Include the match arm guard in the gated span, so that the suggestion to add a body is correct instead of inserting the body before the guard.
Make the suggestion verbose.
```
error: `match` arm with no body
--> $DIR/feature-gate-never_patterns.rs:43:9
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LL | Some(_) if false,
| ^^^^^^^^^^^^^^^^
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help: add a body after the pattern
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LL | Some(_) if false => { todo!() },
| ++++++++++++++
```
26 lines
710 B
Plaintext
26 lines
710 B
Plaintext
error: macro expansion ignores `=>` and any tokens following
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--> $DIR/macro-expand-to-match-arm.rs:3:18
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LL | $pattern => $block
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| ^^
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...
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LL | arm!(None => {}),
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| ---------------- caused by the macro expansion here
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= note: the usage of `arm!` is likely invalid in pattern context
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= note: macros cannot expand to match arms
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error: `match` arm with no body
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--> $DIR/macro-expand-to-match-arm.rs:14:9
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LL | arm!(None => {}),
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| ^^^^^^^^^^^^^^^^
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help: add a body after the pattern
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LL | arm!(None => {}) => { todo!() },
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| ++++++++++++++
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error: aborting due to 2 previous errors
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