Here about apostles and apostates.

Actually, that apostrophe is an ordinary ASCII character ', which need (and should) not be escaped in Mudcat. Browsers are not obliged to support ' in ordinary HTML code.

There is another character called "typographic apostrophe": ’ (’ or ’ ["right single quote"!]) – read more at Wikipedia. The Unicode Consortium is often criticised for bungling the entire topic.

Je m’en fiche – I don’t care. Nice song.