class RuboCop::Cop::Layout::ExtraSpacing

def align_column(asgn_token)
  # if we removed unneeded spaces from the beginning of this =,
  # what column would it end from?
  line    = processed_source.lines[asgn_token.line - 1]
  leading = line[0...asgn_token.column]
  spaces  = leading.size - (leading =~ / *\Z/)
  asgn_token.pos.last_column - spaces + 1
end