altimg (mathml attr) triggers errors

[TzviyaSiegman]

Images used in the altimg attr for mathml are throwing errors:

<message id="RSC-007" severity="error">RSC-007, ERROR, [Referenced resource "OPS/MATH4EQ_0198.png" could not be found in the EPUB.], OPS/f04.xhtml (37-248)</message>

sample file sent to @rdeltour

[rdeltour]

I could reproduce the error but it does not look like a bug in EPUBCheck after all.

In the XHTML content documents, alternative MathML images are defined like this:

<math display="block" overflow="scroll" xmlns="http://www.w3.org/1998/Math/MathML"
                alttext="2.468 multiplication 10 cubed" altimg="MATH1EQ_0492.png">

But all the images are located at OPS/images/ in the EPUB container, and the XHTML files at OPS/.

So the altimg attribute should be "images/MATH4EQ_0198.png".

[rdeltour]

I'm closing as not an issue, but feel free to keep commenting here or reopen 😊