| Subject line says it all, just about: | | in hugs/winhugs98 (haskell98 mode), challenge the interpreter with the | following 8 characters (not including blanks): | | Prelude> :s -u | Prelude> (<) 2 | | and the result is not pretty...nor very useful. It has to be interrupted | manually. | ... | Am I right or? And is there a prize for the shortest bug ? This isn't a bug. When you use -u, you're asking Hugs to show you its internal structures as best as it can, without trying to make use of any show functions. In this case, your partial application involves a dictionary for Ord (i.e., a collection of functions that implement the operations of the Ord class), and that structure is infinite (in fact it's cyclic, a consequence of the reliance on default definitions for members of Ord that aren't spelled out explicitly). And of course it takes rather a lot of time and characters to print out an infinite structure ... My advice, if you don't want to look under the hood, don't use :set -u All the best, Mark