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Rollup merge of #63488 - RalfJung:diagnostic-docs, r=zackmdavis

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improve DiagnosticBuilder docs

Cc @estebank @oli-obk

Is there any way to do something like `span_note` but with a label attached to the span? I thought `.span_note().span_label()` would do it, but no, that does not work.
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Mazdak Farrokhzad 2019-08-14 04:18:45 +02:00 committed by GitHub
commit f47226e0c4
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6
src/librustc_errors/diagnostic.rs
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@ -120,6 +120,9 @@ impl Diagnostic {
}
/// Adds a span/label to be included in the resulting snippet.
/// This label will be shown together with the original span/label used when creating the
/// diagnostic, *not* a span added by one of the `span_*` methods.
///
/// This is pushed onto the `MultiSpan` that was created when the
/// diagnostic was first built. If you don't call this function at
/// all, and you just supplied a `Span` to create the diagnostic,
@ -196,6 +199,7 @@ impl Diagnostic {
self
}
/// Prints the span with a note above it.
pub fn span_note<S: Into<MultiSpan>>(&mut self,
sp: S,
msg: &str)
@ -209,6 +213,7 @@ impl Diagnostic {
self
}
/// Prints the span with a warn above it.
pub fn span_warn<S: Into<MultiSpan>>(&mut self,
sp: S,
msg: &str)
@ -222,6 +227,7 @@ impl Diagnostic {
self
}
/// Prints the span with some help above it.
pub fn span_help<S: Into<MultiSpan>>(&mut self,
sp: S,
msg: &str)