Re: (expand-file-name "/..")

"Stephen J. Turnbull" <stephen(a)xemacs.org&gt; writes: I don't think the “superroot” in the comment refers to Windows, else it would have been mentioned somehow. As a matter of fact, looking over the fence revealed a bit more information[1]: /* `/../' is the "superroot" on certain file systems. Turned off on DOS_NT systems because they have no "superroot" and because this causes us to produce file names like "d:/../foo" which fail file-related functions of the underlying OS. (To reproduce, try a long series of "../../" in default_directory, longer than the number of levels from the root.) */ This is bothering me from a functionality perspective. Someone makes a vague reference to file systems that may exist effectively as subdirectories of a superroot, without giving a concrete example and without stating why that superroot in turn couldn't be part of a supersuperroot and so on. (I don't actually care, just curious) That wouldn't help in my case I am afraid, but is generally a good idea. In any case I'd neither change the function nor add a new one for this one reason. We should just document that path names that may take you outside of root are generally dangerous with this function and perhaps refer them to #'file-truename to see if that gives better results. Footnotes: [1] http://git.savannah.gnu.org/cgit/emacs.git/tree/src/fileio.c _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://lists.xemacs.org/mailman/listinfo/xemacs-beta