--auto-gen-config doesn't disable Syntax related offences

[akhanubis]

It seems that the offences related to new cops derivated from Syntax keep 'Syntax' as cop_name and thus rubocop-todo.yml ends up disabling a missing cop. As a result, when runing rubocop using the autogenerated config , the related offences don't get disabled.

Source:

# encoding: utf-8
puts *[1, 2, 3]

Run:

$ rubocop --auto-gen-config
Inspecting 1 file
W

Offences:

render.rb:2:3: W: `*' interpreted as argument prefix
p *[1, 2, 3]
  ^

1 file inspected, 1 offence detected
Created rubocop-todo.yml.
Run rubocop with --config rubocop-todo.yml, or
add inherit_from: rubocop-todo.yml in a .rubocop.yml file.

rubocop-todo.yml generated:

# This configuration was generated by `rubocop --auto-gen-config`.
# The point is for the user to remove these configuration records
# one by one as the offences are removed from the code base.

Syntax:
  Enabled: false

Rerun:

$ rubocop --config rubocop-todo.yml
Inspecting 1 file
W

Offences:

render.rb:2:3: W: `*' interpreted as argument prefix
p *[1, 2, 3]
  ^

1 file inspected, 1 offence detected

[yujinakayama]

Yes, it's a known issue. Syntax offences cannot be disabled currently (neither configuration nor --only option).

Currently I'm working on it and probably it will be fixed in next version.

[akhanubis]

Ahh perfect! Thanks.