Disable attachment pages on legacy WordCamp sites

[dd32]

Summary

• Forces wp_attachment_pages_enabled to 0 via pre_option filter in wcorg-misc.php
• WordPress 6.4+ disables attachment pages on new installs, but legacy sites still have them enabled
• When disabled, WordPress core automatically 301 redirects attachment page requests to the attachment file URL
• This prevents SEO issues and spam on attachment pages like the example in the issue

Details

The fix is a single line: add_filter( 'pre_option_wp_attachment_pages_enabled', '__return_zero' );

This follows the same pattern already used for blog_public in the same file. WordPress core handles the redirect logic in wp-includes/canonical.php (line ~552) when this option is falsy.

Reference: https://make.wordpress.org/core/2023/10/16/changes-to-attachment-pages/

Test plan

• Integration test verifying get_option( 'wp_attachment_pages_enabled' ) returns 0
• Verify attachment page URLs return 301 redirects to the media file URL
• Verify normal pages and posts are unaffected

Fixes WordPress#1333

🤖 Generated with Claude Code

[dd32]

No need to add the tests here.

[dd32]

Filed upstream: WordPress#1682