嵌套的for循环变量批次

Question

这里是我的代码

set list=test 
del /Q failed_tests.txt 
FOR %%a IN (%list%) DO (
    %%a > output_%%a.txt 

    FINDSTR /C:"[----------]" output_%%a.txt > check_run.txt 

    for /f "delims=" %%x in (check_run.txt) do (
     set content=%%x 
    ) 

    if not %content%=="[----------]" (
     echo Test Does Not Run >> failed_tests.txt 
    ) else (
     echo Test Runs >> failed_tests.txt 
    ) 
) 
type failed_tests.txt 

content似乎总是被设置为"[----------]"。但是，当output_test.txt/check_run.txt不包含"[----------]"它应该被设置为一个空字符串。

Answer 1

将@ JosefZ的建议纳入答案，所以这显示为回答。

SETLOCAL ENABLEDELAYEDEXPANSION 
set list=test 
del /Q failed_tests.txt 
FOR %%a IN (%list%) DO (
    %%a > output_%%a.txt 

    FINDSTR /C:"[----------]" output_%%a.txt > check_run.txt 

    set "content=" 
    for /f "delims=" %%x in (check_run.txt) do (
     set "content=%%x" 
    ) 

    if not "!content!"=="[----------]" (
     echo Test Does Not Run >> failed_tests.txt 
    ) else (
     echo Test Runs >> failed_tests.txt 
    ) 
) 
type failed_tests.txt 

编辑：保留谨慎的双引号按评论。