e337129108
This PR ensures that names suggested by tactics like `simp?` are not shadowed by auxiliary declarations in the local context and that names of `let rec` and `where` declarations are correctly resolved in tactic blocks. This PR contains the following potentially breaking changes: * Moves the `auxDeclToFullName` map from `TermElab.Context` to `LocalContext`. * Refactors `Lean.Elab.Term.resolveLocalName : Name → TermElabM …` to `Lean.resolveLocalName [MonadResolveName m] [MonadEnv m] [MonadLCtx m] : Name → m …`. * Refactors the `TermElabM` action `Lean.Elab.Term.withAuxDecl` to a monad-polymorphic action `Lean.Meta.withAuxDecl`. * Adds an optional `filter` argument to `Lean.unresolveNameGlobal`. Closes #6706, closes #7073.
25 lines
568 B
Text
25 lines
568 B
Text
/-!
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# Auxiliary declaration name resolution in tactic blocks
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https://github.com/leanprover/lean4/issues/7073
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It should be possible to refer to auxiliary declarations by partially- or fully-qualified names
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in tactic blocks.
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-/
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theorem A : True ∧ True := by
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let rec B := trivial
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exact And.intro A.B A.C
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where C := trivial
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namespace M
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theorem N : True ∧ True ∧ True :=
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let rec O := by exact M.N.P
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by exact ⟨N.O, M.N.O, N.P⟩
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where P := trivial
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theorem Q.R : Nat → True
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| 0 => trivial
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| 1 => by exact Q.R 0
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| n + 2 => by exact M.Q.R (n + 1)
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