(CommandList
  children: [
    (FuncDef
      name: getpassword
      body: 
        (BraceGroup
          children: [
            (Until
              cond: [
                (Sentence
                  child: 
                    (C {(Lit_Other "[")} {(DQ ($ VSub_Name "$password"))} {(Lit_Other "=")} 
                      {(DQ ($ VSub_Name "$rpassword"))} {(-a)} {(-n)} {(DQ ($ VSub_Name "$password"))} {(Lit_Other "]")}
                    )
                  terminator: <Op_Semi ";">
                )
              ]
              body: 
                (DoGroup
                  children: [
                    (Sentence
                      child: 
                        (C {(read)} {(-s)} {(-p)} 
                          {(DQ ("Enter a password for user '") ($ VSub_Number "$1") ("' : "))} {(password)}
                        )
                      terminator: <Op_Semi ";">
                    )
                    (SimpleCommand
                      words: [{(echo)}]
                      redirects: [(Redir op_id:Redir_GreatAnd fd:-1 arg_word:{(2)} spids:[77])]
                    )
                    (Sentence
                      child: 
                        (C {(read)} {(-s)} {(-p)} 
                          {(DQ ("Reenter password for user '") ($ VSub_Number "$1") ("' : "))} {(rpassword)}
                        )
                      terminator: <Op_Semi ";">
                    )
                    (SimpleCommand
                      words: [{(echo)}]
                      redirects: [(Redir op_id:Redir_GreatAnd fd:-1 arg_word:{(2)} spids:[98])]
                    )
                  ]
                  spids: [57 102]
                )
            )
            (C {(echo)} {(DQ ($ VSub_Name "$password"))})
          ]
          spids: [29]
        )
      spids: [25 28]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:pw)
          op: Equal
          rhs: 
            {
              (CommandSubPart
                command_list: 
                  (CommandList
                    children: [
                      (C {(getpassword)} 
                        {
                          (DQ 
                            (BracedVarSub
                              token: <VSub_Number 1>
                              suffix_op: (StringUnary op_id:VTest_ColonHyphen arg_word:{(blah)})
                              spids: [119 123]
                            )
                          )
                        }
                      )
                    ]
                  )
                left_token: <Left_Backtick "`">
                spids: [115 125]
              )
            }
          spids: [114]
        )
      ]
      spids: [114]
    )
    (C {(echo)} {(DQ ("password is '") ($ VSub_Name "$pw") ("'"))})
  ]
)