Rubocop only to check modified lines

Question

I would like to run rubocop on the terminal only for the lines that I have modified within a git versioned project. Currently, from googling, I see scripts which work on the entire modified file.

I found this but what I understand from the documentation is that it shows false positives and negatives.

Answer 1

Pronto is gem that can do that - install pronto and pronto-rubocop.

If you want you can use this gist https://gist.github.com/alkuzad/dd729aca36a810892772 that I've used a lot before I was using pronto (it's still handy because pronto is not so flexible about diff). You have to install showlinenum from https://github.com/jay/showlinenum to ~/bin to get it work (or just modify the path in gist)