dirstate.changes() now distinguishes 'hg remove'd or just deleted files. Interface is not yet changed. Non-regular files are considered to be removed or deleted. Removed the unneeded match(fn) call for adding to the unknown list.

#!/bin/sh

hg init
echo "[hooks]" > .hg/hgrc
echo 'precommit = echo precommit hook' >> .hg/hgrc
echo 'commit = echo commit hook: $NODE' >> .hg/hgrc
echo a > a
hg add a
hg commit -m "test" -d "0 0"