bsd-calendar 0.0.0

The calendar utility reads events from plain text files and outputs today’s events. The files look something like this:

#include <holiday>
#include <birthday>

06/15\tJune 15
Thu\tEvery Thursday.
15\t15th of every month.

05/Sun+2\tsecond Sunday in May (Muttertag)
04/Sun-1\tlast Sunday in April

Easter-2\tGood Friday (2 days before Easter)
Paskha\tOrthodox Easter

This implementation adds some new features while dropping others, most notably, the date formats are not completely compatible:

# added formats
1999/06/15\tJune 15 1999
1999/06/15*\tJune 15 (usefull for birthdays)
1999/05/Sun+2\tsecond Sunday in May 1999
1999/06/15+2\tJune 15 1999 and every second week since then

# removed formats (mostly alternative formats)
Jun. 15\t06/15
15 June\t06/15
Thursday\tThu
June\t06/01
15 *\t15

May Sun+2\t05/Sun+2
04/SunLast\t04/Sun-1