index_name_options

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 1258
      def index_name_options(column_names) # :nodoc:
        if column_names.is_a?(String)
          column_names = column_names.scan(/\w+/).join('_')
        end

        { column: column_names }
      end