Ticket #27270: email_validation.patch

wp-includes/formatting.php

@@ -1989 +1989 @@
                 return apply_filters( 'is_email', false, $email, 'local_invalid_chars' );
         }
 
-        // DOMAIN PART
         // Test for sequences of periods
-        if ( preg_match( '/\.{2,}/', $domain ) ) {
+        if ( preg_match( '/\.{2,}/', $email ) ) {
                 /** This filter is documented in wp-includes/formatting.php */
                 return apply_filters( 'is_email', false, $email, 'domain_period_sequence' );
         }
 
         // Test for leading and trailing periods and whitespace
-        if ( trim( $domain, " \t\n\r\0\x0B." ) !== $domain ) {
+        if ( trim( $domain, " \t\n\r\0\x0B." ) !== $domain || trim( $local, " \t\n\r\0\x0B." ) !== $local ) {
                 /** This filter is documented in wp-includes/formatting.php */
                 return apply_filters( 'is_email', false, $email, 'domain_period_limits' );
         }