WHY

PS C:\Users\WHY> 'AB^CD^改成AB^CD00' -replace '(?<=^[^^]*\^[^^]*)\^', '00'
AB^CD00改成AB^CD00

WHY

其实纯批也可以，在连续的^字符之间加空格，最后面加补位字符

@echo off
set "folderName=AB^CD^^"
setlocal enabledelayedexpansion
for /f "tokens=1,2* delims=^" %%i in ("!folderName:^= ^!$") do (
    endlocal
    set "s1=%%i"
    set "s2=%%j"
    set "s3=%%k"
    setlocal enabledelayedexpansion
    set "s3=!s3: ^=^!"
    echo;ren "!folderName!" "!s1:~0,-1!^^!s2:~0,-1!00!s3:~0,-1!"
)
pause
复制代码

输出：ren "AB^CD^^" "AB^CD00^"