I don't anymore and when I did the code didn't change much. But I haven't seen anyone mentioning processing the AST. Some things would break between changes, b

I don't anymore and when I did the code didn't change much. But I haven't seen anyone mentioning processing the AST. Some things would break between changes, but if the language the code uses has a good AST traversal library, you could assign your notes to parts of the tree rather than source code locations, falling back to source code locations when that fails. It would still need manual maintenance, but would at least be less fragile than using solely line locations.