Re: (expand-file-name "/..")
Mats Lidell writes:
>>>>> Stephen J Turnbull <stephen(a)xemacs.org>
writes:
> file-truename actually follows the path on the device.
I'm confused (and possibly stupid!). (file-truename "/foo/bar/..")
gives "/foo" on my system (XEmacs 21.5). I have no "/foo" directory
on this machine. So what does "actually follow the path on the
device" mean?
I'm not sure why this makes sense, but file-truename does
expand-file-name (or the equivalent in C) first. Then it eliminates
symlinks. So
/foo/bar/..
-> /foo # expand-file-name
-> / + foo # / exists and has realpath "/", foo does not exist
-> /foo # appends remaining components
or something like that (I don't have time to look at the code, but
it's pretty hairy IIRC).
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