[MaggieCabrera]

Imports Ipsum from https://github.com/WordPress/ipsum and makes it the default theme for WordPress 7.2.

Trac ticket: https://core.trac.wordpress.org/ticket/66352

Ipsum drops the year-based naming, and a few places only look for twenty* themes:

• The build only copies wp-content/themes/twenty*, so Ipsum would be missing from builds and packages.
• PHPCS, the PHP compatibility check and PHPStan skip it the same way. With it added, Ipsum passes all three as is.
• test_default_theme_in_default_theme_list() expected a twenty prefix.

The commits can land separately, like the Twenty Twenty-Five import and its follow-up:

1. The theme files from WordPress/ipsum@b3a4bca. Repository tooling and development docs stay on GitHub.
2. Bundled theme conventions: Version: 1.0, Tested up to: 7.2, the readme title and changelog entry, and a final newline in every file. These need to go back to the Ipsum repository too, so the next sync doesn't undo them.
3. The default theme switch. Since 6.7, the theme tests need WP_DEFAULT_THEME, WP_Theme::$default_themes, $_new_bundled_files and the tested themes to change together.
4. Build, lint and the default themes workflow.

Testing Instructions

1. Open the Playground preview. Ipsum is the active theme on the new site.
2. Browse the front end and open the Site Editor. Templates, parts and patterns load.
3. Run npm run test:php -- --group themes. All tests pass.

Use of AI Tools

AI assistance: Yes
Tool(s): Claude Code
Model(s): Claude Opus 5.5
Used for: Comparing this with earlier default theme imports, preparing the commits, running the checks, and testing Ipsum on Playground with WordPress 7.1 and 7.2 without Gutenberg. I reviewed all the changes.

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This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.

🤖 Generated with Claude Code

[github-actions]

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Test this pull request with WordPress Playground.

[MaggieCabrera]

@desrosj pinging you here for your knowledge with default theme stuff

[MaggieCabrera]

Props list for the theme as of today:

Props onemaggie, juanfra, poena, iamarinoh, shailu25, areziaal, josephscott, ddewan, noruzzaman, williampatton, jeffpaul, kafleg, maneshtimilsina, sakshamsharma5, soean, moonjellydigital, sheulyshila, yashjawale, maxinacube, mukesh27, nilambar, huzaifaalmesbah, mukeshpanchal27.

[peterwilsoncc]

I know this is a WIP but I've added a note inline.

For the @font-face and image files, is it possible to add a cache busting string to the rendered version, ie ?ver=20261021, either via a filter or in theme.json? It's helpful for cache busting on sites with long caches for static files.

Thirty days or longer is pretty typical these days as lighthouse calls out shorter caching headers.

As with the inline comment, this isn't a blocker. Not even close...

[peterwilsoncc]

A few naming things suggestions for this file. I don't think they block the initial commit but would be good to change prior to the production release.

The key word above is suggestions, feel free to push back:

• ipsum_register_editor_styles
• ipsum_add_theme_support
• ipsum_enqueue_styles
• ipsum_register_block_styles

Nitty nit nit pick: as I say, feel free to push back :)

[mukeshpanchal27]

See WordPress/ipsum#161

[MaggieCabrera]

For the @font-face and image files, is it possible to add a cache busting string to the rendered version, ie ?ver=20261021, either via a filter or in theme.json? It's helpful for cache busting on sites with long caches for static files.

Thirty days or longer is pretty typical these days as lighthouse calls out shorter caching headers.

Images are versioned now. Fonts can’t be yet, because core works out the font format from the end of the URL, so .woff2?ver=1.0 gets dropped. That needs a core fix first.

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

Core Committers: Use this line as a base for the props when committing in SVN:

Props onemaggie, peterwilsoncc, mukesh27.

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