{{ "%+010d"|sprintf:-123 }}
{{ "%+010d"|vsprintf:[-123] }}
{{ "%+010d"|fmt:-123 }}
{{ "%+010d"|vfmt:[-123] }}
{{ "I've got %2$d apples and %1$d oranges."|fmt:4:2 }}
{{ "I've got %(apples)d apples and %(oranges)d oranges."|fmt:{apples: 2, oranges: 4} }}