(command.Pipeline
  children: [
    (BraceGroup
      left: <Id.Lit_LBrace '{'>
      children: [
        (command.Simple
          words: [{<cat>}]
          redirects: [
            (redir
              op: <Id.Redir_DLess '<<'>
              loc: (redir_loc.Fd fd:0)
              arg: 
                (redir_param.HereDoc
                  here_begin: {(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\E'> ch:E) <OF>}
                  here_end_span_id: 15
                  stdin_parts: [<'sayIt:\n'> <'\t$(foreach b,$(BUILT_INS),echo XXX $(b:$X=) YYY;)\n'>]
                )
            )
          ]
          more_env: []
          do_fork: T
        )
        (C {<cat>} {<Makefile>})
      ]
      redirects: []
      right: <Id.Lit_RBrace '}'>
    )
    (command.Simple
      words: [{<make>} {<-f>} {<->} {<sayIt>}]
      redirects: [(redir op:<Id.Redir_Great '2>'> loc:(redir_loc.Fd fd:2) arg:{<'/dev/null'>})]
      more_env: []
      do_fork: T
    )
    (C {<sed>} {<-n>} {<-e>} {(SQ <'s/.*XXX \\(.*\\) YYY.*/\\1/p'>)})
    (C {<sort>})
    (BraceGroup
      left: <Id.Lit_LBrace '{'>
      children: [
        (command.ShAssignment
          pairs: [
            (assign_pair
              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'bad='> name:bad)
              op: assign_op.Equal
              rhs: {<0>}
              spids: [57]
            )
          ]
          redirects: []
        )
        (command.WhileUntil
          keyword: <Id.KW_While while>
          cond: (condition.Shell commands:[(C {<read>} {<builtin>})])
          body: 
            (command.DoGroup
              children: [
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'base='> name:base)
                      op: assign_op.Equal
                      rhs: 
                        {
                          (command_sub
                            left_token: <Id.Left_DollarParen '$('>
                            child: 
                              (C {<expr>} {(DQ ($ Id.VSub_DollarName builtin))} {<Id.Lit_Colon ':'>} 
                                {(SQ <'git-\\(.*\\)'>)}
                              )
                            right: <Id.Eof_RParen _>
                          )
                        }
                      spids: [71]
                    )
                  ]
                  redirects: []
                )
                (command.ShAssignment
                  pairs: [
                    (assign_pair
                      lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'x='> name:x)
                      op: assign_op.Equal
                      rhs: 
                        {
                          (command_sub
                            left_token: <Id.Left_DollarParen '$('>
                            child: 
                              (C {<sed>} {<-ne>} 
                                {(SQ <'s/.*{ "'>) ($ Id.VSub_DollarName base) 
                                  (SQ <'", \\(cmd_[^, ]*\\).*/'>) ($ Id.VSub_DollarName base) (SQ <'\t\\1/p'>)
                                } {<git.c>}
                              )
                            right: <Id.Eof_RParen _>
                          )
                        }
                      spids: [87]
                    )
                  ]
                  redirects: []
                )
                (command.If
                  arms: [
                    (if_arm
                      cond: 
                        (condition.Shell
                          commands: [(C {<test>} {<-z>} {(DQ ($ Id.VSub_DollarName x))})]
                        )
                      action: [
                        (C {<echo>} 
                          {
                            (DQ ($ Id.VSub_DollarName base) 
                              <' is builtin but not listed in git.c command list'>
                            )
                          }
                        )
                        (command.ShAssignment
                          pairs: [
                            (assign_pair
                              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'bad='> name:bad)
                              op: assign_op.Equal
                              rhs: {<1>}
                              spids: [131]
                            )
                          ]
                          redirects: []
                        )
                      ]
                      spids: [109 120]
                    )
                  ]
                  else_action: []
                  redirects: []
                )
                (command.ForEach
                  iter_names: [sfx]
                  iterable: (for_iter.Words words:[{<sh>} {<perl>} {<py>}])
                  body: 
                    (command.DoGroup
                      children: [
                        (command.If
                          arms: [
                            (if_arm
                              cond: 
                                (condition.Shell
                                  commands: [
                                    (C {<test>} {<-f>} 
                                      {
                                        (DQ ($ Id.VSub_DollarName builtin) <.> 
                                          ($ Id.VSub_DollarName sfx)
                                        )
                                      }
                                    )
                                  ]
                                )
                              action: [
                                (C {<echo>} 
                                  {
                                    (DQ ($ Id.VSub_DollarName base) <' is builtin but '> 
                                      ($ Id.VSub_DollarName builtin) <.> ($ Id.VSub_DollarName sfx) <' still exists'>
                                    )
                                  }
                                )
                                (command.ShAssignment
                                  pairs: [
                                    (assign_pair
                                      lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'bad='> name:bad)
                                      op: assign_op.Equal
                                      rhs: {<1>}
                                      spids: [182]
                                    )
                                  ]
                                  redirects: []
                                )
                              ]
                              spids: [154 167]
                            )
                          ]
                          else_action: []
                          redirects: []
                        )
                      ]
                    )
                  redirects: []
                )
              ]
            )
          redirects: []
        )
        (command.ControlFlow
          token: <Id.ControlFlow_Exit exit>
          arg_word: {($ Id.VSub_DollarName bad)}
        )
      ]
      redirects: []
      right: <Id.Lit_RBrace '}'>
    )
  ]
  negated: F
  stderr_indices: []
)