Re: The Logical Pathname (Song)

"Rainer Joswig (as joswig at lisp dot de)" <[email protected]>
Newsgroups gmane.lisp.lispworks.general
Message-ID <[email protected]>
why would "ASD.F" be parsed as a logical pathname?

> Am 13.03.2026 um 21:49 schrieb Martin Simmons <[email protected]>:
> 
> Because merge-pathnames merges the directory components rather than just
> copying them.
> 
> The directory of "ASD.F" is (:absolute) so this overrides any directory in
> default-pathname.
> 
> The reason that the directory of "ASD.F" has to be (:absolute) is because that
> is the only way to represent a logical pathname namestring at the top level of
> the hierarchy.
> 
> -- 
> Martin Simmons
> LispWorks Ltd
> http://www.lispworks.com/
> 
> 
> 
>>>>>> On Fri, 13 Mar 2026 21:35:09 +0100, Rainer Joswig (as joswig at lisp dot de) said:
>> 
>> If it constructs a logical pathname using the host from the default-pathname, why would the directory from the default-pathname not be copied, too?
>> 
>>> Am 13.03.2026 um 19:35 schrieb Martin Simmons <[email protected]>:
>>> 
>>> It looks correct to me.  What are other CL's doing differently?
>>> 
>>> -- 
>>> Martin Simmons
>>> LispWorks Ltd
>>> http://www.lispworks.com/
>>> 
>>> 
>>> 
>>>>>>>> On Wed, 11 Mar 2026 19:54:07 +0100, Marco Antoniotti (as marco dot antoniotti at unimib dot it) said:
>>>> 
>>>> Hi
>>>> 
>>>> I have the following
>>>> 
>>>> CL-USER 225 >
>>>> (setf (logical-pathname-translations "LP")
>>>> '(("**;*.*.*" "~/Projects/Foo/Bar/**/")))
>>>> (("**;*.*.*" "~/Projects/Foo/Bar/**/"))
>>>> 
>>>> Then
>>>> 
>>>> CL-USER 256 > (merge-pathnames "ASD.F" "LP:FOO;QWE;")
>>>> #P"LP:ASD.F.NEWEST"
>>>> 
>>>> Which is ... different from what other CL's do.
>>>> 
>>>> Any hermeneutics about this in LW?
>>>> 
>>>> Cheers
>>>> MA
>>>> 
>>>> 
>>>> -- 
>>>> Marco Antoniotti, Professor, Director         tel. +39 - 02 64 48 79 01
>>>> DISCo, University of Milan-Bicocca U14 2043   http://dcb.disco.unimib.it
>>>> Viale Sarca 336
>>>> I-20126 Milan (MI) ITALY
>>>> 
>>>> REGAINS: https://regains.disco.unimib.it/
>>>> 
>>> 
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>> 
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