調べてみた。図にしてみた。基本は entry, item, header (line) のよう
だ。


以下、参考文献:

- Vim のドキュメント
  <http://www.etsimo.uniovi.es/vim/doc/pi_spec.txt>

Everytime you run the plugin, it will check to see if the last
entry in the changelog has been written today and by you. If
it's the entry mathes (注: matches?), it will just insert a new
changelog item, otherwise it will create a new changelog entry.

- Maintaning the CgangeLog (3 章)
  <http://www.gnu.org/software/guile/changelogs/guile-changelogs_3.html>

The header line for the ChangeLog entry should have the format
shown above. If you are using an old version of Emacs (before
20.1) that generates entries with more verbose dates, consider
using `etc/add-log.el', from the GDB source tree.

- cl2xhtml <http://www.eyrie.org/ftp/software/web/cl2xhtml>

def process_heading(line):
    """Convert a heading line into XHTML and output it.
...
def process_entry_line(line, begin, paragraph):
    """Convert a single line from a ChangeLog entry to XHTML
and output it.