Week

How can I find the exact color scheme beamer uses internally? For example, I'd like to use the same color as the default \frametitle, but I'm having trouble reproducing it manually. Is there a way to query or extract the underlying color definition (e.g. RGB values) that a given beamer color style resolves to, so I don't have to guess it by eye?

Is there "official documentation" for what commands, macros and APIs are available in LaTeX? In modern projects like Rust, there is a definitive place to look for that information. Is there an equivalent for LaTeX? For example, I was recently looking for information on relative paths in LaTeX. It's not obvious where to look on the LaTeX or TeXdoc pages. Searching "latex relative path" won't find it. I eventually found the import package, then the related currfile package and then the \CurrentFilePath macro (introduced in 2020). But searching "latex currentfilepath" doesn't turn up documentation for it either, just Stack Exchange posts, some Reddit posts, and currfile. Eventually, I hit on the Hook Management document, but that was only after I was specifically targeting this macro trying to figure out if it was documented at all. Is there a go-to place to look for documentation on how LaTeX works?

I just changed from KOMA to memoir package. I am correcting long memories and I would like to have all my suggestions in blue. But to change the color of the footnotes turns out to be impossible to solve for a memoir beginner. My attempts before pasting a MWE: % \renewcommand\footnote[1]{\textcolor{myblue}{#1}} % \renewcommand{\foottextfont}{\color{myblue}} % \renewcommand{\footnotelayout}{\color{myblue}} % \renewcommand{\footnotelayout}{\color{myblue}\relax} % \renewcommand\thefootnote{\color{myblue}\thefootnote} % \renewcommand{\foottextfont}{\color{myblue}\reset@font} % \renewcommand{\foottextfont}{\color{myblue}\normalfont} % \renewcommand{\foottextfont}{{\color{myblue}\normalfont}} % \usepackage{etoolbox} % \makeatletter % \pretocmd{\@makefntext}{\begingroup\color{myblue}}{}{} % \apptocmd{\@makefntext}{\endgroup}{}{} % \makeatother % \footmarkstyle{\color{myblue}\textsuperscript{#1}} % \renewcommand{\foottextfont}{\color{myblue}\footnotesize} % \color{myblue} % \definecolor{Normalcolor}{myblue}{0.8} % \newcommand{\splcolor}{\color{Normalcolor}} % \let\normalcolor\splcolor This MWE looks good (first page), but changing the page, the color of the footnote spills over to the main text on the next page. (Compiled with XeLaTeX) \documentclass[a4paper]{memoir} \usepackage{xcolor} \usepackage{lipsum} \usepackage{xcolor} \definecolor{myblue}{rgb}{0.25,0.45,0.75} \usepackage{pdfcolfoot} \renewcommand{\foottextfont}{\color{myblue}\footnotesize} \begin{document} \lipsum[1]\footnote{footnote 1} This works fine.\footnote{footnote 2} This creates problems.\footnote{footnote 3} This creates even more problems.\footnote{footnote 4} \lipsum[6-7]\footnote{first footmarker on next page} More text.\footnote{second footmarker on next page} \newpage \lipsum[9]\footnote{Which color?} \end{document} Perhaps should I go back to KOMA packages? thx marek

Consider the following MWE: \documentclass{article} \usepackage{ulem} \newcommand{\parenthesize}[1]{(#1)} \begin{document} \uline{This sentence is about to be repeated. This sentence is about to be repeated. This sentence is about to be repeated. This sentence is about to be repeated. } \uline{This sentence is about to be repeated. \parenthesize{This sentence is about to be repeated. This sentence is about to be repeated. } This sentence is about to be repeated. } \end{document} Here's the output: As you can see, the first invocation of \uline, whose argument calls no commands, is just fine. However, the second invocation, which calls \parenthesize somewhere in the middle, fails to break the paragraph. I realize this has to do with TeX's macro expansion mechanism, and \expandafter might be part of the solution, but I do not know how to fix it. This post is the closest fix, but since in my case, I invoke the command somewhere inside the argument to \uline, it does not apply to me. I have also read two other posts. Their solutions do not apply either. Also, using \ul of soul or soulutf8 in place of \uline gives an error. Just to be clear, here's the question: How do I produce the correct output in the second invocation of \uline?

I have a latex code and I prefer the table to be above the footnote. I do not understand why latex by default puts the table below footnote. How to fix it? \documentclass{article} \usepackage{graphicx} \begin{document} \maketitle \section{Introduction} This is a test table\footnote{This is a footnote}: \begin{table}[!b] \centering \begin{tabular}{|c|c|} \hline \textbf{Header 1} & \textbf{Header 2} \\ \hline Row 1, Cell 1 & Row 1, Cell 2 \\ \hline Row 2, Cell 1 & Row 2, Cell 2 \\ \hline \end{tabular} \caption{A small bottom-aligned table} \label{tab:small_table} \end{table} \end{document} Note: I am not talking about footnote of a table. The footnote is outside of the table. Note: The table is to be at the bottom of the page yet above the footnote. I know already putting it on the top will solve the problem. Update: Thanks David, I am after something like this:

