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github.com
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leanprover
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lean4
/
refs/heads/upstream/expose-array-back
/
.
/
tests
/
elab
/
traceElabIssue.lean
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set_option trace
.
Elab
true
inductive
Vec
(α
:
Type
u
)
:
Nat
→
Type
u
|
nil
:
Vec
α
Nat
.
zero
|
cons
{
n
:
Nat
}
:
(
head
:
α)
→
(
tail
:
Vec
α
n
)
→
Vec
α
(
Nat
.
succ n
)