Ticket #33116: 33116.patch

src/wp-includes/shortcodes.php

@@ -378 +378 @@
 
                 $attributes = wp_kses_attr_parse( $element );
                 if ( false === $attributes ) {
+                        // Some plugins are doing weird things like [name] <[email]>.
+                        if ( 1 === preg_match( '%^<\s*\[\[?[^\[\]]+\]%', $element ) ) {
+                                $element = preg_replace_callback( "/$pattern/s", 'do_shortcode_tag', $element );
+                        }
+
                         // Looks like we found some crazy unfiltered HTML.  Skipping it for sanity.
                         $element = strtr( $element, $trans );
                         continue;

tests/phpunit/tests/shortcode.php

@@ -435 +435 @@
                                 '<div [gallery]>',
                         ),
                         array(
+                                '<[[gallery]]>',
+                                '<[gallery]>',
+                        ),
+                        array(
+                                '<div style="background:url([[gallery]])">',
+                                '<div style="background:url([[gallery]])">',
+                        ),
+                        array(
                                 '[gallery]<div>Hello</div>[/gallery]',
                                 '',
                         ),
@@ -473 +481 @@
                                 '<div [[gallery]]>',
                         ),
                         array(
+                                '<[[gallery]]>',
+                                '<[[gallery]]>',
+                        ),
+                        array(
                                 '[gallery]<div>Hello</div>[/gallery]',
                                 '',
                         ),