(command.CommandList children: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:DIR) op: assign_op.Equal rhs: { (DQ (command_sub left_token: <Id.Left_DollarParen '$('> command_list: (command.CommandList children: [ (command.AndOr ops: [Id.Op_DAmp] children: [ (C {<cd>} { (DQ (command_sub left_token: <Id.Left_DollarParen '$('> command_list: (command.CommandList children: [ (C {<dirname>} { (DQ (braced_var_sub token: <Id.VSub_Name BASH_SOURCE> bracket_op: (bracket_op.ArrayIndex expr: (arith_expr.ArithWord w: {<Id.Lit_Digits 0>} ) ) ) ) } ) ] ) ) ) } ) (C {<pwd>}) ] ) ] ) ) ) } spids: [4] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:REFMT) op: assign_op.Equal rhs: {(DQ )} spids: [35] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DBracket expr: (bool_expr.Unary op_id: Id.BoolUnary_f child: {($ Id.VSub_DollarName '$DIR') </refmt_impl.native>} ) ) terminator: <Id.Op_Semi _> ) ] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:REFMT) op: assign_op.Equal rhs: {(DQ ($ Id.VSub_DollarName '$DIR') </refmt_impl.native>)} spids: [55] ) ] ) ] spids: [40 52] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DBracket expr: (bool_expr.Unary op_id: Id.BoolUnary_f child: {($ Id.VSub_DollarName '$DIR') </refmt>} ) ) terminator: <Id.Op_Semi _> ) ] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:REFMT) op: assign_op.Equal rhs: {(DQ ($ Id.VSub_DollarName '$DIR') </refmt>)} spids: [79] ) ] ) ] spids: [64 76] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.DBracket expr: (bool_expr.Unary op_id:Id.BoolUnary_z child:{($ Id.VSub_DollarName '$REFMT')}) ) terminator: <Id.Op_Semi _> ) ] action: [ (command.Simple words: [{<echo>} {(DQ <"Couldn't find refmt">)}] redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})] ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] spids: [88 99] ) ] ) (C {($ Id.VSub_DollarName '$REFMT')} {($ Id.VSub_At '$@')} {<-recoverable>} {<true>} {<-parse>} {<re>}) ] )