(CommandList
  children: [
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: (DBracket expr:(BoolUnary op_id:BoolUnary_z child:{(DQ ($ VSub_Name '$EQUIVS'))}))
              terminator: <Op_Semi ';'>
            )
          ]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:EQUIVS)
                  op: Equal
                  rhs: 
                    {
                      (CommandSubPart
                        command_list: 
                          (CommandList
                            children: [
                              (C {(readlink)} {(-f)} 
                                {
                                  (CommandSubPart
                                    command_list: 
                                      (CommandList
                                        children: [(C {(dirname)} {($ VSub_Number '$0')})]
                                      )
                                    left_token: <Left_Backtick '`'>
                                    spids: [27 31]
                                  ) (/../frontend/c/base-type-equivs.txt)
                                }
                              )
                            ]
                          )
                        left_token: <Left_CommandSub '$('>
                        spids: [21 34]
                      )
                    }
                  spids: [20]
                )
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              spids: [20]
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            (If
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                (if_arm
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                    (Sentence
                      child: 
                        (DBracket
                          expr: (BoolUnary op_id:BoolUnary_z child:{(DQ ($ VSub_Name '$EQUIVS'))})
                        )
                      terminator: <Op_Semi ';'>
                    )
                  ]
                  action: [
                    (SimpleCommand
                      words: [{(echo)} {(DQ ('Error: no equivs file'))}]
                      redirects: [(Redir op_id:Redir_GreatAnd fd:1 arg_word:{(2)} spids:[59])]
                    )
                  ]
                  spids: [16777215 50]
                )
              ]
              spids: [16777215 63]
            )
          ]
          spids: [16777215 17]
        )
      ]
      spids: [16777215 65]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:uniqtypes)
          op: Equal
          rhs: 
            {
              (DQ 
                (CommandSubPart
                  command_list: 
                    (CommandList
                      children: [
                        (Pipeline
                          children: [
                            (C {(tr)} {(-s)} {(SQ <'[:blank:]'>)} {(SQ <'\\t'>)})
                            (C {(cut)} {(-f1)})
                            (C {(grep)} {(SQ <'^__uniqtype_'>)})
                          ]
                          negated: False
                        )
                      ]
                    )
                  left_token: <Left_CommandSub '$('>
                  spids: [73 101]
                )
              )
            }
          spids: [71]
        )
      ]
      spids: [71]
    )
    (While
      cond: [(Sentence child:(C {(read)} {(equivclass)}) terminator:<Op_Semi ';'>)]
      body: 
        (DoGroup
          children: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:big_regexp)
                  op: Equal
                  rhs: 
                    {(SQ <'^__uniqtype_([0-9a-f]{7,8})?_('>) 
                      (DQ 
                        (CommandSubPart
                          command_list: 
                            (CommandList
                              children: [
                                (Pipeline
                                  children: [
                                    (C {(echo)} {(DQ ($ VSub_Name '$equivclass'))})
                                    (C {(sed)} {(SQ <'s/, */|/g'>)})
                                    (C {(tr)} {(SQ <' '>)} {(SQ <_>)})
                                  ]
                                  negated: False
                                )
                              ]
                            )
                          left_token: <Left_CommandSub '$('>
                          spids: [130 158]
                        )
                      ) (SQ <')$'>)
                    }
                  spids: [125]
                )
              ]
              spids: [125]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:matches)
                  op: Equal
                  rhs: 
                    {
                      (DQ 
                        (CommandSubPart
                          command_list: 
                            (CommandList
                              children: [
                                (Pipeline
                                  children: [
                                    (C {(echo)} {(DQ ($ VSub_Name '$uniqtypes'))})
                                    (C {(egrep)} {(DQ ($ VSub_Name '$big_regexp'))})
                                  ]
                                  negated: False
                                )
                              ]
                            )
                          left_token: <Left_CommandSub '$('>
                          spids: [167 183]
                        )
                      )
                    }
                  spids: [165]
                )
              ]
              spids: [165]
            )
            (If
              arms: [
                (if_arm
                  cond: [
                    (Sentence
                      child: 
                        (DBracket
                          expr: 
                            (BoolBinary
                              op_id: BoolBinary_gt
                              left: 
                                {
                                  (CommandSubPart
                                    command_list: 
                                      (CommandList
                                        children: [
                                          (Pipeline
                                            children: [
                                              (C {(echo)} {(DQ ($ VSub_Name '$matches'))})
                                              (C {(grep)} {(SQ <'^__uniqtype_[0-9a-f]{7,8}_'>)})
                                              (C {(wc)} {(-l)})
                                            ]
                                            negated: False
                                          )
                                        ]
                                      )
                                    left_token: <Left_CommandSub '$('>
                                    spids: [199 221]
                                  )
                                }
                              right: {(1)}