I am trying to create the this Infographic Image using Latextikz library: However, I am unable to get the ribbon effects for the arrow hiding behind the information card. Here is my example code: \documentclass[tikz]{standalone} \usepackage[T1]{fontenc} \usepackage{helvet} \renewcommand{\familydefault}{\sfdefault} \usetikzlibrary{shadows,calc} % ---- Colour palette (sampled from the source infographic) ---- \definecolor{ifsiBlue}{HTML}{5B9BD5} \definecolor{ifsiGreen}{HTML}{7F9B72} \definecolor{ifsiTeal}{HTML}{1D9AA6} \definecolor{ifsiOrange}{HTML}{E8912D} \definecolor{ifsiNavy}{HTML}{1B3A8C} \definecolor{ifsiDark}{HTML}{2B2B2B} \definecolor{ifsiRule}{HTML}{8A8A8A} % ---- Ribbon-arrow shape, drawn pointing in the +x direction, then rotated --- \newcommand{\ribbonShape}{% (0,-0.6) rectangle (3.0,0.6); (3.0,-1.2) -- (4.6,0) -- (3.0,1.2) -- cycle; } \newcommand{\ribbonArrow}[4]{% \begin{scope}[shift={(#1,#2)}, rotate=#3] % ---- soft contained drop shadow (concentric, same direction, growing blur) ---- \foreach \r/\op in {0.30/0.05, 0.22/0.07, 0.15/0.10, 0.09/0.14} { \begin{scope}[shift={(\r,-\r)}] \fill[black, opacity=\op, rounded corners=1pt] (0,-0.62) rectangle (3.0,0.62); \fill[black, opacity=\op] (3.0,-1.22) -- (4.62,0) -- (3.0,1.22) -- cycle; \fill[black, opacity=\op] (0,-0.62) -- (-0.58,-0.30) -- (-0.58,0.30) -- (0,0.62) -- cycle; \end{scope} } % ---- fold flap (darker underside), drawn behind the body ---- \fill[#4!52!black] (0,-0.6) -- (-0.58,-0.30) -- (-0.58,0.30) -- (0,0.6) -- cycle; \draw[#4!30!white, line width=0.7pt] (-0.58,-0.30) -- (0,-0.6); % ---- main ribbon body ---- \fill[#4] (0,-0.6) rectangle (3.0,0.6); % ---- arrow head ---- \fill[#4] (3.0,-1.2) -- (4.6,0) -- (3.0,1.2) -- cycle; % ---- thin highlight along the top edge for a touch of depth ---- \draw[#4!35!white, line width=0.6pt] (0,0.6) -- (3.0,0.6) -- (4.6,0); \end{scope} } \begin{document} \begin{tikzpicture}[ font=\sffamily, >=stealth ] % ============ Canvas: 34 wide x 20 tall ============ \useasboundingbox (0,0) rectangle (34,20); % ============ Four ribbon arrows: confined to the centre band, converging on the middle ============ \ribbonArrow{12.2}{15.9}{-45}{ifsiBlue} % top-left -> points down-right toward centre \ribbonArrow{21.8}{15.9}{225}{ifsiGreen} % top-right -> points down-left toward centre \ribbonArrow{12.2}{4.1}{45}{ifsiTeal} % bottom-left -> points up-right toward centre \ribbonArrow{21.8}{4.1}{135}{ifsiOrange} % bottom-right -> points up-left toward centre % ============ TOP-LEFT: Islamic Banking ============ \node[anchor=east, text=ifsiBlue, font=\sffamily\bfseries\fontsize{50}{50}\selectfont] at (5.6,16.15) {9.7\%}; \draw[ifsiRule, line width=0.7pt] (5.95,15.35) -- (5.95,16.95); \node[anchor=north west, text=ifsiDark, align=left, font=\sffamily\fontsize{18}{20}\selectfont] at (6.3,17.15) {Islamic Banking\\[2pt] YoY Growth}; \node[anchor=north west, text=ifsiDark, font=\sffamily\bfseries\fontsize{17}{17}\selectfont] at (6.3,15.45) {69.3\% of IFSI}; % bank icon \begin{scope}[shift={(10.7,16.15)}, ifsiRule, line width=1.1pt] \draw (-0.5,-0.38) -- (0.5,-0.38); \draw (-0.34,-0.38) -- (-0.34,0.09); \draw (-0.12,-0.38) -- (-0.12,0.09); \draw (0.11,-0.38) -- (0.11,0.09); \draw (0.33,-0.38) -- (0.33,0.09); \draw (-0.55,0.09) -- (0.55,0.09) -- (0,0.52) -- (-0.55,0.09) -- cycle; \draw[->] (-0.24,0.38) -- (-0.24,-0.62); \draw[->] (0.02,0.38) -- (0.02,-0.62); \end{scope} % ============ TOP-RIGHT: Sukuk Outstanding ============ \node[anchor=west, text=ifsiGreen, font=\sffamily\bfseries\fontsize{50}{50}\selectfont] at (28.4,16.15) {21.8\%}; \draw[ifsiRule, line width=0.7pt] (28.05,15.35) -- (28.05,16.95); \node[anchor=north east, text=ifsiDark, align=right, font=\sffamily\fontsize{18}{20}\selectfont] at (27.7,17.9) {Suk\=uk\\[2pt] Outstanding\\[2pt] YoY Growth}; \node[anchor=north east, text=ifsiDark, font=\sffamily\bfseries\fontsize{17}{17}\selectfont] at (27.7,15.05) {>USD 1tn milestone}; % growth chart icon \begin{scope}[shift={(23.3,16.15)}, ifsiRule, line width=1.1pt] \draw (-0.55,-0.44) -- (-0.55,0.46) -- (0.55,0.46); \draw (-0.38,-0.44) rectangle (-0.2,-0.05); \draw (-0.09,-0.44) rectangle (0.09,0.11); \draw (0.2,-0.44) rectangle (0.38,0.27); \draw[->] (-0.46,0.0) -- (0.02,0.31) -- (0.38,0.44); \end{scope} % ============ BOTTOM-LEFT: Islamic Funds ============ \node[anchor=east, text=ifsiTeal, font=\sffamily\bfseries\fontsize{50}{50}\selectfont] at (5.6,3.85) {25.6\%}; \draw[ifsiRule, line width=0.7pt] (5.95,3.05) -- (5.95,4.65); \node[anchor=north west, text=ifsiDark, align=left, font=\sffamily\fontsize{18}{20}\selectfont] at (6.3,4.85) {Islamic Funds\\[2pt] YoY Growth}; \node[anchor=north west, text=ifsiDark, font=\sffamily\bfseries\fontsize{17}{17}\selectfont] at (6.3,3.15) {4.1\% of IFSI}; % hand + coin icon \begin{scope}[shift={(10.7,4.15)}, ifsiRule, line width=1.1pt] \draw (-0.55,-0.34) .. controls (-0.32,-0.54) and (0.17,-0.54) .. (0.34,-0.24); \draw (-0.55,-0.34) -- (-0.55,-0.06) -- (-0.05,-0.06); \draw (0.11,0.22) circle (0.22); \draw (0.02,0.22) -- (0.2,0.22); \end{scope} % ============ BOTTOM-RIGHT: Islamic Insurance ============ \node[anchor=west, text=ifsiOrange, font=\sffamily\bfseries\fontsize{50}{50}\selectfont] at (28.4,3.85) {13.9\%}; \draw[ifsiRule, line width=0.7pt] (28.05,3.05) -- (28.05,4.65); \node[anchor=north east, text=ifsiDark, align=right, font=\sffamily\fontsize{18}{20}\selectfont] at (27.7,5.6) {Islamic\\[2pt] Insurance\\[2pt] YoY Growth}; \node[anchor=north east, text=ifsiDark, font=\sffamily\bfseries\fontsize{17}{17}\selectfont] at (27.7,2.85) {1.6\% of IFSI}; % umbrella icon \begin{scope}[shift={(23.3,4.15)}, ifsiRule, line width=1.1pt] \draw (-0.54,0.06) .. controls (-0.54,0.46) and (0.54,0.46) .. (0.54,0.06); \draw (-0.54,0.06) .. controls (-0.35,0.24) .. (-0.18,0.06); \draw (-0.18,0.06) .. controls (0,0.24) .. (0.18,0.06); \draw (0.18,0.06) .. controls (0.35,0.24) .. (0.54,0.06); \draw (0,0.06) -- (0,-0.43); \draw (0,-0.43) .. controls (-0.18,-0.43) and (-0.18,-0.61) .. (0,-0.61); \draw (0.43,-0.1) circle (0.15); \node[font=\small] at (0.43,-0.1) {\$}; \end{scope} % ============ CENTRE BLOCK ============ \node[text=ifsiNavy, font=\sffamily\bfseries\fontsize{58}{58}\selectfont] at (17,10.9) {USD 4.40tn}; \node[text=ifsiNavy, font=\sffamily\fontsize{27}{27}\selectfont] at (17,9.35) {Total IFSI Assets Q3 2025}; \draw[fill=ifsiNavy, draw=none, rounded corners=17pt] (14.3,7.9) rectangle (19.7,8.75); \node[text=white, font=\sffamily\bfseries\fontsize{20}{20}\selectfont] at (17,8.325) {+13.4\% YoY}; \end{tikzpicture} \end{document} It gives the following: I would like to get the exact curves and ribbon effects on for each arrow. What I am missing and how I can create arrow curves and ribbon effects. Any advice or support would be greatly appreciated.

