Style/MethodDefParentheses doesn't support mix

[zenspider]

OK. I came across an actual conflict. "Seattle-Style" eschews parens on method declarations unless the args span multiple lines:

  def self.pie_chart(diameter, pct_green,
                     good_color = PNG::Color::Green,
                     bad_color = PNG::Color::Red)

This is usually only when there are long names or defaults that cause the declaration to go over 80 chars.

The defaults are currently:

Style/MethodDefParentheses:
  EnforcedStyle: require_parentheses
  SupportedStyles:
    - require_parentheses
    - require_no_parentheses

but could use another, called require_no_parethesis_except_multiline or something.

[bbatsov]

Sounds reasonable to me.