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@@ -1,5 +1,7 @@
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 *SVN*
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+* Add String#squish and String#squish! to remove consecutive chunks of whitespace.  #11123 [jordi, Henrik N]
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+
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 * Serialize BigDecimals as Floats when using to_yaml. #8746 [ernesto.jimenez]
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 * Adding TimeWithZone #to_yaml, #to_datetime, #eql? and method aliases for duck-typing compatibility with Time [Geoff Buesing]

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@@ -5,10 +5,12 @@ require 'active_support/core_ext/string/starts_ends_with'
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 require 'active_support/core_ext/string/iterators' unless 'test'.respond_to?(:each_char)
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 require 'active_support/core_ext/string/unicode'
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 require 'active_support/core_ext/string/xchar'
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+require 'active_support/core_ext/string/filters'
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 class String #:nodoc:
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   include ActiveSupport::CoreExtensions::String::Access
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   include ActiveSupport::CoreExtensions::String::Conversions
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+  include ActiveSupport::CoreExtensions::String::Filters
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   include ActiveSupport::CoreExtensions::String::Inflections
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   if RUBY_VERSION < '1.9'
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     include ActiveSupport::CoreExtensions::String::StartsEndsWith

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@@ -168,6 +168,23 @@ class StringInflectionsTest < Test::Unit::TestCase
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     assert !s.end_with?('el')
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   end
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+  def test_string_squish
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+    original = %{ A string with tabs(\t\t), newlines(\n\n), and
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+                  many spaces(  ). }
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+
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+    expected = "A string with tabs( ), newlines( ), and many spaces( )."
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+
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+    # Make sure squish returns what we expect:
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+    assert_equal original.squish,  expected
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+    # But doesn't modify the original string:
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+    assert_not_equal original, expected
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+
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+    # Make sure squish! returns what we expect:
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+    assert_equal original.squish!, expected
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+    # And changes the original string:
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+    assert_equal original, expected
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+  end
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+
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   if RUBY_VERSION < '1.9'
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     def test_each_char_with_utf8_string_when_kcode_is_utf8
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       old_kcode, $KCODE = $KCODE, 'UTF8'