18 lines
515 B
Text
18 lines
515 B
Text
exit -- TODO(Leo): enable test again after we add rfl lemma support to type_context
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open tactic
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meta definition rewriteH (Hname : name) : tactic unit :=
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do get_local Hname >>= rewrite_core reducible tt occurrences.all ff,
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try reflexivity
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example (l : list nat) : list.append l [] = l :=
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by do
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get_local `l >>= λ H, induction_core semireducible H `list.rec_on [`h, `t, `iH],
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--
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unfold [`list.append],
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trace_state,
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trace "------",
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reflexivity,
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unfold [`list.append],
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trace_state,
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rewriteH `iH
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