Re: Interesting but ugly
the identifiers FOO_BAR and fooBar are equivalent...
Sounds like PL/M, which is also case-insensitive, and where you can insert extra $-characters anywhere in identifiers and numeric literals without affecting meaning (FOO$BAR == fooBar). I have never understood why. $ is not a terribly good noise character for making identifiers more readable, because it looks so much like a letter.