(command.CommandList children: [ (command.ShFunction name: is-shell body: (command.BraceGroup children: [ (C {(local)} {(Lit_VarLike 'path=') ($ VSub_Number '$1')}) (C {(local)} {(shebang)}) (command.Simple words: [{(read)} {(shebang)}] redirects: [ (redir.Redir op: <Redir_Less '<'> fd: 16777215 arg_word: {($ VSub_DollarName '$path')} ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:shebang) op: Equal rhs: { (braced_var_sub token: <VSub_Name shebang> suffix_op: (suffix_op.PatSub pat:{(' ')} replace:{} replace_mode:Lit_Slash) ) } ) ] ) (command.DBracket expr: (bool_expr.Binary op_id: BoolBinary_GlobDEqual left: {($ VSub_DollarName '$shebang')} right: {(Lit_Other '*') (sh)} ) ) ] ) ) (command.ShFunction name: unittest body: (command.BraceGroup children: [ (command.ForEach iter_name: file iter_words: [{(bin/oil.py)} {(configure)} {(install)}] do_arg_iter: F body: (command.DoGroup children: [ (command.If arms: [ (if_arm cond: [ (command.Sentence child: (C {(is-shell)} {($ VSub_DollarName '$file')}) terminator: <Op_Semi ';'> ) ] action: [(C {(echo)} {(YES)} {($ VSub_DollarName '$file')})] ) ] else_action: [(C {(echo)} {(NO)} {($ VSub_DollarName '$file')})] ) ] ) ) ] ) ) (C {(DQ ($ VSub_At '$@'))}) ] )