Minimal example for image bug in xhtml export

Minimal example for image bug in xhtml export

[Matthias Weber]

I minimized my example to the following. To have the image displayed in the html file (filename-div.html in the filename-export directory), you need to put hacker.jpg into  
filename-export/images). The problem appears also without the image present, the formula is covered by an image that shouldn’t be there.
Notice too that the overline is present in the pdf, but not in the html.


\usemodule[mathml]
 \setupexternalfigures[location=default]
 \setupbackend[export=yes,xhtml=yes]
 \setupexport
  [svgstyle=mathtest-style,
   hyphen=yes,
   width=60em]
   
\starttext 

\subject{Introduction}

\startparagraph
\input knuth
\stopparagraph

\placefigure
[force]
[figure:configurations]
{Some simple Image}   
{\externalfigure[hacker.jpg]
[width=\textwidth]}

\startparagraph
Let $p$ and $q$ be two different points. The \emph{segment} $\overline{pq}$ connecting $p$ and $q$ is the set
\startformula
pq = \{(1-t) p + t q: t\in[0,1]\}\ .
\stopformula
\stopparagraph

\stoptext


Any help will be appreciated!

Thanks,

Matthias
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[NTG-context] Re: Minimal example for image bug in xhtml export

[Hans Hagen via ntg-context]

On 7/12/2025 8:50 PM, Matthias Weber wrote:
> I minimized my example to the following. To have the image displayed in the html file (filename-div.html in the filename-export directory), you need to put hacker.jpg into
> filename-export/images). The problem appears also without the image present, the formula is covered by an image that shouldn’t be there.
> Notice too that the overline is present in the pdf, but not in the html.
> 
> 
> \usemodule[mathml]
>   \setupexternalfigures[location=default]
>   \setupbackend[export=yes,xhtml=yes]
>   \setupexport
>    [svgstyle=mathtest-style,
>     hyphen=yes,
>     width=60em]
>     
> \starttext
> 
> \subject{Introduction}
> 
> \startparagraph
> \input knuth
> \stopparagraph
> 
> \placefigure
> [force]
> [figure:configurations]
> {Some simple Image}
> {\externalfigure[hacker.jpg]
> [width=\textwidth]}
> 
> \startparagraph
> Let $p$ and $q$ be two different points. The \emph{segment} $\overline{pq}$ connecting $p$ and $q$ is the set
> \startformula
> pq = \{(1-t) p + t q: t\in[0,1]\}\ .
> \stopformula
> \stopparagraph
> 
> \stoptext
> 
> 
> Any help will be appreciated!

I see what goes wrong .. you can try to patch grph-inc (and --make 
afterwards)

%    \dostarttaggednodetail\t!image
    \global\advanceby\nofexportedboxes\plusone
    \dostarttagged\t!image{\the\nofexportedboxes}%
    \clf_figure_push {

as test, not the real solution. Btw you need to tun that document with

   mtxrun --script epub --images thatfile

to get the proper math

Hans


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               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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