[Openmcl-devel] user-homedir-pathname not a constant?

Daniel Herring dherring at tentpost.com
Sat Oct 9 21:52:19 UTC 2010


FYI, there's a thread by the same name on comp.lang.lisp.

On 10/08/2010 11:58 AM, Pascal J. Bourguignon wrote:
> Andrew Philpot<philpot at isi.edu>  writes:
>
>> dixiechicks.isi.edu 50%  ccl -n
>> Welcome to Clozure Common Lisp Version 1.4-r14334M  (LinuxX8632)!
>> ? (user-homedir-pathname)
>> #P"/nfs/isd3/philpot/"
>>
>> so far so good, but...
>>
>> ? (let ((*default-pathname-defaults*
>>            (make-pathname :directory '(:absolute "tmp")
>> 	  		 :name "dummy"
>> 			 :type "txt"
>> 			 :version :newest)))
>>     (user-homedir-pathname))
>> #P"/"
>> ? (let ((*default-pathname-defaults* #p"/tmp/a.b"))
>> 	  (user-homedir-pathname))
>> #P"/nfs/isd3/philpot/a.b"
>>
>> Looks like some merging is going on, but why?
>>
>> As I read the CLHS, user-homedir-pathname is supposed to return either
>> a pathname sans name, path, and version components -- or NIL.
>>
>> Is this behavior conformant?
>
> Moreover, on unix, while you're not editing /etc/passwd (or equivalent),
> I'd expect (user-homedir-pathname) to return constantly the same
> value...
>
> Clozure's behavior is clearly wrong, several times.



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