revealjs: bundled slide-menu plugin link missing accessible name (axe link-name violation)

[presnick]

Description

The slide menu button (from the bundled reveal.js-menu plugin) renders as <a href="#"> with no text content or aria-label, which fails the axe-core link-name rule (WCAG 2.4.4, Level A).

Screen reader users encounter a link announced as just "link" with no indication of what it does.

Note: The upstream plugin repo (denehyg/reveal.js-menu) is archived, so this can only be fixed in Quarto's bundled copy.

Selector

.slide-menu-button > a[href="#"]

Suggested fix

Add an aria-label to the menu button link:

<a href="#" aria-label="Slide menu">

How to reproduce

1. Create a minimal Quarto revealjs presentation
2. Run axe-core against the rendered HTML:

quarto render presentation.qmd
npx @axe-core/cli file:///path/to/presentation.html

Output:

Violation of "link-name" with 1 occurrences!
  Ensure links have discernible text. Correct invalid elements at:
   - .slide-menu-button > a[href="#"]

Environment

• Quarto 1.9.36
• reveal.js 5.1.0 (bundled)
• axe-core 4.11.1

Reference

• axe-core link-name rule
• WCAG 2.4.4 Link Purpose