case $# in

0) echo "Please supply a commit message as argument(s)"; exit 2;;

HERE=$PWD

cd ~/src/cpython35

hg pull -u

cp $HERE/src/typing.py Lib/typing.py

cp $HERE/src/test_typing.py Lib/test/test_typing.py

hg ci -m "$@"

cd ~/src/cpython36

hg pull -u ../cpython35

hg merge 3.5

hg ci -m "$@ (3.5->3.6)"

cd ~/src/cpython37

hg pull -u ../cpython36

hg merge 3.6

hg ci -m "$@ (3.6->3.7)"