From: simonpj@microsoft.com <unknown>
Date: Thu, 23 Jul 2009 06:38:59 +0000 (+0000)
Subject: Add tuple sections as a new feature
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=58521c72cec262496dabf5fffb057d25ab17a0f7;hp=58521c72cec262496dabf5fffb057d25ab17a0f7;p=ghc-hetmet.git

Add tuple sections as a new feature

This patch adds tuple sections, so that

	(x,,z)  means   \y -> (x,y,z)

Thanks for Max Bolinbroke for doing the hard work.

In the end, instead of using two constructors in HsSyn, I used
just one (still called ExplicitTuple) whose arguments can be
	Present (LHsExpr id)
or	Missing PostTcType

While I was at it, I did a bit of refactoring too.
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