ff7a0db099
Implements a Lean 3 pretty printer feature. Structures with the
`@[pp_using_anonymous_constructor]` attribute pretty using anonymous
constructor notation (`⟨x, y, z⟩`) rather than structure instance
notation (`{a := x, b := y, c := z}`).
[Zulip
discussion](https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/.60pp_using_anonymous_constructor.60/near/425705445)
17 lines
321 B
Text
17 lines
321 B
Text
/-!
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# Tests for the `pp_using_anonymous_constructor` attribute
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-/
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/-!
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Custom structure
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-/
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structure S where
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(x y : Nat)
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/-- info: { x := 1, y := 2 } : S -/
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#guard_msgs in #check {x := 1, y := 2 : S}
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attribute [pp_using_anonymous_constructor] S
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/-- info: ⟨1, 2⟩ : S -/
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#guard_msgs in #check {x := 1, y := 2 : S}
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