(List
  (Com {[LIT_CHARS set]} {[LIT_CHARS -e]}  )
  (Com {[LIT_CHARS cd]} {[DQ [ComSub (Com {[LIT_CHARS dirname]} {[DQ [VarSub BASH_SOURCE][LIT_CHARS "[0]"]]})][LIT_CHARS /..]]}  )
  (Com {[LIT_CHARS dart]} {[LIT_CHARS -c]} {[LIT_CHARS tool/patch_sdk.dart]} {[LIT_CHARS tool/input_sdk]} {[LIT_CHARS gen/patched_sdk]}  )
)