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cgnieder avatar cgnieder commented on July 19, 2024

I get this warning from your MWE:

Package fontspec Warning: Font "TeXGyreBonum" does not contain requested
(fontspec)                Script "Math".

and a simple $K_s$ displays the same as \Ka.

This is not really a problem of chemmacros but a problem with your choice of fonts…

You can of course do

\chemsetup[acid-base]{
  eq-constant = \text{\textit{K}} ,
  K-acid = \text{s} ,
  K-base = \text{b}
}

which would use the text fonts for the constants but maybe you should rather search for a suiting math font instead that really works. However, the only one available today seems to be Fira Math.

\documentclass{article}
\usepackage{fontspec}

\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{unicode-math}

\usepackage[ngerman]{babel}

\setmainfont{TeX Gyre Heros}
\setsansfont{TeX Gyre Heros}
\setmonofont{TeX Gyre Cursor}
\setmathfont{Fira Math}[Scale=1.1]

\usepackage{chemmacros}

\begin{document}

\( K \) K

\bigskip

\(\pH \pOH \Ka \Kb \pKa \pKb\)

\bigskip

\pH \pOH \Ka \Kb \pKa \pKb

\end{document}

image

PS:

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jnnkB avatar jnnkB commented on July 19, 2024

Hi,

Thanks a lot!

I loaded the wrong font in the previous code. I wanted to load the font 'TeX Gyre Bonum Math'. (see code below)

%!TEX TS-program = xelatex

\documentclass{article}

% Load packages for fonts
\usepackage{fontspec}

% Load math packages
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{unicode-math}

% Set language
\usepackage[ngerman]{babel}

\setmainfont{TeX Gyre Heros}
\setsansfont{TeX Gyre Heros}
\setmonofont{TeX Gyre Cursor}

\setmathfont{TeX Gyre Bonum Math}

\usepackage{chemmacros}
\begin{document}


\(\pH\)

\(\pOH\)

\(\Ka\)
$K_s$

\(\Kb\)

\(\pKa\)

\(\pKb\)

\vspace{1em}

\pH

\pOH

\Ka
$K_s$

\Kb

\pKa

\pKb


\end{document}

The output then shows the difference I meant. It partly uses the sans-serif font and partly the serif font.

image

And again thanks a lot for your notes and xunicode and xltxtra.

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cgnieder avatar cgnieder commented on July 19, 2024

I am unsure what you actually want. “Somewhat ugly” is a quite subjective term. Your output looks like I expect it to look.

Do you want everything to use the math fonts? The p? The H? The OH? The subscripts? Or only part of them?

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jnnkB avatar jnnkB commented on July 19, 2024

I thought that everything should use math fonts. Can you explain why the p and s/b are not using math fonts.

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cgnieder avatar cgnieder commented on July 19, 2024

Well, as is documented the subscripts are in math mode but use \mathrm (maybe you want to adapt the font setting for that, it seems to fall back to the roman text font). H and OH are typeset as atoms. How this is done is determined by how you have set the formula option. By default, this is determined by the chemformula package.

All this can be set through options. The only thing that cannot be changed right now (I'll add an option for future versions) is p. Although, it can, but with a hack:

\documentclass{article}
\usepackage{fontspec}

\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{unicode-math}

\usepackage[ngerman]{babel}

\setmainfont{TeX Gyre Heros}
\setsansfont{TeX Gyre Heros}
\setmonofont{TeX Gyre Cursor}
\setmathfont{TeX Gyre Bonum Math}

\usepackage{chemmacros}

\chemsetup{
  formula = chemformula ,
  acid-base/K-acid = s ,
  acid-base/K-base = b ,
  chemformula/font-spec = TeX Gyre Bonum Math
}

\ExplSyntaxOn
\cs_set:Npn \chemmacros_p_style:n #1 { \chemformula_chcpd:nn {} {#1} }
\ExplSyntaxOff

\begin{document}

\(\pH \pOH \Ka \Kb \pKa \pKb\)

\bigskip

\pH \pOH \Ka \Kb \pKa \pKb

\end{document}

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jnnkB avatar jnnkB commented on July 19, 2024

Thanks a lot.

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