lean4-htt/tests/lean/auto_quote_error2.lean

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example (a b c : nat) : a = b → b = c → c = a :=
begin
tactic.intros,
apply eq.symm,
apply eq.refl, -- Error: unification
assumption,
assumption
end
example (a b c : nat) : a = b → b = c → c = a :=
begin
tactic.intros,
apply eq.symm,
begin
tactic.trace "hello world",
end, -- Error unsolved goals
assumption,
assumption
end
example (a b c : nat) : a = b → b = c → c = a :=
begin
tactic.intros,
apply eq.symm,
apply eq.trans,
begin
tactic.trace "hello world",
end, -- Error unsolved goals (remark: nested 'begin ... end' blocks focus on the main goal)
assumption
end
example (a b c : nat) : a = b → b = c → c = a :=
begin
intro h1, intro h2,
apply eq.symm,
begin
exact eq.trans h1 _, -- Error unsolved
end,
end
example (a b : nat) : a = 0 → b = 0 → a = b ∧ b = a :=
begin
intros h1 h2,
split,
{ subst h1 },
--^ error should be at `}`
end
example : true :=
begin
{ have h' := eq.refl _ },
--^ error should be at `}`
end