Lower sign misinterpreted

[dschrempf]

Hello,

I am trying to export a LaTeX code block from Emacs Org mode into HTML and have a problem when using lower (<) signs (maybe it also happens with greater signs but I did not check that).

E.g., the following HTML code leads to an error when viewing the file because the '<' sign is interpreted in a wrong way (I don't know how but it seems to be interpreted as part of a tag) and MathJax does not succeed then. I.e., the Firefox HTML syntax checker shows the line \end{equation}... in red in the HTML file.

HTML code:

\begin{equation}
  \text{if } 0<i<N
\end{equation}</li>
</ul>

If I add spaces in-between, it works fine.

HTML code:

\begin{equation}
  \text{if } 0 < i < N
\end{equation}</li>
</ul>

This might just be a problem of HTML failing to parse the source code, but it leads to unexpected behavior. I have also posted this on the Org mode mailing list and they referred me to here.

Best wishes,
Dominik

[dpvc]

You are correct that it is due to the <i being interpreted as an HTML tag by the browser. This is explained further in the MathJax Documentation. Remember that you are creating an HTML document, not a TeX document, so you have to keep in mind the implications of that. Mostly, that means you have to be careful about your use of < in situations like this. Since the browser interprets the HTML long before MathJax runs, MathJax can't do anything about this issue, so I'm marking this "expected behavior".

[dschrempf]

Thank you.

Hm, this combination is used often in Mathematics though so it might be worth to check it during Org mode HTML export. I will ask people over there.