Re: How to get tagging off in new LaTeX

> On 2 Nov 2025, at 21:28, Bruno Voisin <[email protected]> wrote:
> 
> Thanks, I will use
> 
> \DocumentMetadata{tagging=off}
> 
> and switch to
> 
> \RequirePackage{pdfmanagement}
> 
> in case the output gets odd or errors are triggered.

First real-life manifestation of the change: starting the day by compiling the paper I'm working on, I get

	./JFM-FLM_Au.cls:1464: LaTeX Error: Command \maketitle undefined.

	See the LaTeX manual or LaTeX Companion for explanation.
	Type  H <return>  for immediate help.
	 ...                                              
                                                  
	l.1464 \renewcommand\maketitle
                              {%
	? 

while last Friday the paper compiled just fine. If I comment out \DocumentMetadata{}, things are OK.

Looking closer, the journal class (JFM-FLM_Au.cls) does not define \maketitle. Instead, it calls \hyperref which defines it with

  \let\HyOrg@maketitle\maketitle
  \def\maketitle{%
    \let\Hy@saved@footnotemark\@footnotemark
    \let\Hy@saved@footnotetext\@footnotetext
    \let\@footnotemark\H@@footnotemark
    \let\@footnotetext\H@@footnotetext
    \@ifnextchar[\Hy@maketitle@optarg{% ]
      \HyOrg@maketitle
      \Hy@maketitle@end
    }%

Then the journal class redefines \maketitle with \renewcommand.

Something inside the tagging setup set into place by \DocumentMetadata{} must counteract that mechanism, in such a way that after hyperref \maketile isn't defined.

Bruno Voisin