(command.CommandList
  children: [
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:tid)
          op: assign_op.Equal
          rhs: {(DQ <'stderr data transfer'>)}
          spids: [7]
        )
      ]
    )
    (command.ForEach
      iter_name: n
      iter_words: [{(SQ )} {<-n>}]
      do_arg_iter: F
      body: 
        (command.DoGroup
          children: [
            (command.ForEach
              iter_name: p
              iter_words: [{(${ Id.VSub_Name SSH_PROTOCOLS)}]
              do_arg_iter: F
              body: 
                (command.DoGroup
                  children: [
                    (C {<verbose>} 
                      {
                        (DQ <'test '> ($ Id.VSub_DollarName '$tid') <': proto '> 
                          ($ Id.VSub_DollarName '$p') <' ('> ($ Id.VSub_DollarName '$n') <')'>
                        )
                      }
                    )
                    (command.Simple
                      words: [
                        {(${ Id.VSub_Name SSH)}
                        {($ Id.VSub_DollarName '$n')}
                        {<-> ($ Id.VSub_DollarName '$p')}
                        {<-F>}
                        {($ Id.VSub_DollarName '$OBJ') <'/ssh_proxy'>}
                        {<otherhost>}
                        {<exec>}
                        {<sh>}
                        {<-c>}
                        {(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\\''>) 
                          (DQ <'exec > /dev/null; sleep 3; cat '> (${ Id.VSub_Name DATA) <' 1>&2 '> 
                            ($ Id.VSub_DollarName '$s')
                          ) (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\\''>)
                        }
                      ]
                      redirects: [
                        (redir
                          op: <Id.Redir_Great '2>'>
                          loc: (redir_loc.Fd fd:2)
                          arg: {(${ Id.VSub_Name COPY)}
                        )
                      ]
                      do_fork: T
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:r)
                          op: assign_op.Equal
                          rhs: {($ Id.VSub_QMark '$?')}
                          spids: [98]
                        )
                      ]
                    )
                    (command.If
                      arms: [
                        (if_arm
                          cond: 
                            (condition.Shell
                              commands: [
                                (command.Sentence
                                  child: 
                                    (C {<Id.Lit_LBracket '['>} {($ Id.VSub_DollarName '$r')} {<-ne>} 
                                      {<0>} {<Id.Lit_RBracket ']'>}
                                    )
                                  terminator: <Id.Op_Semi _>
                                )
                              ]
                            )
                          action: [
                            (C {<fail>} 
                              {(DQ <'ssh failed with exit code '> ($ Id.VSub_DollarName '$r'))}
                            )
                          ]
                          spids: [102 115]
                        )
                      ]
                    )
                    (command.AndOr
                      ops: [Id.Op_DPipe]
                      children: [
                        (C {<cmp>} {(${ Id.VSub_Name DATA)} {(${ Id.VSub_Name COPY)})
                        (C {<fail>} {(DQ <'stderr corrupt'>)})
                      ]
                    )
                    (C {<rm>} {<-f>} {(${ Id.VSub_Name COPY)})
                    (command.Simple
                      words: [
                        {(${ Id.VSub_Name SSH)}
                        {($ Id.VSub_DollarName '$n')}
                        {<-> ($ Id.VSub_DollarName '$p')}
                        {<-F>}
                        {($ Id.VSub_DollarName '$OBJ') <'/ssh_proxy'>}
                        {<otherhost>}
                        {<exec>}
                        {<sh>}
                        {<-c>}
                        {(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\\''>) 
                          (DQ <'echo a; exec > /dev/null; sleep 3; cat '> (${ Id.VSub_Name DATA) 
                            <' 1>&2 '> ($ Id.VSub_DollarName '$s')
                          ) (word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\\''>)
                        }
                      ]
                      redirects: [
                        (redir
                          op: <Id.Redir_Great '>'>
                          loc: (redir_loc.Fd fd:1)
                          arg: {<'/dev/null'>}
                        )
                        (redir
                          op: <Id.Redir_Great '2>'>
                          loc: (redir_loc.Fd fd:2)
                          arg: {(${ Id.VSub_Name COPY)}
                        )
                      ]
                      do_fork: T
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:r)
                          op: assign_op.Equal
                          rhs: {($ Id.VSub_QMark '$?')}
                          spids: [206]
                        )
                      ]
                    )
                    (command.If
                      arms: [
                        (if_arm
                          cond: 
                            (condition.Shell
                              commands: [
                                (command.Sentence
                                  child: 
                                    (C {<Id.Lit_LBracket '['>} {($ Id.VSub_DollarName '$r')} {<-ne>} 
                                      {<0>} {<Id.Lit_RBracket ']'>}
                                    )
                                  terminator: <Id.Op_Semi _>
                                )
                              ]
                            )
                          action: [
                            (C {<fail>} 
                              {(DQ <'ssh failed with exit code '> ($ Id.VSub_DollarName '$r'))}
                            )
                          ]
                          spids: [210 223]
                        )
                      ]
                    )
                    (command.AndOr
                      ops: [Id.Op_DPipe]
                      children: [
                        (C {<cmp>} {(${ Id.VSub_Name DATA)} {(${ Id.VSub_Name COPY)})
                        (C {<fail>} {(DQ <'stderr corrupt'>)})
                      ]
                    )
                    (C {<rm>} {<-f>} {(${ Id.VSub_Name COPY)})
                  ]
                )
            )
          ]
        )
    )
  ]
)