Re: Support alt text in LaTeX output

On Thu, Jul 23, 2026 at 11:07:25AM -0600, Charles Staats wrote:
> Hello,
> 
> * Insert a `\DocumentMetadata` command (with appropriate settings) at the
> beginning of the document.
> * (For pdf output) compile with lualatex instead of pdflatex.

I implemented everything we discussed about on the texi2any side and
tested on the Texinfo manual itself, which is in general a good target.

I had to keep amsfonts even with unicode-math for \circledR.  I also
replaced the use of mdframed by tcolorbox, which is an improvement.  And
lastly, there were issues with math used in sectioning commands
arguments that ended up in PDF bookmarks for contents, which lead to
suboptimal output with pdflatex, but stopped the processing with
lualatex, I fixed those issues too.

The choice of the customization variable name and the documentation
remains.

-- 
Pat