Hi Nathan,
after further checking it turns out the failure mode I see is exactly
the same like issue 4856, only you need to use --verbose and http to see
it (`r` is the repository like created by `repro-4856.sh`):
```
> svn log --xml --verbose --use-merge-history -r 9:10 http://svn/r/A4
>/dev/null
svn: E175009: The XML response contains invalid XML
svn: E130003: Malformed XML: mismatched tag at line 57
```
Looking into the intermediate XML on the wire shows the same missing
log-item end tag. Again with file: access the XML looks fine.
Franz
