mergetools.hgrc: add vimdiff
Imported from deb_specific__mergetools patch in Debians patch queue:
http://svn.debian.org/viewsvn/python-apps/packages/mercurial/trunk/debian/patches/
#!/bin/sh
hg init
echo a > a
hg ci -Am t
hg mv a b
hg ci -Am t1
hg debugrename b
hg mv b a
hg ci -Am t2
hg debugrename a
echo % test with --rev
hg debugrename --rev 1 b