PowerShell:打破嵌套循环

Question

breakPowerShell中应该有一个命令可以通过分配标签来退出嵌套循环.只是它不起作用.这是我的代码:

$timestampServers = @(
    "http://timestamp.verisign.com/scripts/timstamp.dll",
    "http://timestamp.comodoca.com/authenticode",
    "http://timestamp.globalsign.com/scripts/timstamp.dll",
    "http://www.startssl.com/timestamp"
)

:outer for ($retry = 2; $retry -gt 0; $retry--)
{
    Write-Host retry $retry
    foreach ($timestampServer in $timestampServers)
    {
        Write-Host timestampServer $timestampServer
        & $signtoolBin sign /f $keyFile /p "$password" /t $timestampServer $file
        if ($?)
        {
            Write-Host OK
            break :outer
        }
    }
}
if ($retry -eq 0)
{
    WaitError "Digitally signing failed"
    exit 1
}

它打印以下内容:

retry 2
timestampServer http://timestamp.verisign.com/scripts/timstamp.dll
Done Adding Additional Store
Successfully signed and timestamped: C:\myfile.dll
OK
retry 1
timestampServer http://timestamp.verisign.com/scripts/timstamp.dll
Done Adding Additional Store
Successfully signed and timestamped: C:\myfile.dll
OK

ERROR: Digitally signing failed

我做错了什么？

我可以带goto和标签吗？

使用Windows 7,我猜PS 2.0.该脚本应该至少在PS 2上运行.

Answer 1

使用break循环标签时不添加冒号.这一行:

break :outer

应该这样写:

break outer

有关进一步演示,请考虑以下简单脚本:

:loop while ($true)
{
    while ($true)
    {
        break :loop
    }
}

执行时,它将永远运行而不会中断.但是这个脚本:

:loop while ($true)
{
    while ($true)
    {
        break loop
    }
}

应该退出,因为我改变break :loop了break loop.