#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