#10412: isAlphaNum includes mark characters, but neither isAlpha nor isNumber do -------------------------------------+------------------------------------- Reporter: Artyom.Kazak | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: libraries/base | Version: 7.10.1 Resolution: | Keywords: unicode, | newcomer Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Azel): From what I can see on various C and C++ documentations (i.e. [https://docs.microsoft.com/en-gb/cpp/c-runtime-library/reference/isalnum- iswalnum-isalnum-l-iswalnum-l Microsoft's], [https://www.gnu.org/software/libc/manual/html_node/Classification-of- Wide-Characters.html#Classification-of-Wide-Characters the glibc's] or [http://en.cppreference.com/w/cpp/string/wide/iswalnum cppreference.com's] which refers us [http://www.open-std.org/JTC1/SC35/WG5/docs/30112d10.pdf here]) `iswalnum`'s behaviour should be to return `True` if either of `iswalpha` or `iswdigit` does, so I guess `isAlphaNum` ought to do the same. That is, keeping the documentation as it is and fixing `u_iswalnum`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10412#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler