d1a99d8d45
This PR prevents `Nat.succ ?_` from pretty printing as `?_.succ`, which should make `apply?` be more usable. Closes #5993
32 lines
719 B
Text
32 lines
719 B
Text
/-!
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# Avoid delaborating with field notation if object is a metavariable application.
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https://github.com/leanprover/lean4/issues/5993
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-/
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set_option pp.mvars false
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/-!
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No field notation notation here. Used to print `refine ?_.succ` and `refine ?_.snd`.
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-/
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/--
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info: Try this: refine Nat.succ ?_
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---
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info: Try this: refine Prod.snd ?_
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-/
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#guard_msgs in
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example : Nat := by
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show_term refine Nat.succ ?_
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show_term refine Prod.snd (α := Int) ?_
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exact default
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/-!
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No field notation even under binders. (That is, be aware of delayed assignment metavariables.)
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-/
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/-- info: Try this: refine fun x => Nat.succ ?_ -/
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#guard_msgs in
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example : Nat → Nat := by
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show_term refine fun _ => Nat.succ ?_
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exact default
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