patch applied (/haskell/ghc): Add 6.8.1 download page

[Claus Reinke]

>> I'm sure we'd get complaints if we did something wide ranging 
>> like switching off the printing of IO-results.

i was thinking of a switch, in the sense of an option/flag, similar
to print-bind-results.

>> So we just documented the obscure behaviour.  Let's see if 
>> it bites anyone.

consider mine the first complaint, then;-)
 
> I think that -fno-print-bind-result should be the default.  Several people 
> have asked for this, indeed I'm not sure why we didn't make it the default 
> when we added the option:
> 
> http://hackage.haskell.org/trac/ghc/ticket/887

see also http://hackage.haskell.org/trac/ghc/ticket/1721

as i said in the comment there, i don't see a point in default
printing of bindings, as i can always refer to the variables,
but i agree that having a flag to make that optional is okay
(just print all or nothing, without those special cases, please).

the same goes for non-bind actions, as their results are
implicitly bound to "it" (note that using the void trick to
avoid printing loses the result..). but i have seen cases 
where the lack of results was confusing. again, a flag to 
control result printing would probably serve both camps 
best (although i suspect that the confusing cases are better 
addressed by refering to the flag for printing result *types*,
which would also advertise the availability of "it").

always printing results, without giving the user the chance
to switch that off, loses control over evaluation. even if
i want to inspect the result directly before passing it on,
these days i might use :print instead of print.

claus