None of Haruo's examples in the first post showed up correctly on my screen.

Mudcat doesn't specify which character set it uses (ideally it should specify UTF-8 but the line that declares that has been commented out because in practice there's too much legacy text already posted in Latin-1 and declaring UTF-8 would break all of that)

Interestingly, Haruo's pieces of Korean and Japanese look correct (I can't read either language but the symbols look like they are probably right)

My browser is set for utf-8 by default.