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Uninformative error message when there is a syntax error in the call to a builder #451

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hivert opened this issue Oct 10, 2024 · 0 comments
Open

Uninformative error message when there is a syntax error in the call to a builder #451

hivert opened this issue Oct 10, 2024 · 0 comments
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easy difficulty Very easy medium priority Priority: intermediate

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@hivert
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hivert commented Oct 10, 2024

Suppose that I've set up correctly what is needed to write

HB.instance Definition _ (V : monoidType) :=
  Monoid.isLaw.Build V 1 *%M mulmA mul1m mulm1.

but if by mistake I write

HB.instance Definition _ (V : monoidType) :=
  Monoid.isLaw.Build V 1 *%M mulmA mul1m @mulm1. (* <- mind the @ here *)

HB error message is

Error: Usage: HB.instance Definition <Name> := <Builder> T ...

which is not informative.
@CohenCyril CohenCyril added easy difficulty Very easy high priority High priority medium priority Priority: intermediate and removed high priority High priority labels Dec 11, 2024
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@CohenCyril @hivert