# File lib/heroku/client.rb, line 225
  def run_console_command(url, command, prefix=nil)
    output = post(url, command).to_s
    return output unless prefix
    if output.include?("\n")
      lines  = output.split("\n")
      (lines[0..-2] << "#{prefix}#{lines.last}").join("\n")
    else
      prefix + output
    end
  rescue RestClient::RequestFailed => e
    if Heroku::Command.parse_error_xml(e.http_body)
      Heroku::Command.extract_error(e.http_body)
    elsif e.http_code == 422
      e.http_body
    else
      raise e
    end
  end