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Obviously to use a character you need some font containing that character — this is not specific to XeTeX; it's just that in many other programs this “font fall
by svat 3y ago
Obviously to use a character you need some font containing that character — this is not specific to XeTeX; it's just that in many other programs this “font fallback” happens silently behind the scenes (will pick up a random font from your system containing that character), while with a typesetting system you need to be more explicit. I wrote a bit about that here: https://tex.stackexchange.com/a/377729 https://tex.stackexchange.com/a/377729
- cratermoon 3y agoThe key is that while many fonts have representations for Unicode math points, math symbols and math display are their own things, and typesetting them is not the same as typesetting text. As with musical notation, math typesetting has its own requirements and rules. Knuth created TeX as a way to typeset complex mathematical formulae. TeX has math mode, a completely separate environment. There's more to typesetting it than choosing a font that has the desired symbols.