bug#60186: 29.0.60; ruby-mode indentation of multi-line expressions

[Aaron Jensen]

Follow-up to bug#60110

I prefer rather simplictic indentation for Ruby (and this appears to be
pretty common from codebases I've seen). Essentially, the rule is: If an
expression continues on another line, indent it once. 

Current:

some_variable = some_object.
                  some_method

Desired:

some_variable = some_object.
  some_method

Current:

some_variable = some_number + some_other_number *
                              some_third_number + some_fourth_number -
                some_fifth_number

Desired:

some_variable = some_number + some_other_number *
  some_third_number + some_fourth_number -
  some_fifth_number


I don't know if this last one is related or not, but it follows the same
rule plus the rule about blocks. Everything about the continuation of
the expression is indented once. The contents of the block are indented
once more. The end should line up with the line that opened the block.

Current:

some_variable = some_array.
                  map do |x|
  x + 1
end

Desired:

some_variable = some_array.
  map do |x|
    x + 1
  end