False positive suggesting "better of" → "better off"

> Maybe after cap replaced voltage changed for **better of course** and it was needed to adjust it with that potenciometer.

In this case the construction of the sentence is a bit awkward but we should still be able to rule out "of" when it's part of "of course".

Search the Rust codebase for the rule or diagnostic that suggests “better off.” Add a regression case for “better of course” and verify that the suggestion is not reported while the intended “better off” correction remains covered. Done means this phrase no longer produces the false positive.

Written by the indexing model from the issue text.