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NEWS: document String#-@ change

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* test/ruby/test_string.rb (test_uplus_minus): test deduplication
  [ruby-core:79747] [Feature #13077]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57710 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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normal 2017-02-25 02:31:03 +00:00
parent 4edac7f5d0
commit 15ef28a991
2 changed files with 7 additions and 0 deletions
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5
NEWS
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@ -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)

2
test/ruby/test_string.rb
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@ -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