的XPath 1 - 以下同胞和只剩下一前同輩（不貪婪匹配）

Question

敲我的頭靠在內表面上，這個之間的獨家兄弟匹配：

<table class="magic"> 
    <tbody> 
    <!-- previous sections here --> 

    <!-- uninteresting section example begin --> 
    <tr class="head"> 
     <th colspan="2">Spain</th> 
    </tr> 
    <!-- ... --> 
    <tr class="section-break"></tr> 
    <!-- uninteresting section example end --> 

    <!-- begin interesting section (position not fixed) --> 
    <tr class="head"> 
     <th colspan="2">United States</th> 
    </tr> 
    <tr></tr> <!-- match here begin (length not fixed) --> 
    <tr></tr> 
    <!-- ... --> 
    <tr></tr> <!-- match here end --> 
    <tr class="section-break"></tr> 
    <!-- end interesting section --> 

    <!-- next sections --> 
    <!-- ... --> 
    <tr class="section-break"></tr> 
    <!-- ... --> 
    <tr class="section-break"></tr> 
    <!-- ... --> 
    </tbody> 
<table> 

到目前爲止：

/table[@class="magic"]/tbody/tr[following-sibling::tr/th[text()="United States"] and preceding-sibling::tr[contains(@class,"section-break")][12345]] 

^--- evil magic constant 12345: must not be hard-coded, probably some sort of `count()`constraint or Kayessian ? 

但是如何在United States之後找到第一個section-break？

Answer 1

//table[@class="magic"]//tr[@class="head" and ./th[contains(., "United States")]]/following-sibling::tr[@class="section-break"][1]