lean4-htt/tests/lean/eta_tac.lean

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Text

open tactic
set_option pp.binder_types true
set_option pp.implicit true
set_option pp.notation false
example (a : nat) : true :=
by do
mk_const `add >>= eta_expand >>= trace,
mk_const `nat.succ >>= eta_expand >>= trace,
to_expr `(add a) >>= eta_expand >>= trace,
to_expr `(λ x : nat, add x) >>= eta_expand >>= trace,
constructor