LaTeX error: md ending with intertext

[Sean Fitzpatrick]

Probably fair to call this author error, but this worked before the overhaul of the display math markup.

Make an md whose last line is intertext. For example:

      <p>
        <md>
          <mrow>x \amp =2</mrow>
          <mrow>y \amp =4</mrow>
          <intertext>Blah blah blah</intertext>
        </md>
      </p>

This will display fine in HTML, but the LaTeX will not build: this appears to be a case not covered in the XSL, since the closing \end{align*} is never written.

Is it stupid to end an md with intertext? Probably. Is it still a bug? I guess Rob can answer that.

[Sean Fitzpatrick]

I should note that this came up for me in a case where the structure of the md was

equation

intertext

equation

intertext

and it was somewhat reasonable to want the two intertexts to align. But not essential, so there is an easy workaround: don't put intertext at the end.

[Rob Beezer]

Maybe not "stupid" on the author's part, but I think INTERtext must be
INTER-somethings.

I do generally think #intertext is sorta stupid. LaTeX/PDF is teh onhly place
where we take any advantage of it whatsoever. It is "useless" for any other format.

What does the schema do with your examples?

Rob

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[Sean Fitzpatrick]

I was working on Windows, where I don't have Jing set up. 

The pretext-tools extension in vscode does some checking but I don't always trust it. (For example, it claims I cannot have an md without more.)

I've removed all intertext since, as you point out, it's never really been as useful as one might have hoped. 

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[Rob Beezer]

On 5/23/26 18:45, Sean Fitzpatrick wrote:
> where I don't have Jing set up.

I checked, the schema was a bit loose. But the LaTeX conversion presumes an #md
with #intertext will start, and end, with an #mrow. And that there are not two
adjacent #intertext. Many ways to fail.

So I tightened up the schema to match reality:

https://github.com/PreTeXtBook/pretext/pull/2874

Thanks for bringing this one forward.

Rob