I’m trying to learn and understand how fonts work, such as SIL fonts. I’ve troubles understanding how ligature concretely happen. My apologies if this is the wrong forum to ask this question.
For example, how does the combination of “f” + “i” becomes either “fi” (two glyphs side-by-side) or a ligature (“f” and “i” combined into one glyph). (I’ve read in great details Understanding characters, keystrokes, codepoints and glyphs)
Thank you very much in advance!