I took this for a test drive, and had some comments.on the user visible parts.
[...]
But I think these belong as CONTEXT or as DETAIL, not as HINT. The messages are giving me details about where (which column) the error occurred, they aren't giving suggestions to me about what to do about it.
Hi Jeff,
Somehow my email never went through. So thank you for the test drive, I've tried to update my patch (that you will find attached) to reflect what you said (DETAIL instead of HINT).
Thanks Tom for pointing me at the docs, I clearly wasn't respecting the guidelines.