On Windows look for mercurial.ini in $USERPROFILE, too, if available as os.path.expanduser('~') does not always yield a useful directory. Based on a patch from Edouard Gomez <ed.gomez@free.fr>

#!/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