OptparsePlus Internal - treat as private

ExecutionStrategy for non-modern Rubies that must rely on Open4 to get access to the standard output AND error.

Methods
R
Instance Public methods
run_command(command)

Source: show 

# File lib/optparse_plus/execution_strategy/open_4.rb, line 8
def run_command(command)
  pid, stdin_io, stdout_io, stderr_io =
    case command
    when String then Open4::popen4(command)
    else Open4::popen4(*command)
    end
  stdin_io.close
  stdout = stdout_io.read
  stderr = stderr_io.read
  _ , status = Process::waitpid2(pid)
  [stdout.chomp,stderr.chomp,status]
end