merges r31995 and r31998 from trunk into ruby_1_9_2.

--
* lib/rexml/parsers/xpathparser.rb
  (REXML::Parsers::XPathParser#parse),
  test/rexml/test_elements.rb
  (ElementsTester::test_each_with_frozen_condition):
  don't modify original XPath. fixes #4164
  Reported by Pavel Shved. Thanks!!!
--
* ChangeLog: fix ticket number at r31995. fixes #4161 is correct.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@32378 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

4 files changed, 30 insertions, 2 deletions

diff --git a/ChangeLog b/ChangeLog
index 1670283334..fca3bd3027 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,21 @@
+Sat Jun 11 16:04:03 2011  Kouhei Sutou  <kou@cozmixng.org>
+
+	* lib/rexml/parsers/xpathparser.rb
+	  (REXML::Parsers::XPathParser#parse),
+	  test/rexml/test_elements.rb
+	  (ElementsTester#test_each_with_frozen_condition):
+	  don't modify original XPath. fixes #4164
+	  Reported by Pavel Shved. Thanks!!!
+
+Sat Jun 11 16:04:03 2011  Kouhei Sutou  <kou@cozmixng.org>
+
+	* lib/rexml/parsers/xpathparser.rb
+	  (REXML::Parsers::XPathParser#parse),
+	  test/rexml/test_elements.rb
+	  (ElementsTester::test_each_with_frozen_condition):
+	  don't modify original XPath. fixes #4164
+	  Reported by Pavel Shved. Thanks!!!
+
 Mon Jun  6 09:39:43 2011  Aaron Patterson <aaron@tenderlovemaking.com>
 
 	* ext/psych/parser.c (parse): release event objects to plug memory
diff --git a/lib/rexml/parsers/xpathparser.rb b/lib/rexml/parsers/xpathparser.rb
index 2db37a2578..a37dbdd4b6 100644
--- a/lib/rexml/parsers/xpathparser.rb
+++ b/lib/rexml/parsers/xpathparser.rb
@@ -17,8 +17,9 @@ module REXML
       end
 
       def parse path
+        path = path.dup
         path.gsub!(/([\(\[])\s+/, '\1') # Strip ignorable spaces
-        path.gsub!( /\s+([\]\)])/, '\1' )
+        path.gsub!( /\s+([\]\)])/, '\1')
         parsed = []
         path = OrExpr(path, parsed)
         parsed
diff --git a/test/rexml/test_elements.rb b/test/rexml/test_elements.rb
index 210004a1c0..7d2839e261 100644
--- a/test/rexml/test_elements.rb
+++ b/test/rexml/test_elements.rb
@@ -84,6 +84,15 @@ class ElementsTester < Test::Unit::TestCase
     assert_equal 7, count
   end
 
+  def test_each_with_frozen_condition
+    doc = Document.new('<books><book name="Ruby"/><book name="XML"/></books>')
+    names = []
+    doc.root.elements.each('book'.freeze) do |element|
+      names << element.attributes["name"]
+    end
+    assert_equal(["Ruby", "XML"], names)
+  end
+
   def test_elements_to_a
     doc = Document.new '<a>sean<b/>elliott<c/></a>'
     assert_equal 2, doc.root.elements.to_a.size
diff --git a/version.h b/version.h
index 99774e89c3..86d2a215c1 100644
--- a/version.h
+++ b/version.h
@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.2"
-#define RUBY_PATCHLEVEL 277
+#define RUBY_PATCHLEVEL 278
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 1