(command.CommandList
  children: [
    (command.AndOr
      ops: [Id.Op_DPipe]
      children: [
        (C {<.>} {<'sources/utility_functions.sh'>})
        (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>})
      ]
    )
    (command.AndOr
      ops: [Id.Op_DAmp]
      children: [
        (C {<Id.Lit_LBracket '['>} {<-z>} {(DQ (${ Id.VSub_Name ARCHES))} {<Id.Lit_RBracket ']'>})
        (command.ShAssignment
          pairs: [
            (assign_pair
              lhs: (sh_lhs_expr.Name name:ARCHES)
              op: assign_op.Equal
              rhs: 
                {
                  (DQ 
                    (command_sub
                      left_token: <Id.Left_DollarParen '$('>
                      child: (C {<ls>} {<'sources/targets'>})
                    )
                  )
                }
              spids: [41]
            )
          ]
        )
      ]
    )
    (command.ForEach
      iter_name: TARGET
      iter_words: [{($ Id.VSub_DollarName '$ARCHES')}]
      do_arg_iter: F
      body: 
        (command.DoGroup
          children: [
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (C {<Id.Lit_LBracket '['>} {<Id.KW_Bang '!'>} {<-f>} 
                  {(DQ <'sources/targets/'> ($ Id.VSub_DollarName '$TARGET'))} {<Id.Lit_RBracket ']'>}
                )
                (command.ControlFlow token:<Id.ControlFlow_Continue continue>)
              ]
            )
            (C {<announce>} {(DQ ($ Id.VSub_DollarName '$TARGET') <' running'>)})
            (C {<maybe_fork>} {(DQ ($ Id.VSub_Star '$*') <' 2>&1 | maybe_quiet'>)})
          ]
        )
    )
    (C {<wait>})
  ]
)