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回复 1# pengyou86

@echo off
for /f "delims=U" %%i in ('cmd /u /c echo 唉') do set "tab=%%i"
setlocal enabledelayedexpansion
(for /f "delims=" %%i in (处理前.txt) do (
    if defined str (
       echo,!str!%tab%%%i&set "str="
    ) else set "str=%%i"
)
    if defined str echo !str!
)>处理后.txt
pause
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