f30ff6ae79
in #4154 and #5129 the rules for equational lemmas have changed, and new options were introduced that can be used to revert to the pre-4.12 behavior. Hopefully nobody really needs these options besides for backwards compatibility, therefore we put these options in the `backward` option name space. So the previous behavior can be achieved by setting ```lean set_option backward.eqns.nonrecursive false set_option backward.eqns.deepRecursiveSplit false ```
55 lines
969 B
Text
55 lines
969 B
Text
/-! Tests that options affecting equational theorems work as expected. -/
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namespace Test1
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def nonrecfun : Bool → Nat
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| false => 0
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| true => 0
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/--
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info: equations:
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theorem Test1.nonrecfun.eq_1 : nonrecfun false = 0
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theorem Test1.nonrecfun.eq_2 : nonrecfun true = 0
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-/
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#guard_msgs in
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#print equations nonrecfun
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end Test1
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namespace Test2
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set_option backward.eqns.nonrecursive false in
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def nonrecfun : Bool → Nat
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| false => 0
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| true => 0
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/--
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info: equations:
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theorem Test2.nonrecfun.eq_def : ∀ (x : Bool),
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nonrecfun x =
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match x with
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| false => 0
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| true => 0
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-/
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#guard_msgs in
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#print equations nonrecfun
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end Test2
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namespace Test3
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def nonrecfun : Bool → Nat
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| false => 0
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| true => 0
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-- should have no effect
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set_option backward.eqns.nonrecursive false
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/--
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info: equations:
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theorem Test3.nonrecfun.eq_1 : nonrecfun false = 0
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theorem Test3.nonrecfun.eq_2 : nonrecfun true = 0
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-/
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#guard_msgs in
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#print equations nonrecfun
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end Test3
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