[文本处理] 批处理for语句嵌套使用应该注意些什么？

echo off&setlocal enabledelayedexpansion
::所有判断条件都存放在test.txt文件中
for /f  "delims=" %%a in (test.txt) do (
set var=%%a
set /a count=0
::target.txt是被提取的文本，
findstr /n "[" target.txt>>num.txt
for /f "tokens=1-2 delims=[]" %%a in (num.txt) do (
    set /a count+=1
    if "%%b"=="!var!" set /a cal=0, skip=count,num=%%a 2>nul
)
for /f "skip=%skip% delims=" %%a in (num.txt) do set /a num2=%%a 2>nul
for /f "skip=%num% delims=" %%i in (target.txt) do (
    echo %%i>>result.txt&set /a cal+=1,comp=cal+num+1
    if !comp! equ !num2! echo 您要的内容已成功提取!&goto end
)
)
:end
pause>nul
复制代码