Haskell 1.3 DRAFT vs. Glasgow Haskell 0.26

There is work afoot on "Haskell 1.3," a substantial revision of the Haskell 1.2 language.

Haskell 1.3 is NOT a standard; it is NOT even a DRAFT standard. As of June 1995, there exists a 1.3 PROPOSAL, which will CERTAINLY change. Therefore, the "1.3 things" we "support" may change ARBITRARILY much, and we won't even be mildly apologetic about breaking programs that use "1.3" facilities.

That said, there are two categories of "1.3" things that we commend to you.

• Things virtually certain to end up in any 1.3 standard. An example is the `Maybe' type.
• Wobblier things which are so much better than their 1.2 equivalents that you will want to use them. We mean: monadic I/O. The basic I/O functions are "unlikely" to change and so are reasonably safe to adopt. (But see WARNING above...)

To use our 1.3 code, you should compile and link using a `-fhaskell-1.3' flag.