[文件操作] 批处理中if后echo变量出现空格

@echo off
del net_help.htm 2>nul
echo.
echo......请稍候，构造htm文件中.....
echo.>tmp.txt
setlocal ENABLEDELAYEDEXPANSION
for /f "tokens=1,2 delims=:" %%i in ('net help^|more +9^|findstr /n "."') do (
set n=%%j
if %%i gtr 0 (if %%i lss 10 (
echo !n:~3,22!>>tmp.txt
echo !n:~28,14!>>tmp.txt
echo !n:~50,14!>>tmp.txt
)
)
)
for /f "tokens=1,2,3 delims= " %%i in ('sort tmp.txt') do (
set x=%%i
set y=%%j
set z=%%k
if exist !z! (>>tmp1.txt echo %%i %%y) else (>>tmp1.txt echo %%I %%y %%z)
)
endlocal
>net_help.htm echo ^<head^>
>>net_help.htm echo ^<title^>Help for Net commands^</title^>
>>net_help.htm echo ^<meta http-equiv="Content-Type" content="text/html^; charset=gb2312" ^/^>
>>net_help.htm echo ^</head^>
>>net_help.htm echo ^<A NAME="Top"^>
>>net_help.htm echo ^<center^>
>>net_help.htm echo ^<h1^>Net 命令速查手册^</h1^>
>>net_help.htm echo Written by Hitme
>>net_help.htm echo ^</center^>
for /f "delims=" %%i in (tmp1.txt) do (
echo ^<a href="#%%i"^>%%i^</a^>^</br^>>>net_help.htm
)
for /f "delims=" %%i in (tmp1.txt) do (
>>net_help.htm echo ^<a name="%%i"^>
>>net_help.htm echo ^<h2^>%%i^</h2^>
>>net_help.htm echo ^<pre^> %%i /help|more /s>>net_help.htm
>>net_help.htm echo ^</pre^>
>>net_help.htm echo ^<a href="#top"^>返回页首^</a^>
)
start net_help.htm
del tmp*.txt
pause
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