Ticket #49442: 49442.diff

wp-includes/blocks.php

@@ -518 +518 @@
         $parser_class = apply_filters( 'block_parser_class', 'WP_Block_Parser' );
 
         $parser = new $parser_class();
-        return $parser->parse( $content );
+
+        /**
+         * Filter the collection of parsed blocks.
+         *
+         * @since 5.?.?
+         *
+         * @param array[] $blocks Array of parsed block objects.
+         */
+        return apply_filters( 'parse_blocks', $parser->parse( $content ) );
 }
 
 /**