Merge #11238

11238: fix: shrink the span of errors from attribute macros and derives r=jonas-schievink a=jonas-schievink

Some procedural macros tend to get very large invocations, for example RTIC's, leading to issues like https://github.com/rtic-rs/cortex-m-rtic/issues/582, where almost the entire screen is underlined while editing incomplete code in the macro.

This PR shrinks the spans of errors from attribute macros and derives to point only at the attribute, which also matches rustc more closely.

bors r+

Co-authored-by: Jonas Schievink <jonas.schievink@ferrous-systems.com>
tree: 86cc1eb6c7f90d6f718fbe3bc2955276b316f91f
  1. .cargo/
  2. .github/
  3. .vscode/
  4. assets/
  5. bench_data/
  6. crates/
  7. docs/
  8. editors/
  9. lib/
  10. xtask/
  11. .gitattributes
  12. .gitignore
  13. bors.toml
  14. Cargo.lock
  15. Cargo.toml
  16. LICENSE-APACHE
  17. LICENSE-MIT
  18. PRIVACY.md
  19. README.md
  20. rustfmt.toml
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