everest79

@echo off
for /f "delims=" %%a in (1.txt) do (
for %%b in (%%a) do call :xxx "%%b"
call :yyy
)
for /f "tokens=2,3 delims=_=" %%i in ('set l_^|sort /+4') do set msg=最长的行为:%%i  长度为:%%j
echo %msg%
pause
goto :eof


:xxx
set "lines=%lines%%~1"
goto :eof

:yyy
set /a x+=1
for /f "skip=1 delims=:" %%i in ('^(echo "%lines%"^&echo.^)^|findstr /o ".*"') do set/a l_%x%=%%i-5
set lines=
goto :eof
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