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I've recently been experimenting with typesetting and I stumbled upon an issue, where the following preamble:

\documentclass[12pt,a4paper]{memoir}

\usepackage{stix2}
\usepackage{mathspec}
\defaultfontfeatures{Mapping=tex-text}
\usepackage{fontspec}


\setmainfont[
Extension={.otf},
UprightFont={-Regular},
BoldFont={-Bold}, 
ItalicFont={-Italic},
BoldItalicFont={-BoldItalic}
]{StixTwoText}


\setmathfont(Latin,Greek){StixTwoText-Italic.otf}
\setmathfont(Digits){StixTwoText-Regular.otf} 
\setmathrm[BoldFont={StixTwoText-Bold.otf}]{StixTwoText-Regular.otf}

Generates errors written in the title. Removing both the \setmathfont and \setmathrm OR \usepackage{stix2} commands fixes the issue, but changes the math fonts.

Can I somehow use the STIX Two Text Italic font in math mode while still having the alternate math symbols defined in stix2?

J0K3R_12QQ
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    Do you need mathspec at all? I believe that unicode-math is better with the fonts you want. – egreg Jul 19 '21 at 17:02
  • @egreg Perhaps that would be a good idea. I've never used unicode-math. How would I go about implementing the above code with it? – J0K3R_12QQ Jul 19 '21 at 17:07

1 Answers1

4

You should use unicode-math for this, which supports STIX2 Math.

\documentclass[12pt,a4paper]{memoir}

\usepackage{fontspec}
\usepackage[math-style=ISO]{unicode-math}


\setmainfont[
  Extension=.otf,
  UprightFont=-Regular,
  BoldFont=-Bold, 
  ItalicFont=-Italic,
  BoldItalicFont=-BoldItalic,
]{STIXTwoText}


\setmathfont[
  Extension=.otf,
]{STIXTwoMath-Regular}


\begin{document}


$\alpha+x+\Gamma+\symrm{A}+\symbf{B}+123$


\end{document}

enter image description here

If you remove the math-style=ISO option, you get

enter image description here

Note that STIX should be spelled all capitals; on case-insensitive file systems Stix might find the font, but the document wouldn't be portable.

egreg
  • 1,121,712
  • Thanks, that seems to work. One more question: is it possible to change the other math fonts in this setup? For example, with mathspec I was able to change the mathfrak font style with \setmathfrak. Can I do something similar in unicode-math? – J0K3R_12QQ Jul 19 '21 at 18:49
  • Ok, I seem to have found an answer to that question here: https://tex.stackexchange.com/questions/437834/alternative-to-mathfrak-a

    Thanks again for your help.

     – J0K3R_12QQ Jul 19 '21 at 19:28