Hello, First of all, thank you for those who replied kindly.
> > > > When the -XUnicodeSyntax option is specified, GHC accepts some Unicode > > > > characters including left/right arrows. Unfortunately, the letter > > > > "greek lambda" cannot be used. Are there any technical reasons to not > > > > accept it? > > > > > > The "greek lambda" is a normal lower-case alphabetic character - it can > > > be used in identifier names. OK. I understand. > > But it could be a reserved word synonymous with \. After all, \ can > > occur in operator symbols, but the operator \ is reserved. > > Presumably that would let you do (\ x -> ...) but not (\x -> ) since the > "\x" would run together and lexically it would be one identifier. If we reserve the greek lambda as special like '\', the lexer can separate <lambda>x into two tokens: <lambda> and 'x', I guess. Some people may want to use the greek lambda in identifiers. And some would want to use the greek lambda as an alternative of '\'. So, how about providing a new option to make the greek lambda special? P.S. I want to type the examples in "Programming in Haskell" as is. --Kazu _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
