GNU bug report logs - #77589
30.1; On Windows, dired does not display Junctions specially

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Package: emacs;

Reported by: dino chiesa <dpchiesa <at> hotmail.com>

Date: Sun, 6 Apr 2025 23:23:01 UTC

Severity: wishlist

Found in version 30.1

Done: Eli Zaretskii <eliz <at> gnu.org>

Bug is archived. No further changes may be made.

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Message #11 received at 77589 <at> debbugs.gnu.org (full text, mbox):

From: dino chiesa <dpchiesa <at> hotmail.com>
To: "77589 <at> debbugs.gnu.org" <77589 <at> debbugs.gnu.org>
Subject: Re: More information
Date: Mon, 7 Apr 2025 00:16:18 +0000

This page discusses an approach to interrogating a file on Windows to determine if it is a Symlink or Junction: 

https://sourceware.org/pipermail/cygwin/2023-November/254786.html

	  HANDLE h = ...
          FILE_ATTRIBUTE_TAG_INFO at;
	  if (GetFileInformationByHandleEx (h, FileAttributeTagInfo,
					    &at, sizeof at))
	    {
	      if (at.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
	        {
		  /* Check at.ReparseTag:
		  IO_REPARSE_TAG_LX_SYMLINK: WSL symlink
		  IO_REPARSE_TAG_SYMLINK: Windows symlink
		  IO_REPARSE_TAG_MOUNT_POINT: Volume mount point
					      or directory junction
		  IO_REPARSE_TAG_APPEXECLINK: App execution alias
		  Anything else: *shrug*
		}
	    }
This bug report was last modified 25 days ago.

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