Core List – PRC Platform

PRC's override/extension of the WordPress core/list block.

Block Namespace

prc-block/core-list

Enables blockGap spacing support (not enabled by default in core)
Registers an "Unstyled List" block style that removes list bullets/numbers
Applies a --block-gap CSS custom property to control spacing between list items
Adds the wp-block-list class to the rendered list element on the frontend

Support	Change
`spacing.blockGap`	Enabled (`true`) — allows gap control between list items

The blockGap support is added both in PHP (add_attributes filter on block_type_metadata) and in JS (blocks.registerBlockType filter).

None beyond core. The blockGap support is added via the supports API, not as a custom attribute.

Style Name	Label	Description
`list-style-type-none`	Unstyled List	Removes bullets and `::before` pseudo-element content

Registered in index.js via registerBlockStyle.

File: style.scss

.is-style-list-style-type-none — sets list-style-type: none and removes li::before content
.wp-block-list li:first-child — removes margin-block-start
.wp-block-list li:not(:first-child) — uses var(--block-gap) for margin-block-start spacing
.wp-block-list li a — text-decoration: underline on list item links

File: index.js

Adds a higher-order component (editor.BlockListBlock filter) that injects --block-gap as a CSS custom property on the block wrapper in the editor
Uses getBlockGapSupportValue from @prc/functions to compute the gap value

None. No view.js file.

File: class-core-list.php

add_attributes (block_type_metadata filter) — enables spacing.blockGap support on the core/list block metadata
render (render_block filter) — processes core/list-item blocks to:
- Add the wp-block-list class to the list element (ul or ol)
- Set a --block-gap CSS custom property from the block's gap attribute

Note: The render filter targets core/list-item (not core/list) to apply the gap styling.

<ul class="wp-block-list" style="--block-gap: 1em;">
  <li>Item one</li>
  <li>Item two</li>
  <li>Item three</li>
</ul>

With the unstyled style:

<ul class="wp-block-list is-style-list-style-type-none" style="--block-gap: 0.5em;">
  <li>Item one</li>
  <li>Item two</li>
</ul>

None.