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Rollup merge of #134877 - DavisRayM:129966-format-string-help-message, r=estebank

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add suggestion for wrongly ordered format parameters

Add suggestion for wrongly ordered format parameters like `?#`.

Supersedes #131004
Fix #129966
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Stuart Cook 2025-01-01 16:35:30 +11:00 • committed by GitHub
commit 1ea1db5b08
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7
compiler/rustc_builtin_macros/src/format.rs
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@ -321,6 +321,13 @@ fn make_format_args(
e.sugg_ = Some(errors::InvalidFormatStringSuggestion::RemoveRawIdent { span })
}
}
parse::Suggestion::ReorderFormatParameter(span, replacement) => {
let span = fmt_span.from_inner(InnerSpan::new(span.start, span.end));
e.sugg_ = Some(errors::InvalidFormatStringSuggestion::ReorderFormatParameter {
span,
replacement,
});
}
}
let guar = ecx.dcx().emit_err(e);
return ExpandResult::Ready(Err(guar));