655ec964f5
Given
```lean
structure A where
x : Nat
structure B extends A where
y : Nat
```
rather than pretty printing `{ x := 1, y := 2 : B }` as `{ toA := { x :=
1 }, y := 2 }`, it now pretty prints as `{ x := 1, y := 2 }`.
The option `pp.structureInstances.flatten` controls whether to flatten
structure instances like this.
53 lines
682 B
Text
53 lines
682 B
Text
/-!
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# Testing left to right semantics for field instantiation
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Implemented in PR #2478 for issue #2451.
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-/
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set_option pp.structureInstances.flatten false
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structure A where
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x : Nat
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structure B where
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x : Nat
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y : Nat
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/-!
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Uses a.x
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-/
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def foo (a : A) (b : B) : B := {a, b with}
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/-!
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Uses only b
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-/
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def boo (a : A) (b : B) : B := {b, a with}
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structure C extends B
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/-!
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Uses a.x
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-/
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def baz (a : A) (b : B) : C := {a, b with}
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/-!
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Uses only b
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-/
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def biz (a : A) (b : B) : C := {b, a with}
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/-!
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Uses a.x
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-/
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def faz (a : A) (c : C) : C := {a, c with}
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/-!
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Uses only b
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-/
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def fiz (a : A) (c : C) : C := {c, a with}
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#print foo
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#print boo
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#print baz
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#print biz
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#print faz
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#print fiz
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