@mwichary Have you seen these types of ligatures before? Totally new to me. The CSS is marked with:
font-variant-ligatures: discretionary-ligatures;
Hard to find the actual font, the CSS is a bit complex for mepic.twitter.com/i9xZYb7LpW
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Yeah, the “discretionary” ligatures are AFAIU those applied by discretion of the typesetter. They can be the old-style ligatures like you show, or some other stuff depending on the font. Nice way to explore the font could be to drag the file here: https://wakamaifondue.com/