bug#2869: 23.0.91; ediff-revision via TRAMP broken

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the [email protected] mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

On a Mac, open an svn-controlled file via TRAMP to a Linux machine.
`M-x ediff-revision <RET> <RET> <RET>'

This was the backtrace:

Debugger entered--Lisp error: (wrong-type-argument integerp nil)
  signal(wrong-type-argument (integerp nil))
  byte-code("Â!ˆÃ	@	A\"‡" [tmpfile err delete-file signal] 3)
  tramp-handle-file-local-copy("/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~")
  apply(tramp-handle-file-local-copy "/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~")
  tramp-sh-file-name-handler(file-local-copy "/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~")
  apply(tramp-sh-file-name-handler file-local-copy "/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~")
  tramp-file-name-handler(file-local-copy "/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~")
  file-local-copy("/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~")
  tramp-handle-insert-file-contents("/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~" t nil nil nil)
  apply(tramp-handle-insert-file-contents ("/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~" t nil nil nil))
  tramp-sh-file-name-handler(insert-file-contents "/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~" t nil nil nil)
  apply(tramp-sh-file-name-handler insert-file-contents ("/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~" t nil nil nil))
  tramp-file-name-handler(insert-file-contents "/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~" t nil nil nil)
  insert-file-contents("/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~" t)
  byte-code("ÂÃ	Â\"ˆ)‡" [inhibit-read-only filename t insert-file-contents] 3)
  find-file-noselect-1(#<buffer common.mk.~3281~<2>> "/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~" nil nil "/ssh:[email protected]:/data/boost/searchme_webmap/tools/common.mk.~3281~" nil)
  find-file-noselect("/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~")
  vc-find-revision(#("/ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk" 55 70 (face (diff-file-header diff-header) fontified t)) nil)
  ediff-vc-revision-other-window(nil)
  byte-code("ŠÆ!ˆpÇ )ŠȘ„Æ!ˆpÇ )ÉÊË\nDÌȘË
DEF
B
ʇ" [rev1 rev1buf file1 rev2 rev2buf file2 ediff-vc-revision-other-window buffer-file-name "" lambda nil ediff-delete-version-file or startup-hooks] 7)
  ediff-vc-internal("" "" nil)
  ediff-revision(nil)
  call-interactively(ediff-revision t nil)
  execute-extended-command(nil)
  call-interactively(execute-extended-command nil nil)


If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/Applications/Emacs.app/Contents/Resources/etc/DEBUG for instructions.


In GNU Emacs 23.0.91.1 (i386-apple-darwin9.6.0, NS apple-appkit-949.43)
 of 2009-03-05 on black.local
Windowing system distributor `Apple', version 10.3.949
configured using `configure  '--with-ns''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t

Major mode: Debugger

Minor modes in effect:
  diff-auto-refine-mode: t
  shell-dirtrack-mode: t
  show-paren-mode: t
  server-mode: t
  global-auto-revert-mode: t
  delete-selection-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-, C-x C-n M-! s v n SPC u p & <return> C-g C-g C-p 
C-n M-! M-p C-. SPC - - n o - a u t h - c a c h e <return> 
y e s <return> <down-mouse-1> <mouse-1> <down-mouse-1> 
<mouse-1> C-x C-k C-x C-n M-! M-p C-. C-. C-. C-. SPC 
- - u s e r = d a v e <return> M-! s v n SPC - - h 
e l p SPC u p <return> M-! M-p M-p C-. C-. C-. C-. 
C-. C-. C-, C-b C-d n a m e SPC <return> a n d b 4 
a c k <return> M-! s v n SPC d i f f SPC - d u r <backspace> 
<backspace> <backspace> <backspace> <backspace> <return> 
C-x C-n M-x d i f f - m o 9 d <tab> <backspace> <backspace> 
d <tab> <return> n <return> C-n C-n C-p C-n C-p C-n 
C-p C-p C-p C-n C-n C-n C-n C-p C-n <down-mouse-1> 
<mouse-1> M-x e d i f f - r e v i <tab> <return> <return> 
<return> <return> C-n C-n C-p C-p C-p C-p C-p C-p M-x 
e d i f f - b u g <tab> <tab> <backspace> <backspace> 
<backspace> <tab> <tab> - b u g f <backspace> <tab> 
<tab> C-g M-x r e p o r t - b u g <tab> <return> R 
e m o t e SPC e d i f f - <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
e d i f f - r e v i s i o n SPC v i a C-g C-g C-x b 
* B a <tab> <return> q C-x C-b M-x M-p M-p <return> 
<return> <return> <return> C-p C-SPC M-> C-g M-x M-p 
M-p <return>

Recent messages:
Hunk already applied
Checking out /ssh:[email protected]:/home/boost/searchme_webmap/tools/common.mk.~3281~...done
Wrote /var/folders/w6/w6aHCL+5EVeBUsDYKAF0pU+++TI/-Tmp-/tramp.401Znj.mk
byte-code: Wrong type argument: integerp, nil
Making completion list...
Quit [3 times]
Back to top level.
Wrote /var/folders/w6/w6aHCL+5EVeBUsDYKAF0pU+++TI/-Tmp-/tramp.401mxp.mk
Entering debugger...
Mark set
Quit
-- 
Dave Abrahams
BoostPro Computing
http://www.boostpro.com