Ticket #23855: 23855.3.patch

src/wp-includes/shortcodes.php

@@ -155 +155 @@
  * @return boolean
  */
 function has_shortcode( $content, $tag ) {
+        if ( false === strpos( $content, '[' ) ) {
+                return false;
+        }
+
         if ( shortcode_exists( $tag ) ) {
                 preg_match_all( '/' . get_shortcode_regex() . '/s', $content, $matches, PREG_SET_ORDER );
                 if ( empty( $matches ) )
@@ -186 +190 @@
 function do_shortcode($content) {
         global $shortcode_tags;
 
+        if ( false === strpos( $content, '[' ) ) {
+                return $content;
+        }
+
         if (empty($shortcode_tags) || !is_array($shortcode_tags))
                 return $content;
 
@@ -375 +383 @@
 function strip_shortcodes( $content ) {
         global $shortcode_tags;
 
+        if ( false === strpos( $content, '[' ) ) {
+                return $content;
+        }
+
         if (empty($shortcode_tags) || !is_array($shortcode_tags))
                 return $content;