ca5439c698
closes #1634 This commit also changes the semantic of `tactic.focus [tac_1, ..., tac_n]`. It now fails if the number of goals is not `n`. Before it would only fail if there were more tactics than goals. @Armael: See tests/lean/run/handthen.lean for examples of the new notation.
29 lines
816 B
Text
29 lines
816 B
Text
lemma ex3 (a b c : nat) : a + 0 = 0 + a ∧ b = b :=
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begin
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constructor ; [skip, skip, skip]
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--^ The "insufficient number of goals" error message should be reported here.
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end
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lemma ex4 (a b c : nat) : a + 0 = 0 + a ∧ b = b :=
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begin
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constructor; [skip, skip, skip]
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--^ Flycheck reports the error here if the `;` occurs immediately after the first tactic.
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-- This is not ideal, but this is a flycheck issue. Ther error is reported in the right place by Lean.
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end
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lemma ex5 (a : nat) : a = a ∧ a = a :=
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begin
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constructor ; [refl]
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--^ "insufficient number of tactics" error
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end
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lemma ex6 (a : nat) : a = a ∧ a = a :=
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begin
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constructor ; []
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--^ "insufficient number of tactics" error
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end
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lemma ex7 (a : nat) : a = a ∧ a = a :=
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begin
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constructor ; [refl, refl]
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end
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