GREEK CAPITAL LETTER OMEGA WITH DASIA AND PROSGEGRAMMENI 1FAA GREEK CAPITAL LETTER OMEGA WITH PSILI AND VARIA AND PROSGEGRAMMENI 1FAB GREEK CAPITAL LETTER OMEGA WITH DASIA AND VARIA AND PROSGEGRAMMENI 1FAC GREEK CAPITAL LETTER OMEGA WITH PSILI AND OXIA AND PROSGEGRAMMENI 1FAD GREEK CAPITAL LETTER OMEGA WITH DASIA AND OXIA AND PROSGEGRAMMENI 1FAE GREEK CAPITAL LETTER OMEGA WITH PSILI AND PERISPOMENI AND PROSGEGRAMMENI 1FAF GREEK CAPITAL LETTER OMEGA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI 1FBC GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI 1FCC GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI 1FFC GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI There are no ASCII or Latin-1 titlecase characters.