351a941756
This PR fixes an issue where `grind` did not display deprecation warnings when deprecated lemmas were used in its argument list. The fix adds explicit calls to `Linter.checkDeprecated` after resolving theorem names in both `processParam` (for theorem arguments) and `elabGrindParams` (for the `-` erase syntax). Closes #11582 🤖 Prepared with Claude Code Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
27 lines
972 B
Text
27 lines
972 B
Text
/-!
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Test that `grind` flags deprecated theorems.
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See https://github.com/leanprover/lean4/issues/11582
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-/
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set_option backward.grind.inferPattern true -- Use old pattern inference (no suggestions)
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set_option linter.deprecated true -- Enable the deprecated linter (test framework disables all linters)
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def foo : Nat := 0
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@[deprecated "use foo_eq_zero' instead" (since := "2025-01-01")]
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theorem foo_eq_zero : foo = 0 := rfl
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/-- warning: `foo_eq_zero` has been deprecated: use foo_eq_zero' instead -/
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#guard_msgs in
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example : foo = foo := by grind [foo_eq_zero]
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-- Also test the `-` syntax for erasing theorems
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@[grind]
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theorem bar_eq_zero : foo = 0 := rfl
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-- This theorem is deprecated AND marked with @[grind], so we can erase it
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@[deprecated bar_eq_zero (since := "2025-01-01"), grind]
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theorem bar_eq_zero' : foo = 0 := rfl
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/-- warning: `bar_eq_zero'` has been deprecated: Use `bar_eq_zero` instead -/
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#guard_msgs in
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example : foo = foo := by grind [- bar_eq_zero']
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