in reply to Regex to delete high-bit characters

even easier:

tr/\x80-\xff/\x00-\x7f/;

s$$([},&%#}/&/]+}%&{})*;#$&&s&&$^X.($'^"%]=\&(|?*{%
+.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e