I have a legacy Linux installation that still uses ISO-8859-1 charset. Commit 9072e98 causes irssi to erroneously echo utf8 chars to the input line (start irssi, press 'ä' key, irssi outputs 'ä' on the input line, cursor is placed between the two chars) instead of ISO-8859-1. Everything else seems to work fine, with no encoding problems when sending/receiving text from/to IRC channels. Only input line is affected.