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-rw-r--r--activesupport/lib/active_support/core_ext/string/multibyte.rb18
1 files changed, 11 insertions, 7 deletions
diff --git a/activesupport/lib/active_support/core_ext/string/multibyte.rb b/activesupport/lib/active_support/core_ext/string/multibyte.rb
index a124202936..cc6f2158e7 100644
--- a/activesupport/lib/active_support/core_ext/string/multibyte.rb
+++ b/activesupport/lib/active_support/core_ext/string/multibyte.rb
@@ -1,4 +1,3 @@
-# encoding: utf-8
require 'active_support/multibyte'
class String
@@ -10,12 +9,10 @@ class String
# encapsulates the original string. A Unicode safe version of all the String methods are defined on this proxy
# class. If the proxy class doesn't respond to a certain method, it's forwarded to the encapsulated string.
#
- # name = 'Claus Müller'
- # name.reverse # => "rell??M sualC"
- # name.length # => 13
- #
- # name.mb_chars.reverse.to_s # => "rellüM sualC"
- # name.mb_chars.length # => 12
+ # >> "lj".upcase
+ # => "lj"
+ # >> "lj".mb_chars.upcase.to_s
+ # => "LJ"
#
# == Method chaining
#
@@ -36,6 +33,13 @@ class String
ActiveSupport::Multibyte.proxy_class.new(self)
end
+ # Returns +true+ if string has utf_8 encoding.
+ #
+ # utf_8_str = "some string".encode "UTF-8"
+ # iso_str = "some string".encode "ISO-8859-1"
+ #
+ # utf_8_str.is_utf8? # => true
+ # iso_str.is_utf8? # => false
def is_utf8?
case encoding
when Encoding::UTF_8