Where does CDATA come from?

Where does CDATA come from?

[Diego Rodriguez]

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Hello,

I am customizing my org-mode installation but there is something that I
don't understand.

When I execute the following statement:

```
(setq org-html-mathjax-template

"
<script type=\"text/x-mathjax-config\">
    MathJax.Hub.Config({
        displayAlign: \"%ALIGN\",
        displayIndent: \"%INDENT\",
        \"HTML-CSS\": { scale: %SCALE,
                        linebreaks: { automatic: \"%LINEBREAKS\" },
                        webFont: \"%FONT\"
                       },
        SVG: {scale: %SCALE,
              linebreaks: { automatic: \"%LINEBREAKS\" },
              font: \"%FONT\"},
        NativeMML: {scale: %SCALE},
        TeX: { equationNumbers: {autoNumber: \"%AUTONUMBER\"},
               MultLineWidth: \"%MULTLINEWIDTH\",
               TagSide: \"%TAGSIDE\",
               TagIndent: \"%TAGINDENT\"
        }
    });
</script>
<script src=\"%PATH\"></script>
")
```

A `CDATA` tag gets appended in my HTML export as shown below:

```html
  <script type="text/x-mathjax-config">
<![CDATA[
    mathjax.hub.config({
        displayalign: "center",
        displayindent: "0em",
        "html-css": { scale: 100,
                        linebreaks: { automatic: "false" },
                        webfont: "TeX"
                       },
        svg: {scale: 100,
              linebreaks: { automatic: "false" },
              font: "TeX"},
        nativemml: {scale: 100},
        tex: { equationnumbers: {autonumber: "AMS"},
               multlinewidth: "85%",
               tagside: "right",
               tagindent: ".8em"
        }
    });
  ]]>
  </script>
  <script src=
  "
https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS_HTML
"
  type="text/javascript">
</script>
```

As you can see above, when I set the variable I have no CDATA tag on it.
Where does this tag come from? The problem is that the CDATA tag messes up
with the MathJax configuration parser, as it expects a JavaScript script
inside. But, instead, it finds a CDATA tag that, while it might be valid
according to W3, the MathJax parser throws an `eval` error in the console
since it tries to parse the body of that HTML node.

Where does this CDATA tag gets added automatically and how can I modify
this behavior?


Diego Rodriguez
M.S. Candidate in Connective Media
Jacobs Technion-Cornell Institute at Cornell Tech

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Re: Where does CDATA come from?

[Ihor Radchenko]

Diego Rodriguez <dvr24@cornell.edu> writes:

> Hello,
>
> I am customizing my org-mode installation but there is something that I
> don't understand.
>
> When I execute the following statement:
>
> ```
> (setq org-html-mathjax-template
>
> "
> <script type=\"text/x-mathjax-config\">
> ...
> ")
> ```
>
> A `CDATA` tag gets appended in my HTML export as shown below:
>
> ```html
>   <script type="text/x-mathjax-config">
> <![CDATA[
>     mathjax.hub.config({

Sorry for the late reply.
I am unable to reproduce this bug on the latest Org main.

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>