miniblog.

TIL rustc has a style guide for suggestions! https://rustc-dev-guide.rust-lang.org/diagnostics.html#suggestion-style-guide They recommend avoiding 'did you mean' or 'the following' in favour of direct suggestions and highlighted positions.

Adding an argument to a function is a really compelling case for syntactic diffs. Line numbers remain super tricky: mapping overlapping positions spanning multiple lines back to lines isn't quite right yet.

Lessons learned from writing a linter/static analysis tool for shell scripts: https://www.vidarholen.net/contents/blog/?p=859 (Preserve positions, use error codes and document them, and there's a tradeoff between beginner mistakes and advanced mistakes!)