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Merge pull request #36 from samuelgruetter/ltac_lecture_comment

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explain why recursive [inster] can fail
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Adam Chlipala 2020-03-02 11:45:36 -05:00 committed by GitHub
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IntroToProofScripting.v
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@ -518,7 +518,8 @@ Ltac inster n :=
end end
end. end.
(* Important: when one recursive call fails, the backtracking semantics of (* Important: when one recursive call fails (happens when [n] reaches zero and
* [intuition] leaves some open goals), the backtracking semantics of
* [match goal] cause us to try the next instantiation! *) * [match goal] cause us to try the next instantiation! *)
Section test_inster. Section test_inster.