020da5bffb
This PR fixes an issue when including a hard line break in a `Format` that caused subsequent (ordinary) line breaks to be erroneously flattened to spaces. This issue is especially important for displaying notes and hints in error messages, as these components could appear garbled due to improper line-break rendering.
31 lines
614 B
Text
31 lines
614 B
Text
structure T : Prop
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structure U : Prop
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theorem foo : T → U := λ _ => {}
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theorem bar : (_ : T := by trivial) → U := λ _ => {}
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-- fails as expected
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example : U := by
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fail_if_success simp
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sorry
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-- works as expected, discharging `T` via `T.mk`
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example : U := by
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simp [foo, T.mk]
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/--
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trace: [Meta.Tactic.simp.discharge] bar discharge ✅️
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autoParam T _auto✝
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[Meta.Tactic.simp.rewrite] T.mk:1000:
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T
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==>
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True
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[Meta.Tactic.simp.rewrite] bar:1000:
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U
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==>
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True
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-/
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#guard_msgs in
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example : U := by
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set_option trace.Meta.Tactic.simp true in
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simp [bar, T.mk]
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