- This was funny (and embarrassing), I was looking at my first contributions to
Homebrew since someone asked me how long I'd been involved.
- Turns out that in 2017 I improved the formula description RuboCop rule to
allow descriptions to end with `etc.` in
https://github.com/Homebrew/brew/pull/3411. Apparently I didn't have time
back then to write a test for it. So now I will remedy this 5 years later.
The main class you should look at is the {Formula} class (and classes linked from there). That's the class that's used to create Homebrew formulae (i.e. package descriptions). Assume anything else you stumble upon is private.