FirstParameterIndentation and Rubymine 4-spaces continued indentations

[maia]

Rubymine will (per default) use 4-spaces indentation in multi lines (hashes, method calls, etc), causing a problem with Style/FirstParameterIndentation:

$ cat test.rb
class Test < ActiveRecord::Base
  def do_something
    update(
        column_a: some_value,
        column_b: other_value
    )
  end
end

Style/FirstParameterIndentation sees a problem here:

$ rubocop test.rb --only Style/FirstParameterIndentation
Inspecting 1 file
C

Offenses:

test.rb:4:9: C: Indent the first parameter one step more than the start of the previous line.
        column_a: some_value,
        ^^^^^^^^^^^^^^^^^^^^^

1 file inspected, 1 offense detected

The Rubymine settings are:

[ ] Use tab character
Tab size: 2
Indent: 2
Continuation indent: 4
[ ] Keep indents on empty lines
[x] Use indents relative to expression start

There was a related problem with multi line method calls at #1633 which was fixed by @jonas054 by adding MultilineMethodCallIndentation. What can be done with FirstParameterIndentation?

[alexdowad]

Working on a fix for this one.

[maia]

Thanks!