Instant previews: default configuration adds previews for all pages

[jonaharagon]

Context

I'll open a separate bug for you regarding #7051 (comment) if this makes it easier to track of.

Bug description

Enabling the material.extensions.preview extension makes mkdocs show instant previews on all internal links. I assume it is treating targets as all pages by default, instead of no pages.

markdown_extensions:
  - material.extensions.preview:

Related links

• Reporting a bug

Reproduction

9.5.18+insiders.4.53.6-preview-on-all-links.zip

Steps to reproduce

1. Enable material.extensions.preview without any options.
2. Add internal link to a page without setting the data-preview attribute on it.
3. That link gets the instant preview treatment anyways.

Browser

No response

Before submitting

• I have read and followed the bug reporting guidelines.
• I have attached links to the documentation, and possibly related issues and discussions.
• I assure that I have removed all customizations before submitting this bug report.
• I have attached a .zip file with a minimal reproduction using the built-in info plugin.

[squidfunk]

Thanks for reporting! Fixed in c5989cc.

[squidfunk]

Released as part of 9.5.19+insiders-4.53.8.