Revert almost all of 5be434785317; add a test
Because of file copies, we should update the manifest dict only after
committing all files.
#!/bin/sh
unset HGUSER
EMAIL="My Name <myname@example.com>"
export EMAIL
hg init test
cd test
touch asdf
hg add asdf
hg commit -d '1000000 0' -m commit-1
hg tip
unset EMAIL
echo 1 > asdf
hg commit -d '1000000 0' -m commit-1
hg commit -d '1000000 0' -u "foo@bar.com" -m commit-1
hg tip
echo "[ui]" >> .hg/hgrc
echo "username = foobar <foo@bar.com>" >> .hg/hgrc
echo 12 > asdf
hg commit -d '1000000 0' -m commit-1
hg tip
echo 1 > asdf
hg commit -d '1000000 0' -u "foo@bar.com" -m commit-1
hg tip