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single-constraint-parens breaks AST equality in case of QuantifiedConstraints #340

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paolino opened this issue Jun 29, 2023 · 0 comments · Fixed by #342
Closed
1 of 2 tasks

single-constraint-parens breaks AST equality in case of QuantifiedConstraints #340

paolino opened this issue Jun 29, 2023 · 0 comments · Fixed by #342
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@paolino
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paolino commented Jun 29, 2023 •
edited

  • No, I've not verified that Ormolu does not have this bug, it shouldn't as Ormoulu doesn't remove parens.
  • I've verified that https://fourmolu.github.io can reproduce this bug

Formatting this code remove parenthesis when single-constraint-parens: never is set report an AST incoherence.

instance (forall a. Show a => Show (f a)) => Show (C f a)
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Fix single-constraint-parens: never with QuantifiedConstraints fourmolu/fourmolu
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@paolino