fix non-English characters query: #106, #99

Author: zhengchun

parse.go

@@ -868,20 +868,18 @@ func (s *scanner) scanNumber() float64 {
 
 func (s *scanner) scanString() string {
 	var (
-		c   = 0
 		end = s.curr
 	)
 	s.nextChar()
 	i := s.pos - s.currSize
-	if s.currSize > 1 {
-		c++
-	}
+	c := s.currSize
 	for s.curr != end {
 		if !s.nextChar() {
 			panic(errors.New("xpath: scanString got unclosed string"))
 		}
 		c += s.currSize
 	}
+	c -= 1
 	s.nextChar()
 	return s.text[i : i+c]
 }

xpath_expression_test.go

@@ -155,3 +155,12 @@ func TestBUG_104(t *testing.T) {
 	test_xpath_count(t, book_example, `//author[1]`, 4)
 	test_xpath_values(t, book_example, `//author[1]/text()`, "Giada De Laurentiis", "J K. Rowling", "James McGovern", "Erik T. Ray")
 }
+
+func TestNonEnglishPredicateExpression(t *testing.T) {
+	// https://github.com/antchfx/xpath/issues/106
+	doc := createNode("", RootNode)
+	n := doc.createChildNode("h1", ElementNode)
+	n.addAttribute("id", "断点")
+	n.createChildNode("Hello,World!", TextNode)
+	test_xpath_count(t, doc, "//h1[@id='断点']", 1)
+}