export to PDF with images in notebooks having alternate text

[durandg12]

Hello, I have an issue with the export to PDF with images in notebooks having alternate text.

I have seen found issues about the export to PDF of notebooks with images in the markdown like #552, #1079 and #1326 but I didn't find my error message anywhere in those discussions, and they seemed solved while using alternate text.

In one of the Markdown cells of my notebook, I have the line ![title](imgTP2.png), with the alternate text title.

Here is the error message of the compiler

! Package xkeyval Error: `alt' undefined in families `adjbox,Gin,adjcalc'.

See the xkeyval package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.477 ...keepaspectratio,alt={title}]{imgTP2.png}}
                                                  
? 
! Emergency stop.
 ...                                              
                                                  
l.477 ...keepaspectratio,alt={title}]{imgTP2.png}}

The LaTeX code generated appears to be false, and it appears to be because of the alternative text title.

\begin{figure}
\centering
\pandocbounded{\includegraphics[keepaspectratio,alt={title}]{imgTP2.png}}
\caption{title}
\end{figure}

When I remove that alternative text with just ![](imgTP2.png), it works, but it doesn't seem like an intended behavior.

[aryansk]

I’m taking a look at this. I’ll keep the fix focused on making Pandoc’s alt image option compile cleanly in the LaTeX template and add focused regression coverage.