This is equivalent to (gtk.text_iter.TextIter.startsTag || gtk.text_iter.TextIter.endsTag), i.e. it tells you whether a range with tag applied to it begins or ends at iter.
a #GtkTextTag, or null
whether tag is toggled on or off at iter
This is equivalent to (gtk.text_iter.TextIter.startsTag || gtk.text_iter.TextIter.endsTag), i.e. it tells you whether a range with tag applied to it begins or ends at iter.