corrupt data with svn 1.7.14?

I've reported the following bug in the Debian BTS:

  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=734163

I first thought it could be due to some problem with the binNMU,
but the problem still occurs after downgrading to the original
1.7.14. However I no longer get random behavior, just consistent
broken behavior. I don't know whether this is Debian-specific or
not.

With my private repository:

xvii:...www/contents/cine> =svn diff -r 51990 index.fr.xml
Index: index.fr.xml
===================================================================
Cannot display: file marked as a binary type.
svn: E000022: Valid UTF-8 data
(hex: 73 76 6e 3a 6d 69 6d 65 2d 74 79 70 65 20 3d 20 28)
followed by invalid UTF-8 sequence
(hex: a8 a5 93 55)

with:

svn, version 1.7.14 (r1542130)
   compiled Dec 27 2013, 15:24:53

This problem is reproducible on a second Debian/unstable machine,
but not on a 3rd machine, with svn 1.6.12.

-- 
Vincent Lefèvre <vincent@vinc17.net> - Web: <http://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)