(List
  (For os [{[LIT_CHARS linux]}, {[LIT_CHARS linux-noasm]}, {[LIT_CHARS mac]}, {[LIT_CHARS win]}, {[LIT_CHARS win-vs2013]}])
    (For target [{[LIT_CHARS Chromium]}, {[LIT_CHARS ChromiumOS]}, {[LIT_CHARS Chrome]}, {[LIT_CHARS ChromeOS]}])
      (For arch [{[LIT_CHARS arm]}, {[LIT_CHARS arm-neon]}, {[LIT_CHARS arm64]}, {[LIT_CHARS ia32]}, {[LIT_CHARS x64]}, {[LIT_CHARS mipsel]}])
        (List
          (AndOr OP_AND_IF
            (Com {[LIT_OTHER "["]} {[LIT_OTHER "!"]} {[LIT_CHARS -e]} {[DQ [LIT_CHARS build.][VarSub arch][LIT_CHARS .][VarSub os][LIT_CHARS /][VarSub target][LIT_CHARS /config.h]]} {[LIT_OTHER "]"]})
            (Com {[LIT_CHARS continue]})
          )
          (For f [{[LIT_CHARS config.h]}, {[LIT_CHARS config.asm]}, {[LIT_CHARS libavutil/avconfig.h]}])
            (List
              (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('FROM', {[DQ [LIT_CHARS build.][VarSub arch][LIT_CHARS .][VarSub os][LIT_CHARS /][VarSub target][LIT_CHARS /][VarSub f]]})])
              (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TO', {[DQ [LIT_CHARS chromium/config/][VarSub target][LIT_CHARS /][VarSub os][LIT_CHARS /][VarSub arch][LIT_CHARS /][VarSub f]]})])
              (If
                (Com {[LIT_OTHER "["]} {[DQ [ComSub (Com {[LIT_CHARS dirname]} {[VarSub f]})]]} {[LIT_OTHER "!"] [LIT_OTHER "="]} {[DQ ]} {[LIT_OTHER "]"]})
                (Com {[LIT_CHARS mkdir]} {[LIT_CHARS -p]} {[ComSub (Com {[LIT_CHARS dirname]} {[VarSub TO]})]})
              )
              (AndOr OP_AND_IF
                (Com {[LIT_OTHER "["]} {[LIT_CHARS -e]} {[VarSub FROM]} {[LIT_OTHER "]"]})
                (Com {[LIT_CHARS cp]} {[LIT_CHARS -v]} {[VarSub FROM]} {[VarSub TO]})
              )
            )
          )
        )
      )
    )
  )
  (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Copied all existing newer configs successfully."]]})
)