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I am a long-time user of calendar.sty, however I am new to LuaTeX / LuaLaTeX.

I switched to LuaLaTeX so I could use Greek letters from the LuaLaTeX package unicode-math package (see link and link). The transition to LuaTeX was mostly smooth, except I noticed that bold fonts are no longer working.

The culprit seems to be the calendar.sty package. When using calendar.sty, bold fonts render correctly with PDFTeX but not with LuaTeX. Here is a MWE:

\documentclass{article}
\usepackage{fontspec}
\usepackage[inner=1.5cm,outer=1.5cm,top=2.5cm,bottom=2.5cm]{geometry}

%from https://www.latextemplates.com/template/monthly-calendar
\usepackage{calendar} % Use the calendar.sty style
\usepackage{palatino} % Use the Palatino font


\title{Test}
\author{Ethan Alvarée}
\date{July 2022}


\begin{document}
\maketitle
\section{Introduction}
Hello. I am testing \textbf{bold} fonts.
\end{document}

Here is a live Overleaf project demonstrating the issue. Any workaround ideas? Thanks in advance!

EthanAlvaree
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    remove the palatino package, that is not meant for lualatex. Use e.g. \setmainfont{texgyrepagella} instead (that is a palatino clone). – Ulrike Fischer Sep 15 '22 at 08:02

1 Answers1

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The problem is not calendar but palatino. If you look into the log-file you will see two warnings:

LaTeX Font Warning: Font shape `TU/ppl/m/n' undefined
(Font)              using `TU/lmr/m/n' instead on input line 79.

LaTeX Font Warning: Font shape `TU/ppl/b/n' undefined
(Font)              using `TU/ppl/m/n' instead on input line 81.

which together mean that the font family ppl setup by the package is not supported by lualatex and so you actually get the default Latin Modern font.

Use \setmainfont to setup your fonts, e.g. you can use the palatino clone from the tex gyre fonts with \setmainfont{texgyrepagella}.

Ulrike Fischer
  • 327,261