IndentHash with separator style AlignHash

[yujinakayama]

With this AlignHash separator style hash:

      CONVERSION_CORRESPONDENCE = {
                      match_for_should: :match,
                  match_for_should_not: :match_when_negated,
            failure_message_for_should: :failure_message,
        failure_message_for_should_not: :failure_message_when_negated
      }

... IndentHash registers an offense:

lib/transpec/syntax/matcher_definition.rb:12:23: C: IndentHash: Use 2 spaces for indentation in a hash, relative to the start of the line where the left curly brace is.
                      match_for_should: :match,
                      ^^^^^^^^^^^^^^^^^^^^^^^^

However, the pairs cannot be aligned if the first pair is indented with 2 spaces relative to the left curly line, since there is not enough left space in the failure_message_for_should_not: line. IMO, in this case, the longest key should be the target of IndentHash.

Also autocorrection breaks the code:

      CONVERSION_CORRESPONDENCE = {
        match_for_should: :match,
    match_for_should_not: :match_when_negatedfailure_message_for_should: :failure_mesfailure_message_for_should_not: :failure_message_when_negated
      }

0.19.0 (using Parser 2.1.7, running on ruby 2.1.1 x86_64-darwin13.0)

@jonas054 Can you take a look?

[jonas054]

@yujinakayama Yes!