=head1 BUGS
+Unicode standard named sequences are not recognized, such as
+C<LATIN CAPITAL LETTER A WITH MACRON AND GRAVE>
+(which should mean C<LATIN CAPITAL LETTER A WITH MACRON> with an additional
+C<COMBINING GRAVE ACCENT>).
+
Since evaluation of the translation function happens in a middle of
compilation (of a string literal), the translation function should not
do any C<eval>s or C<require>s. This restriction should be lifted in