[Bug: 21.4.21] dired complains about an unrelated directory

[Vladimir G. Ivanovic]

I haven't been following the discussion (so I may be out of line), but 
I hope that the fix suggested below is one we'd proffer only to XEmacs 
Beta developers/testers and not to ordinary users.

-- Vladimir

on 02/16/2008 07:29 AM Michael Sperber said the following:
> Mike Kupfer <mike.kupfer at sun.com> writes:
> 
>> I'm currently (as I type this in) unable to visit a directory using
>> dired.  It complains "operation not supported" on some other directory
>> that's totally unrelated to the one I want to visit.  I enabled
>> debug-on-error and got this backtrace:
>>
>> Debugger entered--Lisp error: (file-error "Finding truename" "Operation not supported on transport endpoint" "/net/sfwnv/export/nv/")
>>   file-truename("/net/sfwnv/export/nv/")
>>   apply(file-truename "/net/sfwnv/export/nv/")
>>   dired-handler-fn(file-truename "/net/sfwnv/export/nv/")
>>   file-truename("/net/sfwnv/export/nv/")
>>   dired-directory-truename("/net/sfwnv/export/nv/")
>>   dired-find-buffer-nocreate("/export/kupfer/tonic/stevel/" nil)
>>   dired-internal-noselect("/export/kupfer/tonic/stevel/" nil)
>>   dired-noselect("/export/kupfer/tonic/stevel" nil)
>>   #<compiled-function (dirname &optional switches) "...(7)" [switches dirname switch-to-buffer dired-noselect] 4 ("/net/athyra/usr/local/lib/xemacs/xemacs-packages/lisp/dired/dired.elc" . 33956) (dired-read-dir-and-switches "")>("/export/kupfer/tonic/stevel" nil)
>>   call-interactively(dired)
>>
>>
>> /export/kupfer/tonic/stevel/ is the directory I want to visit.
>> /net/sfwnv/export/nv/ is an NFS directory that I had tried to visit
>> earlier in the day but couldn't (permissions problem).
>>
>> I haven't looked at the relevant dired code, but I'm hypothesizing that
>> it's trying to reclaim resources associated with the directory I
>> couldn't visit.  The buffer for that directory has this text:
>>
>>   /net/sfwnv/export/nv:
>>   ls: error reading directory /net/sfwnv/export/nv/.: Permission denied
>>   total 0
>>
>> Let's try killing that buffer...  done.  And now dired lets me visit
>> /export/kupfer/tonic/stevel/.
> 
> It's trying to see if it can re-use the earlier buffer for the new dired
> command you're doing, and, in the process of that, tries to find the
> truename of the directory of that earlier buffer.  You can set
> `find-file-compare-truenames' and `dired-find-file-compare-truenames' to
> nil to prevent it from doing that.
> 


-- 

Vladimir G. Ivanovic


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