in reply to Re^2: getting rid of UTF-8
in thread getting rid of UTF-8
Good to know.
I don't think it was used as a word joiner. I think the presence of U+FEFF is explained by the concatenation of a BOM-prefixed string to another (the very kind of error that lead to U+2060 WORD JOINER being the new ZWNBSP).
In Section Seekers of Perl Wisdom