JovanGerb
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d69a8eff3f
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fix: deduplicate elaboration of constant argument to rw (#8232)
This PR fixes elaboration of constants in the `rewrite` tactic.
previously, `rw [eq_self]` would elaborate `eq_self` twice, and add it
to the infotree twice. This would lead to the "Expected type" being
delaborated with an unknown universe metavariable.
I added a test to show this error during delaboration of the "Expected
type".
This was reported on Zulip as a panic message during delaboration:
[#mathlib4 > Crash in `sup`/`inf` /
`max`/`min`
delaborators](https://leanprover.zulipchat.com/#narrow/channel/287929-mathlib4/topic/Crash.20in.20.60sup.60.2F.60inf.60.20.2F.20.60max.60.2F.60min.60.20delaborators/with/515946714)
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2025-05-15 11:33:10 +00:00 |
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