Sorry to reply to self, but as many others have pointed out, one may not want to type a large subset of code in unicode, but real example from tcllib aycock par

Sorry to reply to self, but as many others have pointed out, one may not want to type a large subset of code in unicode, but real example from tcllib aycock parser where this ability is nice is for mathematic symbols: lset newrhs $position ${sym}\{Ø} which lets one's code read like the printed algorithms in a book.