I use [calendar][] to display birthdays and things that I should
remember a few days before they hit the fan.  However, `calendar`
doesn't know all of my relative's birthdays out of the box.  I use
[Gramps][] to track my family's genealogy, so all the birthday data is
in the Gramps database.  This is how we get that information out in a
format that calendar can read:

    $ python src/gramps.py -O wtk -a report -p name=calendar_dates,of="${HOME}/.calendar/birthday"
    $ grep --color=always -e 'Important Name' -e ^ ~/.calendar/birthday.txt > ~/.calendar/birthday.color

The `-e ^` ensures that every line in `birthday.txt` is copied to
`birthday.color`, and `-e 'Important Name'` uses ANSI escape sequences
to highlight the name of someone particularly close to you.

The `CalendarDates` plugin is my adaptation of the `BirthdayReport`
plugin distributed with Gramps ([[CalendarDates.patch]]).  To install
my plugin, create `~/.gramps/gramps34/plugins/CalendarDates`, drop
[[CalendarDates.gpr.py]] into the new directory, copy your Gramps
installation's version of `BirthdayReport.py` into the new directory
as `CalendarDates.py` and apply my patch with:

    $ patch CalendarDates < CalendarDates.patch

[calendar]: http://bsdcalendar.sourceforge.net/
[Gramps]: http://www.gramps-project.org/

[[!tag tags/linux]]
[[!tag tags/tools]]
[[!tag tags/python]]