I would like to put a hat under a symbol. I have the following solution right now: \NewDocumentCommand{\underhat}{m}{\underset{\widehat{}}{#1}} This looks correct, except that tex considers this symbol to extend much further below the baseline than it visually does. So for example: \documentclass{article} \usepackage{amsmath} \NewDocumentCommand{\underhat}{m}{\underset{\widehat{}}{#1}} \begin{document} $\left(\underhat{x}\right)+\left(x\right)$ \end{document} looks absolutely bizarre, with the parentheses seemingly three times the height of the visible content. But more generally this creates spacing issues every time it is used. Is there some way to avoid this spacing issue?

I'm writing a text and I'd like to quote a small rhyme in the middle of my paragraphs. I'd like it for the rhyme to be centered and specifically for all its verses to occupy the same length (that is, for the rhyme to look like a square basically, margins-wise, instead of a line followed by a longer line, then a shorter one, etc.). What I'd been writing till now was something like \begin{center} \textit{Littera gesta docet;} \\ \textit{quid credas Allegoria.} \\ \textit{Moralis quid agas;} \\ \textit{quo tendas, Anagogia} \end{center}`. This, as I said, doesn't give me what I want, for, say, the second line ends up longer than the first. I'd like it for the whole rhyme to have "margins," as long as its longest line, and have the other, shorter lines, perhaps stretched just a tiny bit so that they all fit this length. (Normally this might not be all that desirable, but since all the lines of this rhyme don't differ that much in length, I figured it wouldn't look all that bad visually speaking.)

Following up on the answer given here about how to vertically shift the label from the showlabels package, I'm wondering is there a way to not just shift the label but to also have it "take up space" so that it doesn't overlap with other elements? I don't really explain it very well, but ideally it wouldn't just push the label down but also reserve space, so that the "Lorem ipsum..." would also be pushed down a bit. \documentclass[12pt]{article} \usepackage[math]{blindtext} \usepackage{amsmath} \usepackage[inline]{showlabels} \renewcommand{\showlabelfont}{\scriptsize\ttfamily} \renewcommand{\showlabelsetlabel}[1]{\raise-8ex\hbox{\fbox{\showlabelfont #1}}} \begin{document} \blindtext \begin{equation}\label{eq:some-long-formula-name} e^{i\phi}=\cos\phi+i\sin\phi, \qquad e^{i\pi}+1=0, \qquad \lim\limits_{n\to\infty}\left(1+\frac1n\right)^n=e \end{equation} \blindtext \end{document}

\documentclass{article} \usepackage{geometry,pgfkeys,fancyhdr} \pagestyle{fancy} \pgfkeys{/page/.cd, marginless/.code={ \newdimen\oldparindent% \oldparindent=\parindent% \setlength{\parindent}{0pt}% \newif\ifparindentchanged\parindentchangedtrue }, restore/.code={ \restoregeometry \pagestyle{fancy} \ifdefined\ifparindentchanged \ifparindentchanged \parindent=\oldparindent \parindentchangedfalse \fi% \fi% } } \newcommand\setpage[1][]{ \pgfkeys{/page/.cd,#1} } \begin{document} \newgeometry{margin=0pt,nohead,nofoot} \parindent0pt \pagestyle{empty} first page \setpage[restore] second page \end{document} Running this code causes this error: ERROR: Extra \fi. --- TeX said --- \pgfkeys@unpack ...else \pgfkeys@case@one \fi \fi l.32 \setpage[restore] Though the logical switch \ifparindentchanged has not been defined when doing \setpage[restore], I think it would do nothing about \parindent rather than an error. Why? How to correct it?

Consider the following example: \DocumentMetadata{%uncompress, language = en-US, % pdfversion = 2.0, % pdfstandard = {ua-2, A-4f}, % tagging = on, % tagging-setup = {math/setup=mathml-SE, extra-modules={verbatim-mo}} % } \documentclass{article} %\usepackage{mathtools} % optional \begin{document} \[ {% \begin{pmatrix} 1 & 2 \\ 3 & 4 \end{pmatrix}% }^{2} \] \end{document} The document compiles just fine. (Using LuaLaTeX, in TeXLive installation, up-to-date as of September 10, 2026.) When I open the compiled .pdf in the free version of Adobe Reader (up-to-date, version 26.002.21901), and use the NVDA screen reader (also free, also up-to-date, version 2026.2.0.57664), NVDA reads this aloud as: temp name of the two by two matrix row one: one, two row two: three, four squared Question I am not sure where the phrase "temp name of" is coming from: is it a bug, my own user error, or intended behavior? (If it is a bug, where should it be reported?) Notes If I remove the exponent on the matrix, then the phrase "temp name of" is no longer spoken aloud. It's possible that other combinations of pdf viewer + screen reader might give better results--recommendations are welcome. (I'm really pretty happy with this reading, but it would be even better if the phrase "temp name of" were omitted.)

I hope you get this since I'm really bad at explaining. I get this LaTeX code from IEEE, and it only has 6 authors on the template. I am setting this since I'm transferring our research, and we are 8 authors. The thing is, the spacing is really off, and I want to align it in the spaces that the 1st-6th author, like the two spaces between the authors. PS: IEEE Conference template was the provided template given to us. I actually don't know why also. \documentclass[conference]{IEEEtran} \IEEEoverridecommandlockouts % The preceding line is only needed to identify funding in the first footnote. If that is unneeded, please comment it out. \usepackage{cite} \usepackage{amsmath,amssymb,amsfonts} \usepackage{algorithmic} \usepackage{graphicx} \usepackage{textcomp} \usepackage{xcolor} \def\BibTeX{{\rm B\kern-.05em{\sc i\kern-.025em b}\kern-.08em T\kern-.1667em\lower.7ex\hbox{E}\kern-.125emX}} \begin{document} \title{Conference Paper Title*\\ {\footnotesize \textsuperscript{*}Note: Sub-titles are not captured in Xplore and should not be used} \thanks{Identify applicable funding agency here. If none, delete this.} } \author{\IEEEauthorblockN{1\textsuperscript{st} Given Name Surname} \IEEEauthorblockA{\textit{dept. name of organization (of Aff.)} \\ \textit{name of organization (of Aff.)}\\ City, Country \\ email address or ORCID} \and \IEEEauthorblockN{2\textsuperscript{nd} Given Name Surname} \IEEEauthorblockA{\textit{dept. name of organization (of Aff.)} \\ \textit{name of organization (of Aff.)}\\ City, Country \\ email address or ORCID} \and \IEEEauthorblockN{3\textsuperscript{rd} Given Name Surname} \IEEEauthorblockA{\textit{dept. name of organization (of Aff.)} \\ \textit{name of organization (of Aff.)}\\ City, Country \\ email address or ORCID} \and \IEEEauthorblockN{4\textsuperscript{th} Given Name Surname} \IEEEauthorblockA{\textit{dept. name of organization (of Aff.)} \\ \textit{name of organization (of Aff.)}\\ City, Country \\ email address or ORCID} \and \IEEEauthorblockN{5\textsuperscript{th} Given Name Surname} \IEEEauthorblockA{\textit{dept. name of organization (of Aff.)} \\ \textit{name of organization (of Aff.)}\\ City, Country \\ email address or ORCID} \and \IEEEauthorblockN{6\textsuperscript{th} Given Name Surname} \IEEEauthorblockA{\textit{dept. name of organization (of Aff.)} \\ \textit{name of organization (of Aff.)}\\ City, Country \\ email address or ORCID} \and \IEEEauthorblockN{7\textsuperscript{th} Given Name Surname} \IEEEauthorblockA{\textit{dept. name of organization (of Aff.)} \\ \textit{name of organization (of Aff.)}\\ City, Country \\ email address or ORCID} \and \IEEEauthorblockN{8\textsuperscript{th} Given Name Surname} \IEEEauthorblockA{\textit{dept. name of organization (of Aff.)} \\ \textit{name of organization (of Aff.)}\\ City, Country \\ email address or ORCID} } \maketitle \end{document}

