#2493: implement proposed Qualified Operator syntax
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Reporter: Isaac Dupree | Owner: simonmar
Type: feature request | Status: closed
Priority: normal | Milestone: 6.12 branch
Component: Compiler | Version: 6.8.3
Severity: normal | Resolution: fixed
Keywords: | Difficulty: Unknown
Testcase: | Architecture: Unknown
Os: Unknown |
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Changes (by simonmar):
* status: new => closed
* resolution: => fixed
Comment:
Done:
{{{
Mon Sep 22 16:23:40 BST 2008 Simon Marlow <[EMAIL PROTECTED]>
* add -XNewQualifiedOperators (Haskell' qualified operator syntax)
}}}
The implementatin is not exactly the same as the proposal, in that the
`(op)` and {{{`var`}}} syntax still resides in the parser, and so we still
accept `( + )` as an operator (but not `Prelude.( + )`, so there's an
inconsistency). I did try to move these parsing rules down to the lexer,
but it turned out to be too complicated to do this and also retain the old
way. I don't think it'll be a problem in practice. There are some notes
about the issues in `Lexer.x`.
This could possibly go into 6.10.1,
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2493#comment:3>
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