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| -rw-r--r-- | NEWS | 5 | ||||
| -rw-r--r-- | test/ruby/test_string.rb | 2 |
2 files changed, 7 insertions, 0 deletions
@@ -28,6 +28,11 @@ with all sufficient information, see the ChangeLog file or Redmine * Thread#fetch [Feature #13009] +* String + + * String#-@ deduplicates unfrozen strings. Already-frozen + strings remain unchanged for compatibility. [Feature #13077] + === Stdlib updates (outstanding ones only) === Compatibility issues (excluding feature bug fixes) diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb index d5166a82bc..da8bd5f05a 100644 --- a/test/ruby/test_string.rb +++ b/test/ruby/test_string.rb @@ -2537,6 +2537,8 @@ CODE assert_not_equal(str.object_id, (+str).object_id) assert_equal(str.object_id, (-str).object_id) + bar = %w(b a r).join('') + assert_same(str, -bar, "uminus deduplicates [Feature #13077]") end def test_ord |