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macro_error in proc_macro_error - Rust
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Macro proc_macro_error::macro_error

source ยท
macro_rules! macro_error {
    ($span:expr, $fmt:expr, $($args:expr),+) => { ... };
    ($span:expr, $msg:expr) => { ... };
}
Expand description

Shortcut for MacroError::new($span.into(), format!($fmt, $args...))