[Bug-vc-dwim] vc-dwim 1.5: external diff died

[Bruno Haible]

Hi Jim,

I'm trying to use vc-dwim 1.5, but I'm getting an error message that I cannot
interpret.

I have 4 modified files:

#       modified:   ChangeLog
#       modified:   doc/posix-functions/utimensat.texi
#       modified:   lib/relocatable.c
#       modified:   lib/utimensat.c

and the ChangeLog modification is this one:

$ (unset GIT_EXTERNAL_DIFF ; git diff ChangeLog)
diff --git a/ChangeLog b/ChangeLog
index a6d363a..1355eb9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2011-10-03  Bruno Haible  <address@hidden>
+
+       relocatable-lib[-lgpl]: Avoid expensive /proc access on Linux, Cygwin.
+       * lib/relocatable.c (ENABLE_COSTLY_RELOCATABLE): New macro.
+       (compute_curr_prefix, shared_library_fullname,
+       find_shared_library_fullname, get_shared_library_fullname, relocate):
+       Use it together with PIC && INSTALLDIR.
+       Reported by <address@hidden>
+       via Charles Wilson <address@hidden>.
+
 2011-10-01  Jim Meyering  <address@hidden>
 
        maint.mk: adjust a release-related rule not to require use of gzip


$ (unset GIT_EXTERNAL_DIFF ; vc-dwim)
external diff died, stopping at ChangeLog.
vc-dwim: error closing pipe from `git diff -B -C HEAD -- ChangeLog': terminated 
with exit status 1

Any explanation?

Bruno