[Haskell-cafe] Has character changed in GHC 6.8?
jules at jellybean.co.uk
Tue Jan 22 11:56:22 EST 2008
Magnus Therning wrote:
> Yes, of course, stupid me. But it is still the UTF-8 representation of
> "ö", not Latin-1, and this brings me back to my original question, is
> this an intentional change in 6.8?
> > map ord "ö"
> > map ord "åɓｚ𝐀"
> 6.8 produces Unicode code points rather then a particular encoding.
The key point here is this has nothing to do with GHC.
GHC's behaviour has not changed in this regard.
This is about GHCi! [And, to some extent, the behaviour of whatever
shell / terminal emulator you run ghci in]
Sounds like a pedantic difference, but it's not.
The difference here is what GHCi is feeding into your haskell code when
you type the sequence "ö" at a ghci prompt, rather than anything
different about the underlying behaviour of map, ord, length, show,
putStr. map, ord, length, show, putStr have not changed from 6.6 to 6.8.
I don't have 6.8 handy myself but from your demonstration is would
appear that 6.8's ghci correctly understands whatever input encoding is
being used in whatever terminal environment you are choosing to run ghci
Whereas, 6.6's ghci was using a single-byte terminal approach, and your
terminal environment was encoding ö as two characters.
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