Bug Tracker

ID	306🔗
Submitted by:	Nicola Talbot 🦜
Date:	2025-06-15 18:31:48
Last update:	2025-06-17 13:52:46
Status	Open Sign in if you want to bump this report.
Category	datetime2
Version	1.5.7
Summary	\pdffeedback error with lualatex dvi mode

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Description

The datetime2 package fails when compiling with LuaLaTeX in DVI mode (lualatex --output-format=dvi). The error message is:

! unexpected use of \pdffeedback

The same error message occurs with direct use of the \pdffeedback primitive to obtain the PDF creation date:

\documentclass{article}
\begin{document}
Date:
\pdffeedback creationdate
\end{document}

It seems that creationdate isn't supported by \pdffeedback with the dvi output format.

A stopgap solution is to first load the luatex85 package before datetime2:

\documentclass{article}
\usepackage{luatex85}
\usepackage{datetime2}
\begin{document}
\today
\end{document}

(Note that the reason this works is because luatex85 defines \pdfcreationdate and datetime2 tests for the existence of that command before attempting to use \pdffeedback.)

The next version will switch to the newer LaTeX3 functions to avoid the use of format-dependent primitives.

MWE

Download (86B)

\documentclass{article}
\usepackage{datetime2}
\begin{document}
\today
\end{document}

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