Editor: Fix enqueueing additional styles in `wp_enqueue_block_style()` to print only when blocks render.
In a block theme, additional block styles registered using the `wp_enqueue_block_style` function should only get printed when the block exists on a page. However, they currently always get rendered. This commit is a backport from Gutenberg that fixes the issue by printing the styles when a block renders. Follow-up to [52069]. Props poena, aristath, Mamaduka. Fixes #54787. Built from https://develop.svn.wordpress.org/trunk@52556 git-svn-id: http://core.svn.wordpress.org/trunk@52146 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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@ -1254,7 +1254,31 @@ function wp_enqueue_block_style( $block_name, $args ) {
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$hook = did_action( 'wp_enqueue_scripts' ) ? 'wp_footer' : 'wp_enqueue_scripts';
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if ( wp_should_load_separate_core_block_assets() ) {
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$hook = "render_block_$block_name";
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/**
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* Callback function to register and enqueue styles.
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*
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* @param string $content The block content.
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* @param array $block The full block, including name and attributes.
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* @return string Block content.
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*/
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$callback_separate = static function( $content, $block ) use ( $block_name, $callback ) {
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if ( ! empty( $block['blockName'] ) && $block_name === $block['blockName'] ) {
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return $callback( $content );
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}
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return $content;
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};
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/*
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* The filter's callback here is an anonymous function because
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* using a named function in this case is not possible.
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*
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* The function cannot be unhooked, however, users are still able
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* to dequeue the stylesheets registered/enqueued by the callback
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* which is why in this case, using an anonymous function
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* was deemed acceptable.
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*/
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add_filter( 'render_block', $callback_separate, 10, 2 );
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return;
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}
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/*
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@ -16,7 +16,7 @@
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*
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* @global string $wp_version
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*/
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$wp_version = '6.0-alpha-52555';
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$wp_version = '6.0-alpha-52556';
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/**
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* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
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