that's interesting, perhaps you could try the following small tests:

Code:
//var %a = $chr(55384), %b = $chr(56320) | echo -a $width(%a $+ %b, FixedSys, 9)


Code:
//var %a = $chr(55384), %b = $chr(56320) | echo -a $len($utfencode(%a $+ %b))


Code:
//var %a = $chr(240) $+ $chr(166) $+ $chr(128) $+ $chr(128) | echo -a $utfdecode(%a) -- $width($utfdecode(%a), FixedSys, 9)


and see how the Local Font List on http://www.fileformat.info/info/unicode/char/26000/fontsupport.htm appears on your machine

"The only excuse for making a useless script is that one admires it intensely" - Oscar Wilde