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I recently updated my TexLive distribution to the 2023 version, but in doing so I've started receiving a number of warnings from my tikzposter:

\documentclass{tikzposter}
%\font\nullfont=cmr10
\title{TikZTests}%
% \author{John Doe}%
% \institute{World Government}%
\begin{document}
\maketitle
\end{document}

While the compilation works:

latexmk -C  tikzposter.tex && latexmk tikzposter.tex

There are a number of annoying warnings about missing characters:

Output written on tikzposter.pdf (1 page, 39473 bytes).
Transcript written on tikzposter.log.
Latexmk: Getting log file 'tikzposter.log'
Latexmk: Examining 'tikzposter.fls'
Latexmk: Examining 'tikzposter.log'
Latexmk: Log file says output to 'tikzposter.pdf'
Latexmk: Summary of warnings from last run of *latex:
  =====Latex reported missing or unavailable character(s).
=====See log file for details.
Latexmk: ====List of undefined refs and citations:
  Missing character: There is no 1 in font nullfont!
  Missing character: There is no = in font nullfont!
  Missing character: There is no 1 in font nullfont!
Latexmk: All targets () are up-to-date

Anyone know where these come from? They only show up if the \maketitle macro is used, and is there some way to get rid of these warnings?

Xaldew
  • 113
  • Duplicate https://tex.stackexchange.com/questions/674062/tikzposter-missing-character-there-is-no-in-font-nullfont – samcarter_is_at_topanswers.xyz Apr 20 '23 at 11:20
  • @samcarter_is_at_topanswers.xyz No it is not a duplicate. That question is related to content outside of the tikzposter objects, this is related to the usage of the \maketitle. Additionally, \maketitle cannot be put inside a \node{}, making the answer to their question inapplicable to this one. – Xaldew Apr 20 '23 at 11:29
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    If you are not scaling the title, you can avoid the warning with \documentclass{tikzposter} \title{TikZTests} \makeatletter \define@key{title}{titletextscale}{} \makeatother \begin{document} \maketitle \end{document} – samcarter_is_at_topanswers.xyz Apr 20 '23 at 11:46

1 Answers1

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It is a bug in tikzposter. It uses an assignment on a macro instead of defining it.

\documentclass{tikzposter}
%\font\nullfont=cmr10
\title{TikZTests}%
% \author{John Doe}%
% \institute{World Government}%

\makeatletter
\define@key{title}{titletextscale}{\def\TP@titletextscale{#1}} %instead of \TP@titletextscale=1
\makeatletter
\begin{document}


\maketitle
\end{document}
Ulrike Fischer
  • 327,261
  • Looks like this solved it, but looking at the code (https://bitbucket.org/surmann/tikzposter/src/master/tikzposter.cls), they seem to actually be doing this already. Is MacTeX distributing a different version of tikzposter? – Xaldew Apr 20 '23 at 12:55
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    looks so, if they don't upload to ctan it won't get into the tex systems. – Ulrike Fischer Apr 20 '23 at 13:15
  • Ahh, so that's the crux. I found the issue here mentioning it as well: https://bitbucket.org/surmann/tikzposter/issues/42/ctan-does-not-have-a-recent-version – Xaldew Apr 20 '23 at 13:42