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By using `token_descr`, as is done for many other errors, we can get slightly better descriptions in error messages, e.g. "macro expansion ignores token `let` and any following" becomes "macro expansion ignores keyword `let` and any tokens following". This will be more important once invisible delimiters start being mentioned in error messages -- without this commit, that leads to error messages such as "error at ``" because invisible delimiters are pretty printed as an empty string.
12 lines
163 B
Rust
12 lines
163 B
Rust
macro_rules! m {
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() => {
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let //~ ERROR macro expansion ignores keyword `let` and any tokens following
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};
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}
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extern "C" {
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m!();
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}
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fn main() {}
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