Block Processor: Fix is_block_type() for inner HTML

Author: dmsnell

src/wp-includes/class-wp-block-processor.php

@@ -630,8 +630,15 @@ public function __construct( string $source_text ) {
 	 */
 	public function next_block( ?string $block_type = null ): bool {
 		while ( $this->next_delimiter( $block_type ) ) {
-			if ( self::CLOSER !== $this->get_delimiter_type() ) {
-				return true;
+			switch ( $this->get_delimiter_type() ) {
+				case self::OPENER:
+				case self::VOID:
+					return true;
+
+				case null:
+					if ( '*' === $block_type ) {
+						return true;
+					}
 			}
 		}
 
@@ -1440,12 +1447,17 @@ public function is_block_type( string $block_type ): bool {
 			return true;
 		}
 
-		// This is a core/freeform text block, it’s special.
-		if ( $this->is_html() && 0 === ( $this->open_blocks_length[0] ?? null ) ) {
-			return (
-				'core/freeform' === $block_type ||
-				'freeform' === $block_type
-			);
+		if ( $this->is_html() ) {
+			// This is a core/freeform text block, it’s special.
+			if ( 0 === ( $this->open_blocks_length[0] ?? null ) ) {
+				return (
+					'core/freeform' === $block_type ||
+					'freeform' === $block_type
+				);
+			}
+
+			// Otherwise this is innerHTML and not a block.
+			return false;
 		}
 
 		return $this->are_equal_block_types( $this->source_text, $this->namespace_at, $this->name_at - $this->namespace_at + $this->name_length, $block_type, 0, strlen( $block_type ) );