Re: [Hugs-users] Pattern match failure leads to lots of output

Hi

It would probably be better to hide the dictionary arguments and the _vNNN suffixes altogether in pattern match errors. Can you put a boiled-down example in the BTS?

Here is a small failing example, with context and stuff its hard to know when I get it minimal:

data Maybe1 a = Just1 a | Nothing1 deriving Eq data Maybe2 a = Just2 (Maybe1 a) | Nothing2 deriving Eq crash_me = g (Just2 (Just1 1)) g x = f Nothing2 where f y | x == y && False = undefined

Run crash_me to see a lot of output. Ross: I can't test the code you sent me right now, since I'm on a machine without a C compiler, but should be back by Wednesday. Thanks Neil