ANNOUNCE: GHC 6.10.1 RC 1

[Jules Bean]

Simon Marlow wrote:
> Judah Jacobson wrote:
> 
>> Once small thing I've noticed: UserInterrupt (ctr-c) exceptions are
>> not thrown in ghci, probably because it installs its own signal
>> handlers:
>>
>> Prelude Control.Exception Control.Concurrent> handle (\UserInterrupt
>> -> putStrLn "Caught!") (threadDelay 2000000)
>> ^CInterrupted.
>>
>> For consistency between the compiled and interpreted environments, it
>> would be nice if the above could catch the ctrl-c.  But maybe there's
>> a reason not to do this?  If this change sounds OK, I can take a look
>> at this and try to put together a patch over the weekend.
> 
> Hmm, tricky one.  I agree with the argument for consistency, but on the 
> other hand you might also want a way to interrupt a computation 
> regardless, and that almost works - as long as the program isn't 
> discarding exceptions it knows nothing about.

In my mind this is, at least thematically, related to

http://hackage.haskell.org/trac/ghc/ticket/1399

that is, it relates to the various ways that running in ghci is 
different from running independently.

To get a really good answer I think we need a couple of RTS 
enhancements, the ability to have a kind 'supervisor' mode etc...

Jules