                            )
                        )
                      terminator: <Op_Semi ';'>
                    )
                  ]
                  action: [
                    (SimpleCommand
                      words: [
                        {(echo)}
                        {
                          (DQ ('Error: expected at most one matching uniqtype for ') 
                            (${ VSub_Name big_regexp) ('; got ')
                          )
                        }
                        {($ VSub_Name '$matches')}
                      ]
                      redirects: [(Redir op_id:Redir_GreatAnd fd:1 arg_word:{(2)} spids:[245])]
                    )
                    (C {(exit)} {(1)})
                  ]
                  spids: [16777215 230]
                )
              ]
              spids: [16777215 282]
            )
            (Pipeline
              children: [
                (C {(echo)} {(DQ ($ VSub_Name '$matches'))})
                (C {(sed)} {(SQ <'/^$/ d'>)})
                (While
                  cond: [(Sentence child:(C {(read)} {(matching_typesym)}) terminator:<Op_Semi ';'>)]
                  body: 
                    (DoGroup
                      children: [
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:matching_type)
                              op: Equal
                              rhs: 
                                {
                                  (DQ 
                                    (CommandSubPart
                                      command_list: 
                                        (CommandList
                                          children: [
                                            (Pipeline
                                              children: [
                                                (C {(echo)} {(DQ ($ VSub_Name '$matching_typesym'))})
                                                (C {(sed)} {(-r)} 
                                                  {(SQ <'s/^__uniqtype_([0-9a-f]{7,8})?_//'>)}
                                                )
                                              ]
                                              negated: False
                                            )
                                          ]
                                        )
                                      left_token: <Left_CommandSub '$('>
                                      spids: [321 339]
                                    )
                                  )
                                }
                              spids: [319]
                            )
                          ]
                          spids: [319]
                        )
                        (Pipeline
                          children: [
                            (C {(echo)} {(DQ ($ VSub_Name '$equivclass'))})
                            (C {(sed)} {(SQ <'s/, */\\n/g'>)})
                            (C {(tr)} {(SQ <' '>)} {(SQ <_>)})
                            (C {(grep)} {(-v)} {(DQ ('^') (${ VSub_Name matching_type)) (SQ <'$'>)})
                            (While
                              cond: [(Sentence child:(C {(read)} {(equiv)}) terminator:<Op_Semi ';'>)]
                              body: 
                                (DoGroup
                                  children: [
                                    (Assignment
                                      keyword: Assign_None
                                      pairs: [
                                        (assign_pair
                                          lhs: (LhsName name:synonym_typesym)
                                          op: Equal
                                          rhs: 
                                            {
                                              (DQ 
                                                (CommandSubPart
                                                  command_list: 
                                                    (CommandList
                                                      children: [
                                                        (Pipeline
                                                          children: [
                                                            (C {(echo)} 
                                                              {
                                                                (DQ ($ VSub_Name '$matching_typesym'))
                                                              }
                                                            )
                                                            (C {(sed)} {(-r)} 
                                                              {
                                                                (DQ 
                                                                  (
's/^(__uniqtype_([0-9a-f]{7,8})?_).*/'
                                                                  ) (Lit_Other '\\') (1) (${ VSub_Name equiv) (/)
                                                                )
                                                              }
                                                            )
                                                          ]
                                                          negated: False
                                                        )
                                                      ]
                                                    )
                                                  left_token: <Left_CommandSub '$('>
                                                  spids: [399 423]
                                                )
                                              )
                                            }
                                          spids: [397]
                                        )
                                      ]
                                      spids: [397]
                                    )
                                    (C {(echo)} 
                                      {(-Wl) (Lit_Comma ',') (--defsym) (Lit_Comma ',') 
                                        (${ VSub_Name synonym_typesym) (Lit_Other '=') (${ VSub_Name matching_typesym)
                                      }
                                    )
                                  ]
                                  spids: [394 443]
                                )
                            )
                          ]
                          negated: False
                        )
                      ]
                      spids: [308 446]
                    )
                )
              ]
              negated: False
            )
          ]
          spids: [118 448]
        )
      redirects: [
        (Redir
          op_id: Redir_Less
          fd: 16777215
          arg_word: {(DQ ($ VSub_Name '$EQUIVS'))}
          spids: [450]
        )
      ]
    )
  ]
)