I am writing a document using XeLaTeX and I use fontspec with Linux Libertine O as the main font. When I use small caps (\textsc), the text looks correct in the compiled document, but if I copy and paste the text, the characters K and R are uppercase and the rest lowercase. This is what it looks like in the compiled document: This is what the text looks like if I copy and paste it somewhere else: I would like to know what causes this and if there is any way to unify it, either all uppercase or all lowercase. \documentclass{article} \usepackage{fontspec} \setmainfont{Linux Libertine O} \begin{document} \textsc{abcdefghijklmnopqrstuvwxyz} \end{document}

Here below is my test example with exam-zh-choices(by texdoc exam-zh, that is the manual): \documentclass{article} \usepackage{lua-visual-debug} \usepackage{graphicx} \usepackage[export]{adjustbox} \usepackage{lipsum} \usepackage{exam-zh-choices} \begin{document} \section{Example A} \lipsum[1][1-2]\par\noindent \begin{minipage}[t]{.6\linewidth}% \begin{choices} \item AAAA \item BBBB \item CCCC \item DDDD \end{choices} \end{minipage}\hfill% \begin{minipage}[t]{.4\linewidth} \lipsum[2][1-2] \end{minipage} \section{Example B} \lipsum[1][1-2]\par\noindent \begin{minipage}[t]{.6\linewidth}% \begin{choices} \item AAAA \item BBBB \item CCCC \item DDDD \end{choices} \end{minipage}\hfill% \begin{minipage}[t]{.4\linewidth} \includegraphics[valign=t,width=\linewidth]{example-image-duck} \end{minipage} \section{Example C} \lipsum[1][1-2]\par\noindent \begin{minipage}[t]{.6\linewidth}% \begin{choices} \item AAAA \item BBBB \item CCCC \item DDDD \end{choices} \end{minipage}\hfill% \begin{minipage}[t]{.4\linewidth} \includegraphics[valign=T,width=\linewidth]{example-image-duck} \end{minipage} \end{document} With lua-visual-debug, the baseline was shown with different "Top": What I want, is to ellinimate the gap before choices environment: Maybe \vspace{-2ex} would works, but I wonder whether some better approaches to handle the "Top" alignment here to tweak the baseline.

As I want a client who uses a screen reader to have a nice experience, I want to somehow overwrite the alt-text(*see edit) of a whole math environment. All examples that I have seen add alt text to a figure or tikzcd etc. I have a long equation that I am spreading across multiple lines. One might use the packages Breqn or Tabstackengine to typeset this, but I don't think these generate alt-text (per https://latex3.github.io/tagging-project/tagging-status/). How do I do this? What are the complicating factors? *EDIT: I have been convinced: I must do tagging. To that end, I did basic research. Tug 2021 Frank Mittelbach’s “Taming the Beast: Advances in paragraph tagging with pdfTeX and XeTeX” PDF Days Europe 2025 Ulrike Fischer & Frank Mittelbach’s “Tagged and Accessible PDF with LaTeX — revisited” The documentation for the tagpdf research package The tagging project instructions: Using Latex to produce accessible pdf Here is a minimal working example \documentclass[letterpaper, oneside, 12pt, openany]{book} % For special alignment of math % This is very helpful for typesetting elementary algebra \usepackage{tabstackengine} \usepackage{mathtools} \DeclareMathOperator{\Conjunct}{\textup{ and }} \DeclareMathOperator{\Followedby}{;} \begin{document} %visual ouptut \[ (P \Followedby Q) \Followedby R = \left\{ x \in S \middle| \Centerstack[l]{% $P_1(x) \Conjunct $ \\$P_2(x) \Conjunct $ \\$P_3(x)$}\right\} \] %alt text should be this \[ (P \Followedby Q) \Followedby R = \left\{ x \in S \middle| P_1(x) \Conjunct P_2(x) \Conjunct P_3(x)\right\} \] \end{document} and the output

​Hello everyone, ​I am looking for a clean way to format block quotes in my document, specifically ensuring that the vertical spacing remains completely symmetric and matches the surrounding text. ​My main document uses a line spacing of 1.5 (via the setspace package) and a standard font size of 11pt. ​For my block quotes, I need a custom environment that applies the following formatting: ​ 1 cm indentation on both the left and right sides ​ A smaller font size of 10pt Single line spacing Italic text ​What I am trying to achieve: I am looking for a clean way to define this environment. Crucially, I want the vertical space exactly above and below the quote to perfectly match the normal text's line spacing (the 1.5 spacing of the main text). ​How can I define this custom environment? ​Any help is greatly appreciated!!!!!! \documentclass[11pt,a4paper]{article} \usepackage{setspace} \usepackage{quoting} \usepackage{lipsum} \newenvironment{block}{% \par\setstretch{1} \begin{quoting}[font={itshape, small},indentfirst=false,leftmargin=1cm] }{\end{quoting}} \setstretch{1.5} \begin{document} \lipsum[1][1-4] \begin{block} \lipsum[2][1-5] \end{block} \lipsum[3] \end{document}

I'm having difficulty understanding the use of the ! operator in xcolor: as I understand it from reading around (including xcolor documentation, but not the code itself): \colorlet{newcolour}{red!60} creates a color which is 60% red and the remainder (40% I guess) white. OK. \colorlet{newcolour}{red!60!blue} is 60% red and 40% blue - is that right? But why is this different from \colorlet{newcolour}{red!60!blue!40}? Here is a MWE, and all 4 colours ought to be the same (from my understanding, which is obviously wrong). Can someone explain? \documentclass{standalone} \usepackage{xcolor} \colorlet{mycolorA}{red!60!blue} \colorlet{mycolorB}{red!60!blue!40!} \colorlet{mycolorC}{red!60!blue!40!green!} \colorlet{mycolorD}{red!60!blue!40!green!0} \begin{document} \Large \parbox{0.75\textwidth}{ Here is the test: \color{mycolorA} mycolorA = \{red!60!blue\} is this \color{mycolorB} mycolorB = \{red!60!blue!40\} is this \color{mycolorC} mycolorC = \{red!60!blue!40!green\} is this \color{mycolorD} mycolorD = \{red!60!blue!40!green!0\} is this \color{black} the colorD line, but in black, reads: \\ mycolorD = \{red!60!blue!40!green!0\} is this (it's invisible!) } \end{document} Giving

