cmd - 错误 "\.. was unexpected at this time"

Question

我用它创建了一个 .reg 以在我的上下文菜单中添加一个 Delete empty folders 命令。当我右键单击一个文件夹时，这应该会删除它的空子文件夹。

我的上下文菜单中有“删除空文件夹”，但是当我选择它时，一个 cmd 窗口打开，我收到这个错误:.. 此时是意外的。 知道为什么吗？

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Directory\shell\Delete empty folders]

[HKEY_CLASSES_ROOT\Directory\shell\Delete empty folders\Command]
@="cmd /c for /f \"usebackq delims=\" %%d in (`\"dir \"%1\" /ad/b/s | sort /R\"`) do rd \"%%d\""

代码来自@mmj ( here )

编辑:感谢 JosephZ 的帮助，这里是解决方案:

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Directory\shell\Delete empty folders]

[HKEY_CLASSES_ROOT\Directory\shell\Delete empty folders\Command]
@="cmd.exe /K for /f \"usebackq delims=\" %%d in (`\"dir \"%V\" /ad/b/s | sort /R\"`) do rd \"%%~d\""

Answer 1

我不明白为什么您的代码会失败。出于调试目的:下一个 .reg工作:

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Directory\shell\List all subfolders2]

[HKEY_CLASSES_ROOT\Directory\shell\List all subfolders2\command]
@="cmd.exe /K for /f \"usebackq delims=\" %%d in (`\"dir \"%V\" /ad/b/s | sort /R\"`) do @echo \"%%~d\""

对您的代码所做的更改:

• cmd.exe而不是 cmd ;
• /K切换以保持命令提示符窗口打开；
• %V而不是 %1但与 %1 一起工作还有；
• @echo而不是 rd因为我不想删除任何目录，即使它是空的(仅用于调试)；
• %%~d而不是 %%d .

另一种转义方式:

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Directory\shell\List all subfolders]

[HKEY_CLASSES_ROOT\Directory\shell\List all subfolders\command]
@="cmd.exe /S /K \"for /f \"delims=\" %%d in ('dir \"%V\" /ad/b/s ^| sort /R') do @echo \"%%~d\"\""

摘自cmd /? :

If /C or /K is specified, then the remainder of the command line after the switch is processed as a command line, where the following logic is used to process quote (") characters:

1. If all of the following conditions are met, then quote character on the command line are preserved:

   • no /S switch
   • exactly two quote characters
   • no special characters between the two quote characters, where special is one of: &<>()@^|
   • there are one or more whitespace characters between the two quote characters
   • the string between the two quote characters is the name of an executable file.

2. Otherwise, old behavior is to see if the first character is a quote character and if so, strip the leading character and remove the last quote character on the command line, preserving any text after the last quote character.

编辑:解决方案(OP Arone 一次又一次地建议):

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Directory\shell\Delete empty folders]

[HKEY_CLASSES_ROOT\Directory\shell\Delete empty folders\Command]
@="cmd.exe /K for /f \"usebackq delims=\" %%d in (`\"dir \"%V\" /ad/b/s | sort /R\"`) do rd \"%%~d\""