class RuboCop::Cop::Style::SpaceInsideHashLiteralBraces

def autocorrect(range)
  @corrections << lambda do |corrector|
    # It is possible that BracesAroundHashParameters will remove the
    # braces while this cop inserts spaces. This can lead to unwanted
    # changes to the inspected code. If we replace the brace with a
    # brace plus space (rather than just inserting a space), then any
    # removal of the same brace will give us a clobbering error. This
    # in turn will make RuboCop fall back on cop-by-cop
    # auto-correction.  Problem solved.
    case range.source
    when /\s/ then corrector.remove(range)
    when '{' then corrector.replace(range, '{ ')
    else corrector.replace(range, ' }')
    end
  end
end