[reply just sent to hugs-bugs]

Maybe if this one is going to be fixed, toUpper could be put in the correct library as well?

I'm assuming this is a reference to the fact that toUpper is exported both from Char (correct) and from Prelude (incorrect)? A quick check of Prelude.hs and hugs98/src/*.c reveals no good reason why this code is in the Prelude. Perhaps some vague code tidiness argument about keeping related code together? So, it could be fixed quite easily but there's a bunch of similar deviations from the standard which are not easily fixed because the Prelude (or some part of the Hugs compiler) depends on the function which, with the current Hugs implementation, implies that there has to be a copy in the Prelude. We don't want to make 2 copies of the same code though (one in the Prelude but not exported, one in the correct place and exported) because it leads to code maintenance problems. Suppose that toUpper had a bug in it - it'd be so easy to fix one copy and forget about the existence of the second. Another fix (the preferred fix) is to improve the Hugs compiler so that the code can have (almost) the same structure as in the report. We know how to do this (STG-Hugs had it) but it'll take a bit of time to figure out again exactly which changes are required because the special treatment of the Prelude is deeply wired into Hugs. (More precisely, it'll take me a bit of time to find the time to look through the relevant archives.) -- Alastair Reid reid@cs.utah.edu http://www.cs.utah.edu/~reid/