2 \documentclass{ltjsarticle}
3 \usepackage[a4paper]{geometry}
4 \makeatletter\ltj@alljachar %←全部の(>=U+0080な)文字を和文文字扱いに!
6 \usepackage{luatexja-fontspec}
7 \usepackage{unicode-math}
10 \setmathfont{XITSMath}
11 \setmainjfont{IPAGothic}
14 \reDeclareMathAlphabet{\mathtestA}{\mathrm}{\mathmc}
15 \reDeclareMathAlphabet{\mathtestB}{\mathrm}{\mathtestb}
16 \reDeclareMathAlphabet{\mathtestC}{\mathtesta}{\mathmc}
17 \reDeclareMathAlphabet{\mathtestD}{\mathtesta}{\mathtestb}
18 \reDeclareMathAlphabet{\mathtestE}{\mathtestE}{\mathmc}
19 \begin{document}\makeatletter
22 \frac1{1^2}+\frac1{2^2}+\cdots=
23 \sum_{n=1}^\infty \frac1{n^s}=\zeta(2)=\frac{\pi^2}{6}
24 =\frac16\cdot \pi\times\pi,\qquad a_1,\dots,a_n.
29 ○×○漢×漢\times え\ltjjachar`\“え\ltjalchar`\“え\textquotedblleft え“え←数式外では和文文字扱いのままになっている.
31 \kanjifamily{mc}\selectfont
32 $あいうえおabcde a^\mathrm{b}$
34 mathrm: $\mathrm{\alpha あいうえおabcde}^\mathrm{b}$
36 mathbf: $\mathbf{\alpha あいうえおabcde}$
38 mathmc: $\mathmc{\alpha あいうえおabcde}$
40 mathgt: $\mathgt{\alpha あいうえおabcde}$