make AS::Multibyte::Chars work w/o multibyte core ext

Use ActiveSupport::Multibyte::Chars.new instead of String#mb_chars.
It allows to use ActiveSupport::Multibyte::Chars without requiring
String multibyte core extension.

1 files changed, 1 insertions, 1 deletions

diff --git a/activesupport/lib/active_support/multibyte/chars.rb b/activesupport/lib/active_support/multibyte/chars.rb
index 4fe925f7f4..87b1d76026 100644
--- a/activesupport/lib/active_support/multibyte/chars.rb
+++ b/activesupport/lib/active_support/multibyte/chars.rb
@@ -76,7 +76,7 @@ module ActiveSupport #:nodoc:
       #
       #   'Café périferôl'.mb_chars.split(/é/).map { |part| part.upcase.to_s } # => ["CAF", " P", "RIFERÔL"]
       def split(*args)
-        @wrapped_string.split(*args).map { |i| i.mb_chars }
+        @wrapped_string.split(*args).map { |i| self.class.new(i) }
       end
 
       # Works like like <tt>String#slice!</tt>, but returns an instance of Chars, or nil if the string was not