Roll libxml to 2.9.3

third_party/libxml/src/relaxng.c

 /*
  * relaxng.c : implementation of the Relax-NG handling and validity checking
  *
  * See Copyright for the status of this software.
  *
  * Daniel Veillard <veillard@redhat.com>
  */
 
 /**
  * TODO:
@@ skipping 3801 matching lines @@
                 ret = 0;
             }
         } else {
             ret = 1;
         }
     } else if (def1->type == XML_RELAXNG_TEXT) {
         if (def2->type == XML_RELAXNG_TEXT)
             return (0);
         return (1);
     } else if (def1->type == XML_RELAXNG_EXCEPT) {
-        TODO ret = 0;
+        ret = xmlRelaxNGCompareNameClasses(def1->content, def2);
+        if (ret == 0)
+            ret = 1;
+        else if (ret == 1)
+            ret = 0;
     } else {
         TODO ret = 0;
     }
     if (ret == 0)
         return (ret);
     if ((def2->type == XML_RELAXNG_ELEMENT) ||
         (def2->type == XML_RELAXNG_ATTRIBUTE)) {
         if (def2->name != NULL) {
             node.name = def2->name;
         } else {
@@ skipping 6019 matching lines @@
     if (define->name != NULL)
         xmlGenericError(xmlGenericErrorContext, "%s ", define->name);
     if ((node != NULL) && (node->name != NULL))
         xmlGenericError(xmlGenericErrorContext, "on %s\n", node->name);
     else
         xmlGenericError(xmlGenericErrorContext, "\n");
 #endif
     ctxt->depth++;
     switch (define->type) {
         case XML_RELAXNG_EMPTY:
-            node = xmlRelaxNGSkipIgnored(ctxt, node);
+            xmlRelaxNGSkipIgnored(ctxt, node);
             ret = 0;
             break;
         case XML_RELAXNG_NOT_ALLOWED:
             ret = -1;
             break;
         case XML_RELAXNG_TEXT:
             while ((node != NULL) &&
                    ((node->type == XML_TEXT_NODE) ||
                     (node->type == XML_COMMENT_NODE) ||
                     (node->type == XML_PI_NODE) ||
@@ skipping 1171 matching lines @@
      * TODO: build error codes
      */
     if (ret == -1)
         return (1);
     return (ret);
 }
 
 #define bottom_relaxng
 #include "elfgcchack.h"
 #endif /* LIBXML_SCHEMAS_ENABLED */