bug#27315: Regression: `abbreviate-file-name' and `tramp-file-name-handler'

[Alexander Shukaev]

On 06/12/2017 05:59 PM, Michael Albinus wrote:
> There's no reason to do this at this point, I've checked the sources. So
> I have instrumented `tramp-handle-file-name-case-insensitive-p' to print
> its backtrace, in order to understand where it is called from. Committed
> to master.
>
> Could you, pls, rerun your test with `tramp-verbose' being 10?

Thanks Michael,

Attached to this answer, you will find the corresponding log file, and 
as usual, I had to "C-g" it after some time.  Looks interesting and 
basically as I stated originally,

  tramp-handle-file-name-case-insensitive-p(#("/sudo:root@g75vw:/" 6 10 
(tramp-default t)))
  apply(tramp-handle-file-name-case-insensitive-p 
#("/sudo:root@g75vw:/" 6 10 (tramp-default t)))
  tramp-sh-file-name-handler(file-name-case-insensitive-p 
#("/sudo:root@g75vw:/" 6 10 (tramp-default t)))
  apply(tramp-sh-file-name-handler file-name-case-insensitive-p 
#("/sudo:root@g75vw:/" 6 10 (tramp-default t)))
  tramp-file-name-handler(file-name-case-insensitive-p 
#("/sudo:root@g75vw:/" 6 10 (tramp-default t)))
  file-name-case-insensitive-p(#("/sudo:root@g75vw:/" 6 10 
(tramp-default t)))
  abbreviate-file-name(#("/sudo:root@g75vw:/" 6 10 (tramp-default t)))
  (list (user-login-name) "@" (system-name) ":" (abbreviate-file-name 
(or (buffer-file-name) (file-name-as-directory default-directory))))
  eval((list (user-login-name) "@" (system-name) ":" 
(abbreviate-file-name (or (buffer-file-name) (file-name-as-directory 
default-directory)))))
  redisplay_internal\ \(C\ function\)()

redisplay triggers `abbreviate-file-name' on a TRAMP-like path.  Though 
how come that you cannot reproduce it?  Any further ideas?  Thank you.

Kind regards,
Alexander

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