Work on cleaning

src/Faker/Provider/Internet.php

@@ -94,13 +94,16 @@ public function userName()
         $username = static::bothify($this->generator->parse($format));
 
         $username = strtolower(static::transliterate($username));
-        $username = rtrim($username, '.');
 
         // check if transliterate() didn't support the language and removed all letters
         if (preg_match('/^[._]*$/', $username)) {
             throw new \Exception('userName failed with the selected locale. Try a different locale or activate the "intl" PHP extension.');
         }
 
+        // clean possible trailing dots from first/last names
+        $username = str_replace('..', '.', $username);
+        $username = rtrim($username, '.');
+
         return $username;
     }
     /**
@@ -129,13 +132,15 @@ public function domainWord()
         $lastName = $this->generator->format('lastName');
 
         $lastName = strtolower(static::transliterate($lastName));
-        $lastName = rtrim($lastName, '.');
 
         // check if transliterate() didn't support the language and removed all letters
         if (preg_match('/^[._]*$/', $lastName)) {
             throw new \Exception('domainWord failed with the selected locale. Try a different locale or activate the "intl" PHP extension.');
         }
 
+        // clean possible trailing dot from last name
+        $lastName = rtrim($lastName, '.');
+
         return $lastName;
     }