Changing LOCAL_PART to more lenient.

lib/gitlab/path_regex.rb

@@ -140,8 +140,7 @@ module PathRegex
     FULL_NAMESPACE_FORMAT_REGEX = %r{(#{NAMESPACE_FORMAT_REGEX}/){,#{Namespace::NUMBER_OF_ANCESTORS_ALLOWED}}#{NAMESPACE_FORMAT_REGEX}}
 
     # The email pattern should be compilable to a Regex with the option v. Hence the - character must be quoted.
-    LOCAL_PART_1 = '[a-zA-Z0-9]+' # First character must be a-z, A-Z or a number. We don't allow quoted emails.
-    LOCAL_PART_2 = '([._%+\-]\w+)*' # The characters ._%+- cannot be consecutive, they must be followed by an alphanumeric character.
+    LOCAL_PART = '[^@]+' # Any character except @.
     DOMAIN = '([a-zA-Z0-9]+([a-zA-Z0-9\-][a-zA-Z0-9]+)*\.)+' # Domain or subdomains must not start or finish with hyphen
     TLD = '[a-zA-Z]{2,}' # TLD
     EMAIL_FORMAT_JS = LOCAL_PART_1 + LOCAL_PART_2 + '@' + DOMAIN + TLD