Python script to sort text by the dates in @Due(YYYY-MM-DD) tags. Made for use with TaskPaper files.

tpsort.py

#!/usr/bin/env python

import re
import sys

# first & only argument is the text to be parsed
theText = sys.argv[1]

theList=[]
j=""

for i in theText.splitlines():
	match = re.search('@due\(\d\d\d\d\-\d\d\-\d\d\)',i)
	if match:
		theKey = i[i.find('@due(')+5:i.find('@due(')+15]
	else:
		theKey =''
	theList = theList + [(theKey, i)]

for i in sorted(theList):
		j = j+i[1]+"\n"

j = j[:-1]
print j

I run this as an OS X Service using Automator's Run Shell Script action, which makes it accessible via right-click on the selected text.

• Note to self (and everyone else) - remember to set Pass Input as arguments in Automator