[GHC] #10412: isAlphaNum includes mark characters, but neither isAlpha nor isNumber do

[GHC]

#10412: isAlphaNum includes mark characters, but neither isAlpha nor isNumber do
-------------------------------------+-------------------------------------
        Reporter:  Artyom.Kazak      |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  libraries/base    |                 Version:  7.10.1
      Resolution:                    |                Keywords:  unicode
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------

Comment (by hvr):

 For the record, this was already an issue on GHC 7.8.4 (through GHC
 7.0.4):

 {{{
 GHCi, version 7.0.4: http://www.haskell.org/ghc/  :? for help
 λ> import Data.Char
 λ> length $ filter isMark  $ filter (\c -> isAlphaNum c /= (isAlpha c &&
 isNumber c)) ['\0'..]
 1281
 }}}

 {{{
 GHCi, version 7.8.4: http://www.haskell.org/ghc/  :? for help
 λ> import Data.Char
 λ> length $ filter isMark  $ filter (\c -> isAlphaNum c /= (isAlpha c &&
 isNumber c)) ['\0'..]
 1498
 }}}

 {{{
 GHCi, version 7.10.1.20150511: http://www.haskell.org/ghc/  :? for help
 λ> import Data.Char
 λ> length $ filter isMark  $ filter (\c -> isAlphaNum c /= (isAlpha c &&
 isNumber c)) ['\0'..]
 1830
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10412#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler