aboutsummaryrefslogtreecommitdiffstats
path: root/activesupport/lib/active_support/core_ext/string/multibyte.rb
diff options
context:
space:
mode:
Diffstat (limited to 'activesupport/lib/active_support/core_ext/string/multibyte.rb')
-rw-r--r--activesupport/lib/active_support/core_ext/string/multibyte.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/string/multibyte.rb b/activesupport/lib/active_support/core_ext/string/multibyte.rb
index 1c73182259..07c0d16398 100644
--- a/activesupport/lib/active_support/core_ext/string/multibyte.rb
+++ b/activesupport/lib/active_support/core_ext/string/multibyte.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
require "active_support/multibyte"
class String
@@ -14,6 +16,8 @@ class String
# >> "lj".mb_chars.upcase.to_s
# => "LJ"
#
+ # NOTE: An above example is useful for pre Ruby 2.4. Ruby 2.4 supports Unicode case mappings.
+ #
# == Method chaining
#
# All the methods on the Chars proxy which normally return a string will return a Chars object. This allows