[xml] one more xpath patch

[Aleksey Sanin <aleksey aleksey com>]

Hi, Daniel!!./ap

I have one more xpath patch but I would like to have you review
before commiting it. Consider the following xpath expressions:
    string(self::node())
    string()
According to http://www.w3.org/TR/xpath#node-tests both these
expressions should be totaly equvivalent:
    "A node test node() is true for any node of any type whatsoever."
However, if the current node is namespace then LibXML returns
an empty string for the first _expression_ and correct value (href) for
the second one. I found that the same problem happens when 
node is an attribute. The suggested patch removes all checks 
for the "::node()" function (type == NODE_TYPE_NODE) as it is
required by xpath spec. Please let me know your opinion on this.


Aleksey.


Index: xpath.c
===================================================================
RCS file: /cvs/gnome/gnome-xml/xpath.c,v
retrieving revision 1.193
diff -c -r1.193 xpath.c
*** xpath.c    31 May 2002 04:24:13 -0000    1.193
--- xpath.c    31 May 2002 19:37:19 -0000
***************
*** 8732,8745 ****
                      STRANGE return(t);
                  case NODE_TEST_TYPE:
                      if ((cur->type == type) ||
!                         ((type == NODE_TYPE_NODE) &&
!                          ((cur->type == XML_DOCUMENT_NODE) ||
!                           (cur->type == XML_HTML_DOCUMENT_NODE) ||
!                           (cur->type == XML_ELEMENT_NODE) ||
!                           (cur->type == XML_PI_NODE) ||
!                           (cur->type == XML_COMMENT_NODE) ||
!                           (cur->type == XML_CDATA_SECTION_NODE) ||
!                           (cur->type == XML_TEXT_NODE))) ||
              ((type == NODE_TYPE_TEXT) &&
               (cur->type == XML_CDATA_SECTION_NODE))) {
  #ifdef DEBUG_STEP
--- 8732,8738 ----
                      STRANGE return(t);
                  case NODE_TEST_TYPE:
                      if ((cur->type == type) ||
!                         (type == NODE_TYPE_NODE) ||
              ((type == NODE_TYPE_TEXT) &&
               (cur->type == XML_CDATA_SECTION_NODE))) {
  #ifdef DEBUG_STEP