[Haskell-cafe] Public floggings

[Anthony Clayden]

>  how I've found perversely delightful ways to use the C preprocessor.
Especially token-pasting.

Then boy! do I have an offer for you/you'll be like a pig in muck.

There's a Haskell compiler written in C++, using all the tricks you love:

* #define nested inside #if, so you're never quite sure which version of a
macro is in play.
* #defines that expand to a series of assignments and routine calls.
* Module-wide and global variables that get updated as side-effects of
routine calls
(as well as those routines passing back results)
* All data structures being cons pairs deeply nested, typically routines
poke into hd(hd(tl(e))) or some such.

Someone's generously put the source online
https://github.com/FranklinChen/hugs98-plus-Sep2006/tree/master/src

You can load it up into Visual Studio, and produce a genuine Windows
executable with a Haskell REPL. (Ah, silly me, of course you'd want the
familiar *nix command line -- that's even easier.)

And there's real work you could contribute to
https://mail.haskell.org/pipermail/hugs-bugs/2021-October/thread.html

Enjoy!
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