Is there a way to add programming ligatures to an existing font, similar to how Nerd Font patches existing fonts to add useful terminal glyphs like the Powerlin

Is there a way to add programming ligatures to an existing font, similar to how Nerd Font patches existing fonts to add useful terminal glyphs like the Powerline symbols¹? I would love to have a ligatured version of that font https://github.com/rbanffy/3270font https://github.com/rbanffy/3270font 1) the last sentence of the article implies that the author of the article abhor them as much as programming ligatures. I don't understand why but preference in taste, color, esthetic are not objective, nor absolute, so I am not the one to judge him.