I have the following code: \documentclass{article} \usepackage{char2path} \begin{document} x \end{document} It works fine with TL26(the frozen version in March, or says with Overleaf,TL26), but complained that with the lastest one: ! Package pgfkeys Error: I do not know the key '/tikz/cs/point/.storein', to wh ich you passed '\tikz@cs@point ', and I am going to ignore it. Perhaps you miss pelled it. See the pgfkeys package documentation for explanation. Type H <return> for immediate help. ... l.410 \tikzset{cs/point/.store in=\tikz@cs@point} % ? I opened the issue here, but I was wonder what is changed here, to prevent the handler /.store in was used in the package? It looks like a breaking change for me. Here below are two lists of the \listfiles: List 1. worked. *File List* article.cls 2025/01/22 v1.4n Standard LaTeX document class size10.clo 2025/01/22 v1.4n Standard LaTeX file (size option) char2path.sty 2025-07-28 v1.0.0 A LaTeX package that converts characters into TikZ paths tikz.sty 2025-08-29 v3.1.11a (3.1.11a) pgf.sty 2025-08-29 v3.1.11a (3.1.11a) pgfrcs.sty 2025-08-29 v3.1.11a (3.1.11a) pgfrcs.code.tex pgfcore.sty 2025-08-29 v3.1.11a (3.1.11a) graphicx.sty 2026-05-17 v1.2e Enhanced LaTeX Graphics (DPC,SPQR) keyval.sty 2026-05-17 v1.15 key=value parser (DPC) graphics.sty 2026-05-17 v1.4h Standard LaTeX Graphics (DPC,SPQR) trig.sty 2023/12/02 v1.11 sin cos tan (DPC) graphics.cfg 2016/06/04 v1.11 sample graphics configuration pdftex.def 2025/09/29 v1.2d Graphics/color driver for pdftex pgfsys.sty 2025-08-29 v3.1.11a (3.1.11a) pgfsys.code.tex pgfsyssoftpath.code.tex 2025-08-29 v3.1.11a (3.1.11a) pgfsysprotocol.code.tex 2025-08-29 v3.1.11a (3.1.11a) xcolor.sty 2024/09/29 v3.02 LaTeX color extensions (UK) color.cfg 2016/01/02 v1.6 sample color configuration mathcolor.ltx pgfcore.code.tex pgfcomp-version-0-65.sty 2025-08-29 v3.1.11a (3.1.11a) pgfcomp-version-1-18.sty 2025-08-29 v3.1.11a (3.1.11a) pgffor.sty 2025-08-29 v3.1.11a (3.1.11a) pgfkeys.sty pgfkeys.code.tex pgfmath.sty pgfmath.code.tex pgffor.code.tex tikz.code.tex etoolbox.sty 2025/10/02 v2.5m e-TeX tools for LaTeX (JAW) l3backend-pdftex.def 2026-02-18 L3 backend support: PDF output (pdfTeX) supp-pdf.mkii epstopdf-base.sty 2020-01-24 v2.11 Base part for package epstopdf epstopdf-sys.cfg 2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Live *********** List 2. Not worked... *File List* article.cls 2025/01/22 v1.4n Standard LaTeX document class size10.clo 2025/01/22 v1.4n Standard LaTeX file (size option) char2path.sty 2025-07-28 v1.0.0 A LaTeX package that converts characters int o TikZ paths tikz.sty 2026-08-01 v3.1.12 (3.1.12) pgf.sty 2026-08-01 v3.1.12 (3.1.12) pgfrcs.sty 2026-08-01 v3.1.12 (3.1.12) pgfutil-common.tex pgfutil-latex.def pgfrcs.code.tex pgf.revision.tex pgfcore.sty 2026-08-01 v3.1.12 (3.1.12) graphicx.sty 2026-05-17 v1.2e Enhanced LaTeX Graphics (DPC,SPQR) keyval.sty 2026-05-17 v1.15 key=value parser (DPC) graphics.sty 2026-05-17 v1.4h Standard LaTeX Graphics (DPC,SPQR) trig.sty 2023/12/02 v1.11 sin cos tan (DPC) graphics.cfg 2016/06/04 v1.11 sample graphics configuration pdftex.def 2025/09/29 v1.2d Graphics/color driver for pdftex pgfsys.sty 2026-08-01 v3.1.12 (3.1.12) pgfsys.code.tex pgfkeys.code.tex pgfkeyslibraryfiltered.code.tex pgf.cfg 2026-08-01 v3.1.12 (3.1.12) pgfsys-pdftex.def 2026-08-01 v3.1.12 (3.1.12) pgfsys-common-pdf.def 2026-08-01 v3.1.12 (3.1.12) pgfsyssoftpath.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfsysprotocol.code.tex 2026-08-01 v3.1.12 (3.1.12) xcolor.sty 2024/09/29 v3.02 LaTeX color extensions (UK) color.cfg 2016/01/02 v1.6 sample color configuration mathcolor.ltx pgfcore.code.tex pgfmath.code.tex pgfmathutil.code.tex pgfmathparser.code.tex pgfmathfunctions.code.tex pgfmathfunctions.basic.code.tex pgfmathfunctions.trigonometric.code.tex pgfmathfunctions.random.code.tex pgfmathfunctions.comparison.code.tex pgfmathfunctions.base.code.tex pgfmathfunctions.round.code.tex pgfmathfunctions.misc.code.tex pgfmathfunctions.integerarithmetics.code.tex pgfmathcalc.code.tex pgfmathfloat.code.tex pgfint.code.tex pgfcorepoints.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcorepathconstruct.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcorepathusage.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcorescopes.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcoregraphicstate.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcoretransformations.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcorequick.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcoreobjects.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcorepathprocessing.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcorearrows.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcoreshade.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcoreimage.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcoreexternal.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcorelayers.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcoretransparency.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcorepatterns.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcorerdf.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfmoduleshapes.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfmoduleplot.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfcomp-version-0-65.sty 2026-08-01 v3.1.12 (3.1.12) pgfcomp-version-1-18.sty 2026-08-01 v3.1.12 (3.1.12) pgffor.sty 2026-08-01 v3.1.12 (3.1.12) pgfkeys.sty pgfkeys.code.tex pgfmath.sty pgfmath.code.tex pgffor.code.tex tikz.code.tex pgflibraryplothandlers.code.tex 2026-08-01 v3.1.12 (3.1.12) pgfmodulematrix.code.tex 2026-08-01 v3.1.12 (3.1.12) tikzlibrarytopaths.code.tex 2026-08-01 v3.1.12 (3.1.12) etoolbox.sty 2025/10/02 v2.5m e-TeX tools for LaTeX (JAW) tikzlibrarypatterns.code.tex 2026-08-01 v3.1.12 (3.1.12) pgflibrarypatterns.code.tex 2026-08-01 v3.1.12 (3.1.12) tikzlibraryfadings.code.tex 2026-08-01 v3.1.12 (3.1.12) pgflibraryfadings.code.tex 2026-08-01 v3.1.12 (3.1.12) tikzlibrarycalc.code.tex 2026-08-01 v3.1.12 (3.1.12) l3backend-pdftex.def 2026-08-10 L3 backend support: PDF output (pdfTeX) supp-pdf.mkii epstopdf-base.sty 2020-01-24 v2.11 Base part for package epstopdf epstopdf-sys.cfg 2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Live *********** Edit I found a simpler version: \documentclass{article} \usepackage{tikz} \ExplSyntaxOn \usetikzlibrary{calc} \ExplSyntaxOff \begin{document} x \end{document} My follow-up question is, it looks like a breaking change for me... Would this change break plenty of packages? Because before 2026, maybe March(?) It's allowed to put \usetikzlibrary{calc} within .dtx(or expl3 environment,which leave off <space>) directly? But now not allowed? The most immediate impression seems to be that the author of dtx needs to make an additional protective switch due to the use of \usetikzlibrary{calc}? I don't think that is convenient....

