[Haskell-cafe] Re: Proving my point

[Philippa Cowderoy]

On Fri, 16 May 2008, Philippa Cowderoy wrote:

> Confusing, isn't it? It's almost the right message, too. I'm pretty sure 
> the misbehaviour's because eof doesn't consume - see what happens if you 
> put an error message on all of whiteSpace?
> 

It is indeed, and because the error merging code can't tell eof's "don't 
consume" from the "don't consume" try returns when its parm fails - nor 
is there any equivalent distinction in the error values. Which is to say: 
it's broken, but at least I know how to fix it in the library.

-- 
flippa at flippac.org

"The reason for this is simple yet profound. Equations of the form
x = x are completely useless. All interesting equations are of the
form x = y." -- John C. Baez