[GHC] #1113: GHCi 6.6 and unicode at the REPL

[GHC]

#1113: GHCi  6.6 and unicode at the REPL
------------------------------------------+---------------------------------
    Reporter:  greg at sleepingsquirrel.org  |       Owner:       
        Type:  bug                        |      Status:  new  
    Priority:  normal                     |   Milestone:       
   Component:  GHCi                       |     Version:  6.6  
    Severity:  normal                     |    Keywords:       
  Difficulty:  Unknown                    |    Testcase:       
Architecture:  x86                        |          Os:  Linux
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While the following definition works fine in a source file (that's a
 Unicode [http://www.fileformat.info/info/unicode/char/00b1/index.htm
 U+00B1 PLUS-MINUS SIGN])...

 {{{
 a ± b = (a+b, a-b)
 }}}

 ...I get an error when trying entering it at the REPL prompt...

 {{{
 Prelude> let a ± b = (a+b, a-b)
 <interactive>:1:4: Parse error in pattern
 Prelude>
 }}}

 ...and using ":t" to display results with something other than ASCII type
 variables doesn't seem to work quite right.  Here's an example program...

 {{{
 map' :: (α -> β) -> [α] -> [β]
 map' _ [] = []
 map' f (x:xs) = (f x) : map f xs
 }}}

 ...and here's what the results looks like on my terminal...

 http://sleepingsquirrel.org/haskell/ghci_unicode.jpg

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1113>
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