qixiaobin0715

@echo off
setlocal enabledelayedexpansion
set var1=AAAA
set var2=BBBB
for /f "delims=" %%a in (test.txt) do (
    if "%%a"=="%var2%" (
        set n=
        echo,!str!
        set str=
    )
    if not defined n echo,%%a
    if !n!==true set str=!str!%%a
    if "%%a"=="%var1%" set n=true
)
pause
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