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Thanks, Nicola! What I did in the end was saying \glsaddeach[format=glsignore]{…} instead of \glsaddallunused with the comma-separated list … of entries that are never referenced (hence, do not have page numbers) but still have to be present in the index. (In the given example, the list would have ...

Continuing http://tex.stackexchange.com/a/581548, consider the following code:

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{intersections,angles,calc}
\newlength{\bridgeTunnelRadius}\setlength{\bridgeTunnelRadius}{.45ex}%%% when drawing two lines over each other that should not ...

What do these two commands ( \mathaccentV for pdflatex and \Umathaccent for {xe|lua}latex ) do exactly and how to use them (or how are they used)? As an example, could anyone give an example of how to use them to construct right arrows above math symbols, such as, e.g., a⃗ (except that the small ...

Consider the input

\documentclass{acm_proc_article-sp}
\begin{document}
\texttt{``foo''}
\end{document}

using the most recent acm_proc_article-sp.cls , which I believe to be version 3.2 and which you can take, e.g., from https://raw.githubusercontent.com/tewalds/CMPUT663Survey/master/acm_proc ...

Feeding

\documentclass{article}
\pagestyle{empty}
\usepackage[math-style=ISO]{unicode-math}
\setmainfont[Ligatures=TeX]{TeX Gyre Termes}
\setsansfont{TeX Gyre Heros}[Scale=0.88]
\setmonofont{TeX Gyre Cursor}
\setmathfont[Ligatures=TeX]{TeX Gyre Termes Math}
\usepackage{todonotes}
%%% Simplified ...

Feeding the code

\documentclass{standalone}
%\usepackage{amssymb}%%% Useless here.
\usepackage{unicode-math}
\setmainfont[Ligatures=TeX]{TeX Gyre Termes}%%% we need Times or a Times clone.
\setsansfont{TeX Gyre Heros}[Scale=0.88]%%% Somewhat ok.
\setmonofont{TeX Gyre Cursor}%%% No explicit turning ...

Feeding the code

\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage{mathtools}%%% loads amsmath internally
\mathtoolsset{mathic=true} %%% See http://tex.stackexchange.com/a/3496
\usepackage[math-style=ISO]{unicode-math}%%% In general, we wish to have ISO style.
\setmainfont[Ligatures ...

samcarter wrote:It is trivial to size scale it automatically if one uses a unit relative to the font size, e.g. em

I correct myself: I find it difficult... Probably, you mean ex rather than em, to match the height of the font.
Anyway, even if it's solved, the problem of how to get X into the PDF text layer remains.

A picture of X wouldn't result in X in the text layer of the PDF file generated. Moreover, I find it difficult to size-scale it automatically if needed.

In the old times of mathptmx , we wrote stuff such as

\documentclass{article}
\pagestyle{empty}
\usepackage{mathptmx}
\begin{document}
Let \(\mathcal{X}=\{X_1,\ldots,X_n\}\).
\end{document}

and got from pdflatex a fancy calligraphic math X, which was sufficiently fancy to be visibly distinct ...