The code was taken from the classical soluion to prevent a PDF viewer from copying the line number by Werner, interesting, it raised an error with latest TL26. \documentclass{article} \usepackage{xcolor}% http://ctan.org/pkg/xcolor \usepackage{listings}% http://ctan.org/pkg/listings \usepackage{accsupp}% http://ctan.org/pkg/accsupp \renewcommand{\thelstnumber}{% Line number printing mechanism \protect\BeginAccSupp{ActualText={}}\arabic{lstnumber}\protect\EndAccSupp{}% } \lstset { language={[LaTeX]TeX}, numbers=left, numbersep=1em, numberstyle=\tiny, frame=single, framesep=\fboxsep, framerule=\fboxrule, rulecolor=\color{red}, xleftmargin=\dimexpr\fboxsep+\fboxrule\relax, xrightmargin=\dimexpr\fboxsep+\fboxrule\relax, breaklines=true, basicstyle=\small\tt, keywordstyle=\color{blue}, commentstyle=\color[rgb]{0.13,0.54,0.13}, backgroundcolor=\color{yellow!10}, tabsize=2, columns=flexible, morekeywords={maketitle}, } \begin{document} \begin{lstlisting} \documentclass{article} \usepackage{listings} \title{Sample Document} \author{John Smith} \date{\today} \begin{document} \maketitle Hello World! % This is a comment. \end{document} \end{lstlisting} \end{document} But it complained the following: ! Use of \lst@UseFamily@ doesn't match its definition. \@ifnextchar ...eserved@d =#1\def \reserved@a {#2} \def \reserved@b {#3}\futu... l.33 \d ocumentclass{article} ? What happened here? And how to fix this? Edit I try with different versions on Overleaf, TL24 gives no error, but TL25 and TL26 complained the error shown above.

I am quite new to LuaLaTex and was thinking that it could help me with the folowing, I am using titling package together with \addcontentsline{toc}... to add multiple articles into one file. The problem is that in \addcontentsline{toc}... I pass the variable \@author with multiple \thankscommands in it, and that looks to cause problem when making the TOC. Furthermore I don't want those thanks to come on my TOC anyway. So is there a way to put in my \addcontentsline{toc}... the variable \@author where \thankscommands are stripped away using LuaLatex ? Is there a better solution in standard latex ? \documentclass{report} \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \usepackage[english]{babel} \usepackage{xcolor} % defines the named colours (purple, violet, ...) used below \usepackage{hyperref} \hypersetup{ colorlinks=true,urlcolor=purple,linkcolor=blue,citecolor=violet,linktoc=all,breaklinks=true,hidelinks=true } \usepackage{subfiles} \usepackage{titlesec} %\titleformat{\chapter}[⟨shape⟩]{⟨format⟩}{⟨label ⟩}{⟨sep⟩}{⟨before-code⟩}[⟨after-code⟩] \titleformat{\chapter}[display] {\huge\filcenter\bfseries}{}{0ex} {}[] \titlespacing*{\chapter}{0ex}{0ex}{3ex} \counterwithout{section}{chapter} \makeatletter \usepackage{titling} \pretitle{ \phantomsection \chapter* } \newcommand{\newand}{, } \posttitle{ \setcounter{section}{0} {\let\thanks\relax \let\and\newand \let\footnotemark\relax \let\footnoterule\relax \addcontentsline{toc}{chapter}{\protect\numberline{}\@title \protect\newline by \itshape\@author} } } \predate{} \postdate{\hrulefill\\} \newcounter{savedpage} \makeatother \let\omaketitle\maketitle \renewcommand{\maketitle}{ \setcounter{savedpage}{\value{page}} {\let\newpage\relax\omaketitle\vspace{-7em}} \thispagestyle{empty} \setcounter{page}{\value{savedpage}} } \setcounter{tocdepth}{0} \begin{document} { \hypersetup{linkcolor=black} \tableofcontents } \subfileinclude{subfile.tex} \end{document} subfile.tex \documentclass[main]{subfiles} \begin{document} \title{Title} \author{AuthorA\thanks{afilliation1}\and AuthorB\thanks{affiliationB}} \date{1234} \maketitle blablabla \end{document}

Here's the "minimal" example. I'm working on an Arabic-to-English dictionary, so I need English, Arabic and Phonetic Alphabet. The parts of the example that involve Arabic are commented out, and apparently don't affect the underdot problem. \documentclass[notitlepage]{article} \usepackage[english,arabic]{babel} % \usepackage{luabidi} \usepackage{titlesec} \usepackage{textcomp} \usepackage{fontspec} \babelfont[*english, *arabic]{rm}{Times New Roman} \begin{document} \pagestyle{empty} % \paragraph{\RLE{أظرَف}} blah blah. % \RLE{ ماأَظرفِك... مِالصّين.} [ma\d{ð}irfik ... ʔi\d{s}\d{s}ħan ... miṣṣiːn.] Blah blah. \end{document} I'm using LuaLaTeX. Note that the example uses both "ṣ" and "\d{s}", and these are rendered correctly, but the dot for ð appears under the preceding "a".

