[GHC] #1100: Parse error on (#) in .lhs files

[GHC]

#1100: Parse error on (#) in .lhs files
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 Reporter:  j.russell at alum.mit.edu  |          Owner:         
     Type:  bug                     |         Status:  new    
 Priority:  low                     |      Milestone:         
Component:  Compiler (Parser)       |        Version:  6.6    
 Severity:  normal                  |     Resolution:         
 Keywords:                          |     Difficulty:  Unknown
 Testcase:                          |   Architecture:  Unknown
       Os:  Unknown                 |  
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Changes (by simonpj):

  * priority:  normal => low

Comment:

 I think it works fine unless you have -fglasgow-exts.  If you use
 -fglasgow-exts, GHC uses (# and #) parens for unboxed tuples. This does
 indeed mean you can't give a type sig to (#), which is sub-optimal, since
 it clearly isn't an unboxed tuple.

 I guess this would mean fixing the lexer to recognise (#) in addition to
 (# and #).

 Simon

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1100>
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