Re: [Haskell-cafe] Unicode symbols in operators

16 Oct 2014

      Hi,

On 15 October 2014 21:23, Niklas Hambüchen  wrote:
...
(I'm trying to improve Sublime Text's Haskell lexer.)
https://www.haskell.org/onlinereport/haskell2010/haskellch10.html says
  uniSymbol     →       any Unicode symbol or punctuation
What is meant here, is "Unicode symbol" literally \p{Symbol} in regex,
or more?
So uniSymbol = \p{Symbol} | \p{Punctuation}
Looking at the source of GHC's lexer [1], the relevant part seems to be:

                case generalCategory c of
                  [...]
                  ConnectorPunctuation  -> symbol
                  DashPunctuation       -> symbol
                  [...]
                  OtherPunctuation      -> symbol
                  MathSymbol            -> symbol
                  CurrencySymbol        -> symbol
                  ModifierSymbol        -> symbol
                  OtherSymbol           -> symbol
                  [...]

[1] https://github.com/ghc/ghc/blob/master/compiler/parser/Lexer.x

Re: [Haskell-cafe] Unicode symbols in operators

Mikhail Glushenkov