Selecting sibling nodes using position() - dom

Question

I've got a trouble selecting divs following specific title in code:
<div>
<h2>Section 1</h2>
<div>Item 1</div>
<div>Item 2</div>
<h2>Section 2</h2>
<div>Item 3</div>
<div>Item 4</div>
<div>Item 5</div>
</div>
I was trying to get the nodes using preceding-sibling somehow like this:
//div/div[preceding-sibling::h2[1][position()=1]]
I need all divs which have the NEAREST preceding h2 sibling on position 1, but I'm still getting all 5 items.
Can you tell me what am I doing wrong?
Example output with position 1 (section 1):
<div>Item 1</div>
<div>Item 2</div>
Example output with position 2 (section 2):
<div>Item 3</div>
<div>Item 4</div>
<div>Item 5</div>

Answer 1

This can be a tricky thing to do, but one approach you can use is count():
//div/div[count(preceding-sibling::h2) = 1]
The reason your attempt with position() didn't work is that position() is evaluated relative to the current selection. With preceding-sibling::h2[1][position()=1], you are selecting the nearest h2 and then selecting the first node in that set.