#10583: Chaos in Lexeme.hs -------------------------------------+------------------------------------- Reporter: goldfire | Owner: goldfire Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: 10582 | Differential Revisions: -------------------------------------+------------------------------------- Comment (by goldfire): We use `isLexVarSym` to check if a symbol name is valid? That should be refactored, because quite clearly the other `isLexXXX` functions do not do validity checking. And I don't agree about the goofy conversion: I want to combine `isVarSymChar` and `okSymChar`, both of type `Char -> Bool`. As for `notFollowedBySymbol`: This needs to be spot on -- a mistake in either direction would lead to wrong behavior. One place it's used is to detect banana brackets for arrow notation; see #10582. In the end, I can figure out what these functions are used for by poking around, but I just don't quite know what their specification is -- as in, what (precisely) they should do. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10583#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler