2 + 2 = 14

[Leon Smith]

Here's a amusing ghci session:

Main> putStr "1" >> error "Error" 
*** Exception: Error
Main> 2 + 2
14
Main> 


It appears as though the output needs to be flushed before an error
message from an unhandled exception is printed, so that the session
looks something like this:

Main> putStr "1" >> error "Error"
1
*** Exception: Error
Main> 2 + 2
4
Main> 


Maybe output should be flushed before the "Main>" prompt is printed,
like this:

Main> putStr "1" >> error "Error"
*** Exception: Error
1
Main> ...

I'm not sure which would be better, but hugs has the former behavior.

best,
leon