9cb114eb83
* Setting `pp.mvars` to false causes metavariables to pretty print as `?_`. * Setting `pp.mvars.withType` to true causes metavariables to pretty print with type ascriptions. Motivation: when making tests, it is inconvenient using `#guard_msgs` when there are metavariables, since the unique numbering is subject to change. This feature does not use `⋯` omissions since a metavariable is already in a sense an omitted term. If repeated metavariables do not appear in an expression, there is a chance that a term pretty printed with `pp.mvars` set to false can still elaborate to the correct term, unlike for other omissions. (In the future we could consider an option that pretty prints uniquely numbered metavariables as `?m✝`, `?m✝¹`, `?m✝²`, etc. to be able to tell them apart, at least in the same pretty printed expression. It would take care to make sure that these names are stable across different hovers.) Closes #3781
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50 lines
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/-!
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# Testing `pp.mvars`
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-/
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/-!
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Default values
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-/
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/-- info: ?a : Nat -/
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#guard_msgs in #check (?a : Nat)
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/-!
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Turning off `pp.mvars`
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-/
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section
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set_option pp.mvars false
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/-- info: ?_ : Nat -/
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#guard_msgs in #check (?a : Nat)
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/-- info: ?_ : Nat -/
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#guard_msgs in #check (_ : Nat)
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end
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/-!
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Turning off `pp.mvars` and turning on `pp.mvars.withType`.
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-/
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section
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set_option pp.mvars false
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set_option pp.mvars.withType true
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/-- info: (?_ : Nat) : Nat -/
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#guard_msgs in #check (?a : Nat)
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/-- info: (?_ : Nat) : Nat -/
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#guard_msgs in #check (_ : Nat)
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end
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/-!
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Turning on `pp.mvars.withType`.
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-/
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section
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set_option pp.mvars.withType true
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/-- info: (?a : Nat) : Nat -/
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#guard_msgs in #check (?a : Nat)
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end
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