0a56057db1
@Kha The hack I posted at Zulip didn't really work
```
macro x:ident : tactic => throw $ Lean.Macro.Exception.error x s!"unknown tactic '{x.getId}'"
```
For example, we would still get a weird error message at
```
theorem ex3 (x : Nat) : x = x → x = x :=
have x = x by foo (aaa bbb) -- The error would be at `bbb`
fun h => h
```
There were other minor issues that could be fixed, but this one was bad.
15 lines
261 B
Text
15 lines
261 B
Text
theorem ex1 (x : Nat) : x = x → x = x := by
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intro
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aexact (rfl)
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#print "---"
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theorem ex2 (x : Nat) : x = x → x = x :=
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have x = x by foo
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fun h => h
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#print "---"
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theorem ex3 (x : Nat) : x = x → x = x :=
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have x = x by foo (aaa bbb)
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fun h => h
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