header = "%{pattern}"
changeset = "{rev}:{node}{author}\n{date|hgdate}\n{branch}\n{parents}{extras}\n{tags}{file_adds}{file_mods}{file_dels}{file_copies}\n{desc}\0"
tag = "t {tag}\n"
file_add = "a {file_add}\n"
file_mod = "m {file_mod}\n"
file_del = "d {file_del}\n"
file_copy = "c {source}\0{name}\n"
extra = "{key}={value|stringescape},"
footer = "%{pattern}"