3 files changed, 8 insertions, 4 deletions
diff --git a/activesupport/CHANGELOG b/activesupport/CHANGELOG
index 0154a6d601..9cc032fd04 100644
--- a/activesupport/CHANGELOG
+++ b/activesupport/CHANGELOG
@@ -1,5 +1,7 @@
 *SVN*
 
+* Make String#chars slicing behaviour consistent with String. Closes #6387 [Manfred Stienstra]
+
 * Pull in latest multibye patch. Closes #6346 [Manfred Stienstra]
 
 * Add ActiveSupport::Multibyte.  Provides String#chars which lets you deal with strings as a sequence of chars, not of bytes. Closes #6242 [Julian Tarkhanov, Manfred Stienstra, Thijs van der Vossen & Jan Behrens]
diff --git a/activesupport/lib/active_support/multibyte/handlers/utf8_handler.rb b/activesupport/lib/active_support/multibyte/handlers/utf8_handler.rb
index c6ef6ad095..6c8eb88702 100644
--- a/activesupport/lib/active_support/multibyte/handlers/utf8_handler.rb
+++ b/activesupport/lib/active_support/multibyte/handlers/utf8_handler.rb
@@ -162,10 +162,10 @@ module ActiveSupport::Multibyte::Handlers
         elsif args[0].kind_of? Range
           cps = u_unpack(str).slice(*args)
           cps.nil? ? nil : cps.pack('U*')
-        elsif args[0].kind_of? Numeric
+        elsif args.size == 1 && args[0].kind_of?(Numeric)
           u_unpack(str)[args[0]]
         else
-          str.slice(*args)
+          u_unpack(str).slice(*args).pack('U*')
         end
       end
       alias_method :[], :slice
@@ -434,4 +434,4 @@ module ActiveSupport::Multibyte::Handlers
       UCD = UnicodeDatabase.new
     end
   end
-end
-\ No newline at end of file
+end
diff --git a/activesupport/test/multibyte_handler_test.rb b/activesupport/test/multibyte_handler_test.rb
index 7de3c0001e..06bc904c04 100644
--- a/activesupport/test/multibyte_handler_test.rb
+++ b/activesupport/test/multibyte_handler_test.rb
@@ -157,6 +157,8 @@ module UTF8HandlingTest
     assert_equal nil, @handler.slice('', -1..1), "Broken range should return nil"
     assert_equal '', @handler.slice('', 0..10), "Empty string should not break things"
     assert_equal "d Блå ﬃ", @handler.slice(@string, 3..9), "Unicode characters have to be returned"
+    assert_equal "d Блå ﬃ", @handler.slice(@string, 3, 7), "Unicode characters have to be returned"
+    assert_equal "A", @handler.slice(@string, 0, 1), "Slicing from an offset should return characters"
     assert_equal " Блå ﬃ ", @handler.slice(@string, 4..10), "Unicode characters have to be returned"
     assert_equal "", @handler.slice(@string, 7..6), "Range is empty, should return an empty string"
     assert_raise(ActiveSupport::Multibyte::Handlers::EncodingError) { @handler.slice(@bytestring, 2..3) }
@@ -266,4 +268,4 @@ class UTF8HandlingTestPure < Test::Unit::TestCase
     common_setup
     @handler = ::ActiveSupport::Multibyte::Handlers::UTF8Handler
   end
-end
-\ No newline at end of file
+end