[ cclan-Bugs-834460 ] ASDF defsystem fails if *load-

truename* is nil
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Bugs item #834460, was opened at 2003-11-02 10:30
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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=393636&aid=834460&group_id=28536

Category: asdf
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Lennart Staflin (lenst)
Assigned to: Daniel Barlow (dan_b)
Summary: ASDF defsystem fails if *load-
truename* is nil

Initial Comment:
In the README file (in "Source Location"):

    If a system is being redefined, the top-level pathname 
will be 

    - changed, if explicitly supplied or obtained from *load-
truename*
    - changed if it had previously been set from *default-
pathname-defaults*
    - left as before, if it had previously been set from *load-
truename*
      and *load-truename* is not now bound

There is a minor wording issue, *load-truename* should 
always be bound, but it might be NIL.

If it is NIL, asdf will try to apply TRUENAME to it. That fails 
in, e.g., MCL. The README suggests that it should be ignored 
in this case and the old pathname kept.


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