Fix the directory and revlog collision problem
This adds escaping for directory names so that directory foo.i doesn't
collide with the revision data for file foo.
#!/bin/sh
set -x
hg init
echo "nothing" > a
hg add a
hg commit -m ancestor -d "0 0"
echo "something" > a
hg commit -m branch1 -d "0 0"
hg co 0
echo "something else" > a
hg commit -m branch2 -d "0 0"
export HGMERGE=merge
hg up -m 1
hg id
grep -Ev ">>>|<<<" a
hg status