Thank you for your response! Indeed utf8-string works fine for printing and reading utf8 strings! I would also like to use multibyte characters in GHCi, but as the guys at #Haskell told me yesterday, GHCi 6.10.1 switched from using readline for line edting to the editline lib, and the latter can't handle unicode characters, at least for now. But in GHCi 6.8 and the older versions there shouldn't be any problem with unicode characters in GHCi. Thanks very much again! Christos On Wed, Nov 12, 2008 at 9:11 AM, Ahn, Ki Yung wrote:

Christos Chryssochoidis wrote:

...

Hello,

I'd like to type in GHCi some non-latin characters, but when I try it, no characters are inserted at all. Latin characters though are typed in fine, and in any other shell except GHCi I try non-Latin characters get typed without problem.

You should use the utf8-string library to print multibyte string literals in GHC.

http://hackage.haskell.org/cgi-bin/hackage-scripts/package/utf8-string

Linux distributions usually have this packaged. Otherwise, you can to install this using cabal.

I am not sure whether there is a direct support for wide characters in Haskell.

...

I mean I'm not able to type in GHCi an expression like

'ᾶ' == 'ᾶ' (can't type in the ᾶ)

Is this a known GHCi restriction on the character set it accepts, or something is wrong with my setup of GHCi/terminal?

I'm using GHC 6.10.1 in Mac OS X Terminal.

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On Thu, Nov 13, 2008 at 12:20:32PM +0900, Benjamin L.Russell wrote:

On Wed, 12 Nov 2008 13:35:12 +0200, "Christos Chryssochoidis" wrote:

...

Thank you for your response! Indeed utf8-string works fine for printing and reading utf8 strings! I would also like to use multibyte characters in GHCi, but as the guys at #Haskell told me yesterday, GHCi 6.10.1 switched from using readline for line edting to the editline lib, and the latter can't handle unicode characters, at least for now. But in GHCi 6.8 and the older versions there shouldn't be any problem with unicode characters in GHCi.

Incidentally, does anyone know the reason that GHCi 6.10.1 switched from using readline to editline?

I think it's because readline uses a GPL license, which technically means that it can't be bundled with GHC since GHC isn't GPL. Why this was suddenly deemed important I'm not sure. -Brent