table processing

src/wp-includes/html-api/class-wp-html-processor.php

@@ -1292,6 +1292,7 @@ private function step_in_body() {
 				$this->insert_html_element( $this->state->current_token );
 				$this->state->frameset_ok = false;
 				$this->state->insertion_mode = WP_HTML_Processor_State::INSERTION_MODE_IN_TABLE;
+				return true;
 
 			/*
 			 * > An end tag whose tag name is "br"
@@ -1703,6 +1704,7 @@ private function step_in_table() {
 				$this->insert_html_element(
 					new WP_HTML_Token( null, 'TBODY', false )
 				);
+				$this->state->insertion_mode = WP_HTML_Processor_State::INSERTION_MODE_IN_TABLE_BODY;
 				return $this->step( self::REPROCESS_CURRENT_NODE );
 
 			/*
@@ -1780,13 +1782,18 @@ private function step_in_table() {
 			case "+FORM":
 				if (
 					$this->state->stack_of_open_elements->has_element_in_scope( 'TEMPLATE' ) ||
-
+					$this->has_element_pointer( 'FORM' )
 				) {
+					return $this->step();
 				}
+				$this->insert_html_element( $this->state->current_token );
+				$this->set_element_pointer( 'FORM' );
+				return true;
 
 			/*
 			 * > An end-of-file token
 			 */
+
 			/*
 			 * > Anything else
 			 * > Parse error. Enable foster parenting, process the token using the rules for the
@@ -2391,6 +2398,14 @@ public function has_bookmark( $bookmark_name ) {
 		return parent::has_bookmark( "_{$bookmark_name}" );
 	}
 
+	private function set_element_pointer( string $tag_name ) {
+		return parent::set_bookmark( "element_pointer_{$tag_name}" );
+	}
+
+	private function has_element_pointer( string $tag_name ) {
+		return parent::has_bookmark( "element_pointer_{$tag_name}" );
+	}
+
 	/*
 	 * HTML Parsing Algorithms
 	 */