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implement String/Symbol#casecmp? including Unicode case folding

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* string.c: Implement String#casecmp? and Symbol#casecmp? by using
  String#downcase :fold for Unicode case folding. This does not include
  options such as :turkic, because these currently cannot be combined
  with the :fold option. This implements feature #12786.

* test/ruby/test_string.rb/test_symbol.rb: Tests for above.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56912 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
duerst 2016-11-28 08:37:32 +00:00
parent bd2fd73196
commit ad619e02c4
3 changed files with 69 additions and 0 deletions
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7
test/ruby/test_string.rb
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@ -2210,6 +2210,13 @@ CODE
assert_equal(1, "\u3042B".casecmp("\u3042a"))
end
def test_casecmp?
assert_equal(true, 'FoO'.casecmp?('fOO'))
assert_equal(false, 'FoO'.casecmp?('BaR'))
assert_equal(false, 'baR'.casecmp?('FoO'))
assert_equal(true, 'äöü'.casecmp?('ÄÖÜ'))
end
def test_upcase2
assert_equal("\u3042AB", "\u3042aB".upcase)
end