pattern match failure on Chars with Unicode codepoint >0x4ff

[guest]

hi,

i tested the following code in Hugs:

patternMatchingWorks1 = case '\x4ff' of '\x4ff' -> True
patternMatchingWorks2 = case '\x500' of '\x500' -> True
patternMatchingWorks3 = f '\x4ff' where f '\x4ff' = True
patternMatchingWorks4 = f '\x500' where f '\x500' = True
patternMatchingWorks5 = (\'\x4ff'->True) '\x4ff'
patternMatchingWorks6 = (\'\x500'->True) '\x500'

and got the following output:

Main> :load "M:\\haskell\\sources\\WinHugsPatternMatchingBug.hs"
Main> patternMatchingWorks1
True
Main> patternMatchingWorks2

Program error: pattern match failure: patternMatchingWorks2_v1621 '\1280'

Main> patternMatchingWorks3
True
Main> patternMatchingWorks4

Program error: pattern match failure: patternMatchingWorks4_v1623 '\1280'

Main> patternMatchingWorks5
True
Main> patternMatchingWorks6

Program error: pattern match failure: patternMatchingWorks6_v1627 '\1280'

i tested it with hugs.exe and winhugs.exe (September 2006 version, i.e. the most recent according to the download page) on Windows XP Professional, both give the same result, while ghc gives the correct result.
Pattern matching seems to fail for all Chars with codepoint >0x4ff. i understand that Hugs doesn't fully support Unicode, but is this intended behaviour? If so, please mention it on the "Hugs Bugs & Features" page.

[guest]

oh, i forgot to mention my e-mail address: pge03ipg@…
if there are any questions, write me a note. sorry for spamming.