Opting-out of cops at the command line

[fj]

I'd like a way to say:

• run lint checks
• run all the other cops, except this list

IOW, I was looking for something like, e.g.:

rubocop --lint --except Style/Tab,Style/ConstantName,Metrics/CyclomaticComplexity

Right now the workaround I've been using is to use --only with a very long list in a Rake task, but that's not very maintainable.

You can also do this via a configuration file. But it's much easier to specify these at the command line for things like, e.g., special Rake tasks and CI runs -- that's nice because you're documenting the arguments in the same spot as where you're invoking Rubocop. When you use a configuration file, you have to check two places instead of one.

[bbatsov]

run all the other cops, except this list

By "all the cops" you mean all cops that are enabled in the config, right?

[fj]

Right, all enabled cops (they're all enabled by default, right?).

[jonas054]

If you want to run all (enabled) cops except a specified list, then the lint cops will be included. You don't need --lint. And even though we don't support an --except option, it's pretty simple to put the list in a configuration file:

rubocop --config except.yml

# except.yml
inherit_from: .rubocop.yml

Style/Tab:
  Enabled: false

Style/ConstantName:
  Enabled: false

Metrics/CyclomaticComplexity:
  Enabled: false

[fj]

@jonas054 I don't think my issue title was specific enough; I agree that you can do this via a configuration file. But it's much easier to specify these at the command line for things like, e.g., special Rake tasks and CI runs -- that's nice because you're documenting the arguments in the same spot as where you're invoking Rubocop. When you use a configuration file, you have to check two places instead of one.

[jonas054]

If someone wants to add an --except option, I'd be fine with it. Not sure if I have time to do it myself, but I think it makes sense to have it.

[fj]

Thanks @jonas054! 👍 ✖️ 💯