In the example below the horizontal centering (\tabcolsep=1pt) works fine but how to do the same vertically for the rotated text "Donnes" and for the other lines (no descenders: depth should be set to 0). There should be a gap of (1pt) above and below the fboxes. \documentclass{article} \usepackage{boldline} \usepackage[utf8]{inputenc} \usepackage{rotating} \fboxrule=0.01pt % hair rule \fboxsep=-\fboxrule % don't add to the box dimensions \newcommand{\myTurnA}[1]{\fbox{\rotatebox[origin=c]{90}{#1}}} \newcommand{\myTurnB}[1]{\fbox{\rotatebox[origin=c]{-90}{#1}}} \newcommand{\myItem}[1]{\fbox{#1}} \begin{document} \begin{center} \begin{table} \centering \setlength{\tabcolsep}{1pt} \setlength{\extrarowheight}{0pt} \begin{tabular}{V{3}cV{3}c|c|c|cV{3}} \hlineB{3} \myTurnA{Tour} & \myTurnA{Table} & \myTurnB{Donnes} & \myTurnB{Vs} & \myTurnB{Relais} \\ \hlineB{3} \myItem{1} & \myItem{1} & \myItem{4-6} & \myItem{EO 2} & \myItem{-}\\ \hline \myItem{2} & \myItem{21} & \myItem{4-6} & \myItem{EO 22} & \myItem{7}\\ \hlineB{3} \end{tabular} \end{table} \end{center} \end{document}

The following code compiles correctly, but there is a warning in the log file: Package nicematrix Warning: Columns not used. (nicematrix) The preamble of your environment {NiceTabular} is (nicematrix) '| >{$}c<{$} | >{$}l<{$} |'. It announces 4 (nicematrix) columns but you only used 2. The columns that you (nicematrix) did not used won't be created. You won't have (nicematrix) similar warning till the end of the document. The code as below: \documentclass{standalone} \usepackage{nicematrix} \begin{document} \begin{NiceTabular}{| >{$}c<{$} | >{$}l<{$} |} \text{Variable} & \text{Formula} \\ \hline x & g^3(y) = \sqrt{y} \end{NiceTabular} \end{document}

Expected result: Except for the order of composition. Need help for: middle arrows intersection regions with color and labels adding cutting curve in the most right ellipse \documentclass[tikz,border=1cm,12pt]{standalone} \usepackage{fouriernc} \usetikzlibrary{calc,positioning,shapes.geometric} \tikzset{ elps/.style 2 args={ draw, ellipse, minimum width=#1, minimum height=#2 }, node distance=3cm, >=latex } \begin{document} \begin{tikzpicture} \node(Df) [elps={3cm}{5cm},label={above:$D_f$}] {}; \node(Rf) [elps={3cm}{5cm},right=of Df,label={above:$R_f$}] {}; \node(fiDg) [elps={3cm}{5cm},below=-2cm of Df,label={below:$f^{-1}\left(D_g\right)$}] {}; \node(Dg) [elps={3cm}{5cm},below=-2cm of Rf,label={below:$D_g$}] {}; \node(Rg) [elps={3cm}{5cm},right=of Dg,label={below:$R_g$}] {}; \draw[->] (Df) to[bend left=30] node[above] {$f$} (Rf); \draw[->] (Dg) to[bend left=30] node[above] {$g$} (Rg); \draw[->] (Dg) to[bend left=30] node[above] {$f^{-1}$} (fiDg); \end{tikzpicture} \end{document}

In memoir, I noticed that when I use \linespread command, the placement of \usepackage[T1]{fontenc} affects the page layout. Consider the following MWE: \documentclass[a4paper,10pt]{memoir} \usepackage[T1]{fontenc} \usepackage[osf]{newpx} \linespread{1.05} \usepackage{lipsum} \checkandfixthelayout \begin{document} \typeout{The value of baselineskip is \the\baselineskip} \typeout{The value of topskip is \the\topskip} \typeout{The value of parskip is \the\parskip} \lipsum[1-6] \end{document} The relevant lines in the output of \checkandfixthelayout are: Text height and width: 598pt by 341pt Upper and lower margins: 125.33748pt and 121.70937pt If I change the order of the lines to \usepackage[osf]{newpx} \linespread{1.05} \usepackage[T1]{fontenc} I get Text height and width: 602.20172pt by 341pt Upper and lower margins: 125.33748pt and 117.50764pt The values of \baselineskip, \topskip and \parskip are not changed. Thus, the order affects the text height and the lower margin (with the sum being unaffected). If I remove the \linespread command, the order of using fontenc and newpx makes no difference. What's the explanation for this behaviour? (Background: I use \linespread{1.05} because this is what was recommended by the LaTeX font catalogue for URW Palladio, which is the font I used before switching to newpx in response to @egreg's answer. The usage example for URW Palladio had the order \usepackage{mathpazo}, \linespread{1.05} and \usepackage[T1]{fontenc}. I noticed the effect of the order when I tried to find the cause for different page layouts after switching from mathpazo to newpx.)

By the following codes, I want my third page to restore geometry to the set of first page(margin=3in) except that top size changes to 0.1in(\restorgeometry and then \newgeometry), that is to say, the left/right/bottom margin is 3in, and the top margin is 0.1in. The output shows that the left/right margin size is different from both the first and second page. I'm confused. what value on earth dees the second \newgeometry inherit from? And how to make some small changes on base of original page set? \documentclass[a4paper]{article} \usepackage{geometry} \geometry{showframe} \geometry{margin=3in} \begin{document} first page, margin=3in\clearpage \newgeometry{margin=1in} second page, margin=1in\clearpage \restoregeometry \newgeometry{top=0.1in} third page, inheritance of left/right margin from the first page(by \string\restorgeometry) is wanted, but seems from neither first nor second page. \end{document}

I use the mismath package, which among other math operators, defines \card, but with a definition different from the one I want, which is simply: \DeclareMathOperator{\card}{card} To effect this substitute definition, I tried the two methods given by @egreg in https://tex.stackexchange.com/a/175272/13492, but neither works as desired. This source shows both methods: % !TEX program = lualatex \NeedsTeXFormat{LaTeX2e}[2026-06-01] \documentclass{article} \usepackage{mismath} \usepackage{amsfonts} %% Need different def of \card from mismath % Method 1 (egreg) \let\card\relax% Different \card defined in mismath! \DeclareMathOperator{\card}{card} % Method 2 (egreg) %% Define \RedeclareMathOperator \makeatletter \newcommand\RedeclareMathOperator{% \@ifstar{\def\rmo@s{m}\rmo@redeclare}{\def\rmo@s{o}\rmo@redeclare}% } % this is taken from \renew@command \newcommand\rmo@redeclare[2]{% \begingroup \escapechar\m@ne\xdef\@gtempa{{\string#1}}\endgroup \expandafter\@ifundefined\@gtempa {\@latex@error{\noexpand#1undefined}\@ehc}% \relax \expandafter\rmo@declmathop\rmo@s{#1}{#2}} % This is just \@declmathop without \@ifdefinable \newcommand\rmo@declmathop[3]{% \DeclareRobustCommand{#2}{\qopname\newmcodes@#1{#3}}% } \@onlypreamble\RedeclareMathOperator \makeatother % Uncomment next line for Method 2 %\RedeclareMathOperator{\card}{card} \begin{document} We have $\card(\mathbb{Z}) = \aleph_{0}$. \end{document} The first method, using \let\card\relax, gives the desired output, but produces this warning: Package mismath Warning: Command \card already exists (mismath) and will not be redefined. The second method (comment out that \let... line and uncomment the \RedeclareMathOperator line) does not allow compilation, causing the error: /card.tex:33: LaTeX Error: \card undefined. Is there some satisfactory way to do this still using \DeclareMathOperator or a variant thereof? Note that the mismath package makes its math operator definition thusly: \AtBeginDocument{\mm@macro{card}{\abs}} where the package defines: \newcommand\mm@macro[2]{ \@ifundefined{#1}{ \expandafter\def\csname #1\endcsname{#2} }{\mm@warning{#1}} }

