GitHub: fix #18

Reported by Mirko Budszuhn. Thanks!!!

https://github.com/ruby/rexml/commit/0dca2a2ba0

GitHub: fix #17

There is a bug when they are used against node set. They should return
boolean value but they returned node set.

Reported by Mirko Budszuhn. Thanks!!!

https://github.com/ruby/rexml/commit/a02bf38440

[ruby-list:50733]

Reported by Yasuhiro KIMURA. Thanks!!!

https://github.com/ruby/rexml/commit/8f3c5c176a

It breaks backward compatibility than I thought. So it's disabled by
default. It means that REXML's XPath processor isn't compatible with
XPath 1.0. But it will be acceptable for users.

We can enable it by specifying "strict: true" to
REXML::XPathParser.new explicitly.

* lib/rexml/xpath.rb,
  lib/rexml/xpath_parser.rb: Accept "strict: true" option.

* test/rexml/test_contrib.rb,
  test/rexml/xpath/test_base.rb: Use not XPath 1.0 compatible behavior.

* test/rexml/test_jaxen.rb: Use XPath 1.0 compatible behavior.

* test/rss/test_1.0.rb,
  test/rss/test_dublincore.rb,
  spec/ruby/library/rexml/element/namespace_spec.rb,
  spec/ruby/library/rexml/element/namespaces_spec.rb,
  spec/ruby/library/rexml/element/prefixes_spec.rb: Enable again.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63278 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

The position should be counted for each nodeset but the previous
implementation counts position for union-ed nodeset.

For example, "/a/*/*[1]" should be matched to "<c1/>" and "<c2/>" with
the following XML.

    <a>
      <b>
        <c1/>
      </b>
      <b>
        <c2/>
      </b>
    </a>

But the previous implementation just returns only "<c1/>".

* lib/rexml/element.rb (REXML::Attributes#each_attribute):
  Support Enumerator for no block use.

* lib/rexml/element.rb (REXML::Attributes#each):
  Support Enumerator for no block use.

* lib/rexml/functions.rb (REXML::Functions.string):
  Support NaN again.

* lib/rexml/xpath_parser.rb: Re-implement "Step" evaluator.
  It should evaluate "AxisSpecifier", "NodeTest" and "Predicate" in one
  step to respect position for each nodeset.

* test/rexml/test_jaxen.rb: Enable more tests. Remained tests should
  be also enabled but it'll not be near future.

* test/rexml/xpath/test_base.rb: Fix expected value.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63237 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

It doesn't mean that all elements which name "ELEMENT_NAME" with any
namespace URI including null namespace URI. It means that all elements
which name "ELEMENT_NAME" with null namespace URI.

https://www.w3.org/TR/1999/REC-xpath-19991116/#NT-NodeTest

> if the QName does not have a prefix, then the namespace URI is null
> (this is the same way attribute names are expanded).

We need to use "*[local-name()='#{ELEMENT_NAME}']" for all elements
which name "ELEMENT_NAME" with any namespace URI including null
namespace URI in XPath 1.0. But it's inconvenient. So this change
includes "*:#{LOCAL_NAME}" syntax support that is introduced since
XPath 2.0.

* lib/rexml/parsers/xpathparser.rb: Support "*:#{LOCAL_NAME}" syntax that
  is introduced since XPath 2.0.

* lib/rexml/xpath_parser.rb:
  * Fix namespace URI processing for "#{ELEMENT_NAME}". Now,
    "#{ELEMENT_NAME}" doesn't accept elements with null namespace URI.
  * Add "*:#{LOCAL_NAME}" support.

* test/rexml/test_contrib.rb,
  test/rexml/test_core.rb,
  test/rexml/xpath/test_base.rb: Follow this change.

* test/rexml/test_jaxen.rb: Fix namespace processing.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63236 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rexml/xpath/test_base.rb: Use here document for readability.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63218 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rexml/parsers/xpathparser.rb: Ignore white spaces in relative
location path.

test/rexml/xpath/test_base.rb: Add more test patterns and use more
debug friendly assertion style.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63204 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rexml/xpath/test_base.rb: Use constant value for the expected value.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63203 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rexml/xpath/test_base.rb: Expand loop assertion and stop to checking
just the first value.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63202 b2dd03c8-39d4-4d8f-98ff-823fe69b080e