批处理文件：在for循环中追加一个字符串

Question

我有以下for循环：

for /l %%a in (1,1,%count%) do (
<nul set /p=" %%a - "

Echo !var%%a!
)

将显示如下内容：

1 - REL1206
2 - REL1302
3 - REL1306

我需要创建一个根据迭代次数追加自身的变量。示例变量在for循环后看起来像这样：

myVar="1, 2, 3"

Answer 1

示例：

@ECHO OFF &SETLOCAL
SET /a count=5
for /l %%a in (1,1,%count%) do call set "Myvar=%%Myvar%%, %%a"
ECHO %Myvar:~2%

..输出是：

1, 2, 3, 4, 5

Answer 2

使用延迟扩展

setlocal enableextensions enabledelayedexpansion
SET OUTPUTSTRING=
for /l %%a in (1,1,%count%) do (
<nul set /p=" %%a - "
Echo !var%%a! 
if .!OUTPUTSTRING!==. (
    SET OUTPUTSTRING=%%a
) ELSE (
    SET OUTPUTSTRING=!OUTPUTSTRING!, %%a
)
)
SET OUTPUTSTRING