I've done the same with my own programming font (mononoki http://madmalik.github.io/mononoki/ http://madmalik.github.io/mononoki/ ) There is a difference betwe

I've done the same with my own programming font (mononoki http://madmalik.github.io/mononoki/ http://madmalik.github.io/mononoki/ ) There is a difference between a ligature that a font may provide when you type in f and i and the unicode point 'LATIN SMALL LIGATURE FI', that is in there for historical reasons. the first one would make sense as double width character, the second one should be single width to show, that the unicode point 'LATIN SMALL LIGATURE FI' is meant