[benmandrew]

A label after a changed display equation is parsed as its own block. The output puts it after the #diff-added[...] wrapper, so the label attaches to the wrapper instead of the equation. Any reference to it then fails with "cannot reference styled". To reproduce, diff these two versions:

#set math.equation(numbering: "(1)")
$ x = 1 $ <eq-main>   // new version: $ x = 2 $ <eq-main>
See @eq-main.

The render loop now looks at the next result. When a bare label follows an added equation, the label goes inside the wrapper, next to the equation: #diff-added[$ x = 2 $ <eq-main>]. A small next_label helper finds the labels that would otherwise be output bare.

Summary by CodeRabbit

• Bug Fixes
  • Equation changes now keep their associated label within the same added-content highlight.
  • Prevents the label from appearing as a separate standalone line.

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[coderabbitai]

📝 Walkthrough

The renderer now checks whether an added equation is followed by a label-only paragraph. When eligible, it includes the label in the equation’s added diff wrapper. An integration test covers a changed equation that retains its label.

Changes: Equation label rendering

Layer / File(s)	Summary
Keep labels with added equations src/render.rs, tests/integration.rs	A helper identifies label-only unchanged or added paragraphs. When one follows an added equation, the renderer consumes it and includes its trimmed text in the added diff wrapper. The integration test checks that the label is not emitted as a separate line.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

Suggested reviewers: sou1118

Merge Risk: ⚪ Minimal · up to ab9c3

The changed equation and its following label render together. No actionable merge-blocking risk is established.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: preserving a label with its added equation.
Docstring Coverage		Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 6 functions across 2 files.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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[coderabbitai]

🔇 Additional comments: 3

src/render.rs: 2

21-43: LGTM!

---

115-126: LGTM!

tests/integration.rs: 1

221-222: 📐 Maintainability & Code Quality | 🔵 Trivial | 💤 Low value

⚠️ Unverified finding
Verification ran but could not confirm this finding. It is shown for review, not as a verified issue.

Use an exact assertion for the rendered equation.

contains checks pass if unrelated output changes elsewhere. The test only checks one fragment of the body. Extract the body after the preamble and compare it with assert_eq!. The comparison then catches unexpected extra or reordered output.

As the retrieved learning says, prefer exact assertions such as assert_eq! over loose containment checks.

Source: Learnings

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: 59622cad-dc84-4c19-b97c-b550cb490420

📥 Commits

Reviewing files that changed from the base of the PR and between a4761cc and ab9c360.

📒 Files selected for processing: 2

• src/render.rs
• tests/integration.rs

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