hg commit -m "* add foon* fix bar"

changeset:   13:f2c6526e5911
tag:         tip
date:        Fri Jan 23 23:22:36 2009 +0100
files:       foobar.cpp
description:
    * add foon*fix bar

$ hg commit -m "Did some work
> Now I'm done"

$ hg log
changeset:   0:d2dc019450a2
tag:         tip
user:        Aaron Maenpaa <zacherates@gmail.com>
date:        Sat Jan 24 07:46:23 2009 -0500
summary:     Did some work

$ hg -v log
changeset:   0:d2dc019450a2
tag:         tip
user:        Aaron Maenpaa <zacherates@gmail.com>
date:        Sat Jan 24 07:46:23 2009 -0500
files:       work
description:
Did some work
Now I'm done

hg commit -l con

hg commit -l filename.txt

hg commit -m "$(echo -e 'foonbar')"

hg commit --message "foo`nbar"