(command.CommandList children: [ (command.Case to_match: {($ Id.VSub_Pound '$#')} arms: [ (case_arm pat_list:[{<0>}] spids:[19 20 22 -1]) (case_arm pat_list: [{<1>}] action: [(C {<cd>} {(DQ ($ Id.VSub_Number '$1'))})] spids: [24 25 33 -1] ) (case_arm pat_list: [{<Id.Lit_Star '*'>}] action: [ (command.Sentence child: (command.Simple words: [{<echo>} {(DQ <'Usage: '> ($ Id.VSub_Number '$0') <' [top_srcdir]'>)}] redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})] ) terminator: <Id.Op_Semi _> ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<2>}) ] spids: [35 36 54 -1] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (C {<Id.Lit_LBracket '['>} {<-r>} {<.git/HEAD>} {<Id.Lit_RBracket ']'>}) terminator: <Id.Op_Semi _> ) ] action: [ (C { (braced_var_sub token: <Id.VSub_Name GIT> suffix_op: (suffix_op.Unary op_id:Id.VTest_ColonHyphen arg_word:{<git>}) ) } {<ls-files>} ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<0>}) ] spids: [59 70] ) ] ) (command.Simple words: [{<echo>} {(SQ <'Cannot list sources without some version control system in use.'>)}] redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})] ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] )