[文本处理] 求助BAT脚本数据处理问题

@echo off&setlocal enabledelayedexpansion
set "lang=ja-jp,en-us,zh-cn"
set "lang1=,ja-jp,en-us,zh-cn,"
set "lang2=,ja-jp,zh-cn,"
set "lang3=,zh-cn,en-us,"
for %%a in (%lang%) do  (
     for /l  %%i in (1,1,3) do (
          if "!lang%%i!" neq "!lang%%i:,%%a,=!" (
              echo %%a fnc%%i
          )
     )
)
pause
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@echo off
set "Input=ja-jp,zh-cn"
for %%i in (%Input%) do (
    echo --- Checking %%i
    call :CheckRule %%i
)
pause
goto :eof

:CheckRule
set "Rule1=ja-jp,en-us,zh-cn"
set "Rule2=ja-jp,zh-cn"
set "Rule3=zh-cn,en-us"

echo %Rule1% | findstr /i "%1" >nul
if errorlevel 1 (
    echo %Rule1% : Not match
) else (
    echo %Rule1% : Install
)

echo %Rule2% | findstr /i "%1" >nul
if errorlevel 1 (
    echo %Rule2% : Not match
) else (
    echo %Rule2% : Install
)

echo %Rule3% | findstr /i "%1" >nul
if errorlevel 1 (
    echo %Rule3% : Not match
) else (
    echo %Rule3% : Install
)
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@echo off
set "Input=ja-jp,zh-cn"
for %%i in (%Input%) do (
    echo --- Checking %%i
    call :CheckRule %%i
)
pause
goto :installDriver
 
:CheckRule
set "Rule1=ja-jp,en-us,zh-cn"
set "Rule2=ja-jp,zh-cn"
set "Rule3=zh-cn,en-us"
 
echo %Rule1% | findstr /i "%1" >nul
if errorlevel 1 (
    echo %Rule1% : Not match
) else (
    echo %Rule1% : Install
)
 
echo %Rule2% | findstr /i "%1" >nul
if errorlevel 1 (
    echo %Rule2% : Not match
) else (
    echo %Rule2% : Install
)
 
echo %Rule3% | findstr /i "%1" >nul
if errorlevel 1 (
    echo %Rule3% : Not match
) else (
    echo %Rule3% : Install
)

:installDriver
echo :InstallDriver for lang
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