Get rid of .hg/svn/last_rev: We now calculate the last known revision by iterating over all known revisions and finding the highest number. Theoretically, we might be able to simply read the latest entry, but in practice, that's a bug waiting to happen. For instance, we might want to achieve compatibility with '.hg/shamap' as generated by the ConvertExtension, and it not only cannot offer a guarantee of linearity, but it also allows more than one conversion to source exists. I'd say we have other problems to care about until this turns up as a hotspot in profiling. Such as why we leak circa 100MB of memory per 1000 revisions converted ;)

#!/bin/sh

RSVN="`pwd`/rsvn.py"
export PATH=/bin:/usr/bin
mkdir temp
cd temp

svnadmin create repo
svn co file://`pwd`/repo wc

cd wc
mkdir trunk branches
cd trunk
for a in alpha beta gamma ; do
    echo $a > $a
done
cd ..
svn add *
svn ci -m 'initial'

svn up
svn cp trunk branches/test
svn ci -m 'branch'

svn up
echo foo >> branches/test/alpha
svn ci -m 'Mod.'

cd ..
echo rdelete trunk > tmp
echo rcopy branches/test trunk >> tmp
python $RSVN --message=blah --username=evil `pwd`/repo < tmp

svnadmin dump repo > ../replace_trunk_with_branch.svndump