批处理for的嵌套循环

xintiruan

先来看小弟的一段“呆马”：
@if not defined dbug echo off
set v=a;b;c;d;e
echo %v%>v.txt
for /l %%a in (1,1,5) do (
for /f "tokens=%%a delims=;" %%i in (v.txt) do echo %%i
）
运行结果：
%a delims=;" was unexpected at this time.
%a delims=;" was unexpected at this time.
%a delims=;" was unexpected at this time.
%a delims=;" was unexpected at this time.
%a delims=;" was unexpected at this time.

看来"tokens=%%a"是不支持for中嵌套的变量的，于是乎，我改为：

@if not defined dbug echo off
setlocal EnableDelayedExpansion
set i=0
set v=a;b;c;d;e
echo %v%>v.txt
for /l %%a in (1,1,5) do (
set i=%%a
echo !i!
for /f "tokens=%i% delims=;" %%i in (v.txt) do echo %%i
)
运行结果：
1
delims=;" was unexpected at this time.
2
delims=;" was unexpected at this time.
3
delims=;" was unexpected at this time.
4
delims=;" was unexpected at this time.
5
delims=;" was unexpected at this time.



还是不行啊，快来帮帮我吧，高手们！

xintiruan

3楼很强啊，我已经琢磨了几天了，谢!
不过，您好像没有加入判断推出，这个程序执行到最后一次的时候是for /f "tokens=空 delims=;" %%i in (v.txt) do echo %%i
所有我想把这个case结了，加了个判断语句，但是没有起到作用（就是判断%%a循环到最后一步，推出循环），让我们一起来完善这个case吧。
@if not defined dbug echo off
set v=a;b;c;d;e
echo %v%>v.txt
for /l %%a in (1,1,5) do call :aa %%a
:aa
for /f "tokens=%1 delims=;" %%i in (v.txt) do echo %%i
if "%1"=="5" goto :end
:end

xintiruan

大家可以试一下，7楼是对的，我的那个也错了，大家可以运行一下，我就不截图了，case closed,感谢大家！