HTML API: Truncated funky comments should cause the Tag Processor to pause.

A state change was missing in the Tag Processor when the input is too short to
find a comment closer after an opened funky comment. This patch fixes a issue
where `</#` does not correctly report incomplete input, but `</# ` does.

Developed in WordPress/wordpress-develop#7146
Discussed in https://core.trac.wordpress.org/ticket/61831

Props: jonsurrell.
Fixes #61831.

Built from https://develop.svn.wordpress.org/trunk@58858


git-svn-id: https://core.svn.wordpress.org/trunk@58254 1a063a9b-81f0-0310-95a4-ce76da25c4cd

Author: dmsnell

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

@@ -1909,6 +1909,8 @@ private function parse_next_tag(): bool {
 			if ( $this->is_closing_tag ) {
 				// No chance of finding a closer.
 				if ( $at + 3 > $doc_length ) {
+					$this->parser_state = self::STATE_INCOMPLETE_INPUT;
+
 					return false;
 				}
 

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-alpha-58857';
+$wp_version = '6.7-alpha-58858';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.