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Simon Peyton Jones authored
This is a continuation of commit e9e61f18 Date: Thu May 26 15:24:53 2016 +0100 Reduce special-casing for nullary unboxed tuple which related to Trac #12115. But typecheck/should_run/tcrun051 revealed that my patch was incomplete. This fixes it, by removing another special case in Type.repType. I had also missed a case in UnariseStg.unariseIdBinder. I took the opportunity to add explanatory notes Note [Unarisation] Note [Unarisation and nullary tuples] in UnariseStg
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