Using the --fix option with --stdin appends file content to the json result

[jgiovaresco]

When I run the following commands standardrb --format json --force-exclusion --stdin application_controller.rb < app/controllers/application_controller.rb, I can see the result

{"metadata":{"rubocop_version":"0.90.0","ruby_engine":"ruby","ruby_version":"2.7.0","ruby_patchlevel":"0","ruby_platform":"x86_64-darwin19"},"files":[{"path":"Gemfile","offenses":[]}],"summary":{"offense_count":0,"target_file_count":1,"inspected_file_count":1}}% 

However when I run standardrb --format json --force-exclusion --fix --stdin Gemfile < app/controllers/application_controller.rb, I have the result

{"metadata":{"rubocop_version":"0.90.0","ruby_engine":"ruby","ruby_version":"2.7.0","ruby_patchlevel":"0","ruby_platform":"x86_64-darwin19"},"files":[{"path":"Gemfile","offenses":[]}],"summary":{"offense_count":0,"target_file_count":1,"inspected_file_count":1}}====================
class ApplicationController < ActionController::API
end

As you can see, the content of the linted file is appended to the JSON result.

This prevent tools (like RubyMine) to parse the response (https://youtrack.jetbrains.com/issue/RUBY-27006)

[jmkoni]

I was able to replicate this issue with a project I have. I also tried running the same command with rubocop and this seems to be an issue with rubocop that is filtering up to standard:

rubocop --format json --force-exclusion --fix --stdin application_controller.rb < app/controllers/application_controller.rb
{"metadata":{"rubocop_version":"0.90.0","ruby_engine":"ruby","ruby_version":"2.7.1","ruby_patchlevel":"83","ruby_platform":"x86_64-darwin19"},"files":[{"path":"application_controller.rb","offenses":[]}],"summary":{"offense_count":0,"target_file_count":1,"inspected_file_count":1}}====================
class ApplicationController < ActionController::Base

[jmkoni]

@jgiovaresco Since this is a rubocop bug, I would recommend opening up an issue in rubocop

[jgiovaresco]

Done: rubocop/rubocop#8673

[jmkoni]

@jgiovaresco I'm watching that issue now. Thanks for creating it 😄