[timlyo]

The error message catalogue [1] mentioned at the end of that first blog is interesting, wonder if Rust would benefit from something similar.

[1] https://github.com/elm-lang/error-message-catalog

[dbaupp]

Rust has a strong policy of adding tests when adding/changing code, so almost all error messages are tested in some form, including "UI" tests, that check the exact formatting.

Additionally, there's https://doc.rust-lang.org/error-index.html