Block Pattern category Duplicates term with different slug

[jigneshnakrani088]

Description

When registering a new pattern category with / as per Developer Docs, i.e themeslug/custom and when I select "Add new pattern" and select the category from the list, the slug is themeslug-custom which is a new category(duplicate) with same Name.

This has been reported in Trac Ticket; as per suggestion reporting the issue here.

Step-by-step reproduction instructions

1. Register a block pattern category and pattern as per docs,

add_action( 'init', 'themeslug_register_pattern_categories' );

function themeslug_register_pattern_categories() {
	register_block_pattern_category( 'themeslug/custom', array( 
		'label'       => __( 'Theme Name: Custom', 'themeslug' ),
		'description' => __( 'Custom patterns for Theme Name.', 'themeslug' )
	) );
}

Now try adding the themeslug/custom category to any block pattern:

<?php
/**
 * Title: Hero
 * Slug: themeslug/hero
 * Categories: featured, themeslug/custom
 */
?>
<!-- Your block markup goes here. -->

2. Go to Appearance > Editor > Patterns and select the specific pattern (the slug is themeslug%2Fcustom)
3. Select "Add new pattern" or Duplicate any existing pattern
4. And select Theme Name: Custom category from the list,
   • The pattern will have a new category assigned and the slug will be themeslug-custom
   • Will have two categories with the same name but with different slugs.

Screenshots, screen recording, code snippet

Environment info

• WordPress: 6.8-alpha
• Theme: Twenty Twenty-Four

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure

[Andrew-Starr]

I've always used themeslug_custom and have not seen the duplicate issue doing it this way.

So now wondering if the reference in the docs incorrect or is there an issue in the pattern registry class?

[jigneshnakrani088]

themeslug_custom and have not seen the duplicate issue doing it this way.

Correct, it will not create any duplications there.

So now wondering if the reference in the docs incorrect or is there an issue in the pattern registry class?

On second thought, it's the issue with the example in the docs reference. and I already raised the issue there.