[Parser] Don't warn about unescaping the _ in foo(_: 3).
#8252
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foo(_: 3) is equivalent to foo(3), so calling a function that has _ as an argument label (func foo(`_`: 3)) still requires the _ to be escaped. Before this patch, the compiler would suggest removing the `s, even though that changes behaviour. Fixes rdar://problem/31077797.
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@swift-ci Please smoke test |
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:-( I think it's still a bug that we take |
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foo(_: 3)is equivalent tofoo(3), so calling a function that has _ asan argument label (
func foo(`_`: 3)) still requires the _ to beescaped. Before this patch, the compiler would suggest removing the `s,
even though that changes behaviour.
Fixes rdar://problem/31077797.