lambdapi
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Add notations with place-holders
@rlepigre proposes to define notations with « place-holders » with priorities like:
- "if _ then _ else _",
- "_ ⊢ _ : _", _ "⟦ _ ⟧",
- "_ + _", et _ "! _".
The article Parsing Mixfix Operators by Danielsson and Norell might be useful in this endeavour.