3 ms·

The cursedness of "€:\" is awesome. It's amazing how much more flexible the NT kernel is vs what's exposed to the user.

jeffbee 11mo ago
Yeah only the DOS façade of Windows NT is well known. Under that skin lurks some pretty wild late-1980s concepts. One of the core things to understand is that a lot of the features are based on a reverse map of GUIDs to various actions, and resolution of these map entries pervades the UI. That's why you can put {hexspew} as the name of a shortcut on the Windows desktop and have it magically become a deep link to some feature that Windows doesn't otherwise let you create a shortcut to, and also why you can just add things to the control panel which doesn't seem like it would be an intentional feature. And these actions can be named symbols inside DLLs, so they can do literally anything the OS is capable of doing. This is also why Windows has always been ground zero for malware.
- pixl97 11mo ago
  >so they can do literally anything the OS is capable of doing Yea, over the years someone thought of something they wanted to do and then did it without a systematic consideration of what that level of power meant, especially as multi-user network connectivity and untrusted data became the norm.
  - p_ing 11mo ago
    Those weren't a consideration when the NT OS/2 Design Workbook was being written.
- sedatk 11mo ago
  Those GUIDs aren't related to NT kernel but Windows Explorer and its COM-based component system. They were introduced with Windows 95, IIRC.
- Wonkey 11mo ago
  That sounds fun. Do you have a link or and example “hexspew”
  - bialpio 11mo ago
    God mode shortcut: https://en.wikipedia.org/wiki/Windows_Master_Control_Panel_shortcut https://en.wikipedia.org/wiki/Windows_Master_Control_Panel_s...
  - deleted 11mo ago
    [deleted]
  - deleted 11mo ago
    [deleted]
Dwedit 11mo ago
Very cursed, and the drive letter won't even be accessible under certain codepages.
- jeroenhd 11mo ago
  As far as I can tell, the drive will still be accessible, it'll just require the character equivalent to € on the other code page as a drive letter. As long as your code page doesn't have gaps, that should be doable. It'll definitely confuse the hell out of anyone who doesn't know about this setup, though!
  - Dwedit 11mo ago
    I don't think it works that way, the actual drive letter is a UTF-16 Unicode path. The application must be able to provide an "ANSI" string that encodes to that UTF-16 value if it uses an "ANSI" function to open the file. It's not like 8-bit systems where they just want the same 8-bit value.
moffkalast 11mo ago
It's not flexible enough until we can have a joy face emoji as the drive letter.
- nolok 11mo ago
  I'm pretty sure the kernel would be ok with that, from it's point of view joy face emoji or korean jamo or japanese kenji are all the same Explorer, not so much ...

Yeah only the DOS façade of Windows NT is well known. Under that skin lurks some pretty wild late-1980s concepts. One of the core things to understand is that a lot of the features are based on a reverse map of GUIDs to various actions, and resolution of these map entries pervades the UI. That's why you can put {hexspew} as the name of a shortcut on the Windows desktop and have it magically become a deep link to some feature that Windows doesn't otherwise let you create a shortcut to, and also why you can just add things to the control panel which doesn't seem like it would be an intentional feature. And these actions can be named symbols inside DLLs, so they can do literally anything the OS is capable of doing. This is also why Windows has always been ground zero for malware.

pixl97 11mo ago
>so they can do literally anything the OS is capable of doing Yea, over the years someone thought of something they wanted to do and then did it without a systematic consideration of what that level of power meant, especially as multi-user network connectivity and untrusted data became the norm.
- p_ing 11mo ago
  Those weren't a consideration when the NT OS/2 Design Workbook was being written.
sedatk 11mo ago
Those GUIDs aren't related to NT kernel but Windows Explorer and its COM-based component system. They were introduced with Windows 95, IIRC.
Wonkey 11mo ago
That sounds fun. Do you have a link or and example “hexspew”
- bialpio 11mo ago
  God mode shortcut: https://en.wikipedia.org/wiki/Windows_Master_Control_Panel_shortcut https://en.wikipedia.org/wiki/Windows_Master_Control_Panel_s...
- deleted 11mo ago
  [deleted]
- deleted 11mo ago
  [deleted]

Dwedit 11mo ago

Very cursed, and the drive letter won't even be accessible under certain codepages.

jeroenhd 11mo ago
As far as I can tell, the drive will still be accessible, it'll just require the character equivalent to € on the other code page as a drive letter. As long as your code page doesn't have gaps, that should be doable. It'll definitely confuse the hell out of anyone who doesn't know about this setup, though!
- Dwedit 11mo ago
  I don't think it works that way, the actual drive letter is a UTF-16 Unicode path. The application must be able to provide an "ANSI" string that encodes to that UTF-16 value if it uses an "ANSI" function to open the file. It's not like 8-bit systems where they just want the same 8-bit value.

moffkalast 11mo ago

It's not flexible enough until we can have a joy face emoji as the drive letter.

nolok 11mo ago
I'm pretty sure the kernel would be ok with that, from it's point of view joy face emoji or korean jamo or japanese kenji are all the same Explorer, not so much ...