Consider the following example: \DocumentMetadata{%uncompress, language = en-US, % pdfversion = 2.0, % pdfstandard = {ua-2, A-4f}, % tagging = on, % tagging-setup = {math/setup=mathml-SE, extra-modules={verbatim-mo}} % } \documentclass{ltx-talk} %\usepackage{amsthm} % optional \newtheorem{thrm}{Theorem} \newtheorem{prop}{Proposition} % separate counters for Theorems and Propositions %\newtheorem{prop}[thrm]{Proposition} % shared counter; raises error \begin{document} \begin{frame} \begin{thrm} The limit of a sum is the sum of the limits. \end{thrm} \begin{prop} The limit of a difference is the difference of the limits. \end{prop} \end{frame} \end{document} This compiles as expected, and shows Theorem 1 and Proposition 1. Now suppose I want Theorems and Propositions to share a counter, so that I would get Theorem 1 followed by Proposition 2. In the past I have done this by replacing \newtheorem{prop}{Proposition} by \newtheorem{prop}[thrm]{Proposition}. (In the above example, comment out one line and un-comment another.) Unfortunately this raises an error for me: ! Undefined control sequence. <argument> \exp:not:n {[{thrm}]} l.17 The shared counter syntax shown above works fine for me in article class documents, and I'm pretty sure it worked for me in an ltx-talk document, as of at least July 2, 2026 (so after the 2026-06-01 LaTeX kernel release). (I am using LuaLaTeX, in a TeXLive installation, up-to-date as of September 7, 2026.) How can I make separate theorem environments share a counter in ltx-talk?

It is needed to implement Hairpins decrescendo with custom horizontal width in Musixtex. The basic code is as follow: \documentclass[12pt]{article} % ========== FORMATO DE PÁGINA: A4 VERTICAL ========== \usepackage[a4paper,portrait,left=0.4cm,right=0.2cm,top=0.2cm,bottom=0.2cm]{geometry} \pagestyle{empty} % ========== PAQUETES ========== \usepackage{tikz} \usetikzlibrary{quotes} \usetikzlibrary{shapes} \usetikzlibrary{fit,positioning} \usetikzlibrary{arrows.meta} \usetikzlibrary{decorations} \usepackage{amsmath} \usepackage{xcolor} \usetikzlibrary{calc} \usepackage{musicography} \usepackage{musixtex} \input musixper \input musixlyr \input musixjt %\input musixps \xdefinecolor{red-undar}{RGB}{179,35,79} \begin{document} \begin{music} \centerline{\Bigtype R\,A\,Í\,C\,E\,S\,\,\,\,\,\,\,D\,E\,L\,\,\,\,\,\,\,F\,E\,S\,T\,E\,J\,O} \vskip1ex % ========== CONFIGURACIÓN GLOBAL ========== \parindent15mm% \staffbotmarg9\Interligne \font\B=phvb8t at 12pt \font\A=phvb8t at 10pt \A% \setsongraise1{7mm} \setstaffs1{1} \setlines{1}{5} \setclef{1}{\treble} \setclefsymbol{1}{\drumclef}% \generalmeter{\meterfrac{12}8}% \setname1{% \begin{tikzpicture}[baseline] \node[align=center, font=\A, inner sep=0pt, yshift=4mm] {Cajón\\Peruano}; \end{tikzpicture}% } %\nobarnumbers% \systemnumbers% \def\raisebarno{5\internote}% % acerca el número al pentagrama \def\shiftbarno{-5pt}% % posición horizontal \def\writebarno{\eightrm\the\barno\barnoadd}% quita el recuadro, usa texto simple \startrule % ancho de sistema = ancho del texto de la página A4 (sin sobreancho) % ========== SISTEMA 1 (6 compases) ========== %\setcrescheight{-7\Internote} \startpiece \notes\usf p\ibu0i0\qb0{fj}\tbu0\qb0f\en%\bar \notes\ibu0i0\qb0{f}\tbu0\qb0f\ds\en%\bar \notes\ibl0i0\qb0{j}\tbl0\qb0j\ds\en%\bar \notes\ibu0i0\qb0{f}\tbu0\qb0f\ds\en\bar%Fin motivo Festejo %Inicio motivo Festejo \notes\icresc\usf p\ibu0i0\qb0{fj}\tbu0\qb0f\en%\bar \notes\ibu0i0\qb0{f}\tbu0\qb0f\ds\en%\bar \notes\ibl0i0\qb0{j}\tbl0\qb0j\ds\en%\bar \notes\ibu0i0\qb0{f}\tbu0\qb0f\ds\en\bar%Fin motivo Festejo %Inicio motivo Festejo \notes\usf p\ibu0i0\qb0{fj}\tbu0\qb0f\en%\bar \notes\ibu0i0\qb0{f}\tbu0\qb0f\ds\en%\bar \notes\ibl0i0\qb0{j}\tbl0\qb0j\ds\en%\bar \notes\ibu0i0\qb0{f}\tbu0\qb0f\ds\en\bar%Fin motivo Festejo %Inicio motivo Festejo \notes\usf p\ibu0i0\qb0{fj}\tbu0\qb0f\en%\bar \notes\ibu0i0\qb0{f}\tbu0\qb0f\ds\en%\bar \notes\ibl0i0\qb0{j}\tbl0\qb0j\ds\en%\bar \notes\ibu0i0\qb0{f}\tbu0\qb0f\ds\en% \znotes\raisebox{-20pt}{\tdecresc}\en\setdoubleBAR% \nolyr% \lyricsoff% \endpiece% \end{music} \end{document} The current output is as follow: The desired output is as follow: Note: notices that the width of the decrescendo hairpins should be at the end of the system.

At the moment i probably wont switch to lua-unicode-math but i tried it out a little and stumbled across a problem i would like to address: setting specific fonts seems not to be supported by \setmathfont. Consider the following examples \documentclass{standalone} \usepackage{fontspec} \usepackage{lua-unicode-math} \setmathfont{STIX Two Math} \setmathfont[range={scr,bfscr}, StylisticSet=1]{STIX Two Math} \begin{document} $A \mathcal{A} \mathscr{A}$ \end{document} \documentclass{standalone} \usepackage{fontspec} \usepackage{lua-unicode-math} \setmathfont{STIX Two Math} \setmathfont[version=bold]{NewCMMath-Bold} \begin{document} $A$ {\boldmath$A$} \end{document} It is clear, that in the first example, not only \symscr but also \symcal (and i would assume all fonts) are replaced by the second call of \setmathfont, while in the second example we have the same problem, where not just the bold version but all fonts are replaced by the second call. Of course, this setup (in particular the option range and version) is just copy pasted from a typical unicode-math setup and there is no reason why the \setmathfont command provided by lua-unicode-math should take the same arguments at the \setmathfont command provided by unicode-math. But considering that the documentation of lua-unicode-math is very thin at the moment and only, there is not much information available on how to configure your fonts. Thus, i choose these setups to express what i would like to do (not stating that i expect it to work like that). Thus, to my main question: what is the intended way to fine tune your font setup manually, beyond loading a pre-defined setup via \usepackage{lmu-<some provided font>}?