[GHC] #11012: Support for unicode primes on identifiers.

[GHC]

#11012: Support for unicode primes on identifiers.
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        Reporter:  ghartshaw         |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  low               |            Milestone:
       Component:  Compiler          |              Version:  7.10.2
  (Parser)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by nomeata):

 Hi ghartshaw,

 I’m very sympathetic towards making good use of Unicode. On the other
 hand, it is also important to follow the language specification, and that
 is pretty clear about what Unicode symbols are allowed as part of
 identifiers, etc.

 Currently, these primes are “Other Punctuation” according to the Unicode
 standard, any maybe someone uses them as such, e.g. as an operator.

 Would you mind precisely stating what modification you’d like to make to
 https://www.haskell.org/report/mono/2010#x7-160002.2

 This is a bit related to #10196, where we deviated from the report to
 allow subscripted symbols, so there is precedent.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11012#comment:1>
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