yhcfsr

@echo off
cd.>output.txt
for /f "delims=" %%i in ('findstr /n .* test.txt') do (
        set "var=%%i"
        setlocal enabledelayedexpansion
        set var=!var:*:=!
	set "var=!var:\r\n=$!"
	set "var=!var:\n=$!"
	:lp
	set "str=!var:~0,1!"
	set "var=!var:~1!"
	if "!str!"=="$" (echo.>>output.txt) else ( 
        set /p <nul ="!str!">>output.txt)
	if "!var!" NEQ "" goto :lp
        endlocal
)
pause
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测试结果：

yhcfsr

回复 3# 1332019995


    更新版：

@echo off&setlocal enabledelayedexpansion
cd.>temp.txt
for /f "delims=" %%a in ('type test.txt') do (
	set /a num+=1
	set "str=%%a"
	set "str=!str:\r=!"
	set "str=!str:\n=	!"	
	call :lp %%str%%
) 
goto :eof

:lp
	set var=%*
	:lp1
	for /f "tokens=1 delims=	" %%i in ("!var!") do ( 
	echo %%i>>temp.txt
	set "var=!var:%%i=	!"
	if !var!. NEQ . (goto :lp1) 
	)
goto :eof
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测试不会忽略空格，抛弃之前的思路，这个更清晰简单，处理速度比之前快了很多，至少你提供的样本是秒输入。