Switch cat command to use walk code. The old syntax of "hg cat FILE REV" is now obsolete. Use "hg cat -r REV FILE" instead, as for all other commands.

#!/bin/sh

hg init a
cd a
echo a > foo
hg add foo
hg commit -m 1 -d "0 0"
rm foo
hg remove foo
hg commit -m 2 -d "0 0"

cd ..
hg clone a b