Fixes markdown katex bug

[davidmerfield]

There was previously an issue handling katex blocks with markdown inside, e.g.

$$
\mathbf{v}_1^{\text{cm}} = \mathbf{v} - \mathbf{v}_{\text{cm}} = \frac{\mathbf{v}}{2}
$$

Would become:

<p>$$ \mathbf{v}<em>2^{\text{cm}} = 0 - \mathbf{v}</em>{\text{cm}} = -\frac{\mathbf{v}}{2} $$</p>

This is now fixed.

---

• we need to strip the HTML and body tags from the pandoc output
• we need to preserve double dollar sign inline math somehow?
• fix new test spec bugs
• can we simplify some of the katex handling?
• can we support other converters? do they need -katex now? add specs
• add spec for weird bug in markdown txt file with html, e.g. This is an inline <code>$$withmath$$</code>

[cursor]

Bugbot is not enabled for your account, so this pull request was not reviewed.

Enable Bugbot in the Cursor dashboard to get automatic reviews on future PRs.

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 131fa24f0e

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[davidmerfield]

@codex review

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 3d4927dfbd

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[chatgpt-codex-connector]

Preserve escaped TeX when rendering fails

If a Pandoc math span contains invalid TeX with escaped markup, such as \bad <img src=x onerror=...>, this path decodes the entity via .text(), then renderTex falls back to returning $$ + original + $$, and replaceWith reparses that fallback as HTML. In that failure case escaped source text is turned into live tags instead of remaining a literal failed equation.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Skip newly rendered KaTeX spans during text scanning

When a Pandoc span contains valid TeX that itself includes a literal $$...$$ sequence, such as \text{$$x$$}, this runs before the later eachTextNode pass. Because that pass does not skip the .katex markup just inserted, it scans the MathML <annotation> text and treats the literal dollars as another equation, nesting KaTeX HTML inside the annotation and corrupting the rendered math.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Avoid re-rendering non-KaTeX Pandoc math spans

For files that reach this plugin from Pandoc converters other than the Markdown converter, the converter args still don't include --katex (for example app/build/converters/org/convert.js), so span.math contains Pandoc's plain/Unicode HTML rather than raw TeX. This selector nevertheless feeds the span text back to KaTeX, which reinterprets already-rendered output such as a fraction as 1/2 and loses the original formula.

Useful? React with 👍 / 👎.