(command.CommandList children: [ (C {<set>} {<-eu>}) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:RUNFILES) op: assign_op.Equal rhs: { (braced_var_sub token: <Id.VSub_Name RUNFILES> suffix_op: (suffix_op.Unary tok: <Id.VTest_ColonHyphen ':-'> arg_word: {($ Id.VSub_Number '$0') <.runfiles> <Id.Lit_Slash '/'> <io_bazel>} ) ) } spids: [55] ) ] ) (C {<source>} {(DQ (${ Id.VSub_Name RUNFILES) <'/examples/shell/lib.sh'>)}) (C {<showfile>}) ] )