Expression with absolute path is not evaluated correctly for nested repeats

[sadiqkhoja]

Web Forms version and package (e.g. are you using web-forms or only the engine?)

Web Forms: v0.4.0-53-gc9a0ee3d

Browser and version

Chrome 130.0.6723.70

Device used

MacOS 14.5

Problem description

In the following Form calculate of n1 just reads the value of q1s from the first instance of root_repeat.

Steps to reproduce the problem

Form Definition

<?xml version="1.0"?>
<h:html xmlns="http://www.w3.org/2002/xforms" xmlns:h="http://www.w3.org/1999/xhtml" xmlns:ev="http://www.w3.org/2001/xml-events" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:jr="http://openrosa.org/javarosa" xmlns:orx="http://openrosa.org/xforms" xmlns:odk="http://www.opendatakit.org/xforms">
    <h:head>
        <h:title>joinnestedrepeat</h:title>
        <model odk:xforms-version="1.0.0">
            <instance>
                <data id="joinnestedrepeat" version="20241101142134">
                    <root_repeat jr:template="">
                        <nested jr:template="">
                            <q1/>
                        </nested>
                        <n1/>
                    </root_repeat>
                    <root_repeat>
                        <nested>
                            <q1/>
                        </nested>
                        <n1/>
                    </root_repeat>
                    <meta>
                        <instanceID/>
                    </meta>
                </data>
            </instance>
            <bind nodeset="/data/root_repeat/nested/q1" type="string"/>
            <bind nodeset="/data/root_repeat/n1" readonly="true()" type="string" calculate="join(',', /data/root_repeat[position(..)]/nested/q1)"/>
            <bind nodeset="/data/meta/instanceID" type="string" readonly="true()" jr:preload="uid"/>
        </model>
    </h:head>
    <h:body>
        <group ref="/data/root_repeat">
            <label>root_repeat</label>
            <repeat nodeset="/data/root_repeat">
                <group ref="/data/root_repeat/nested">
                    <label>nested</label>
                    <repeat nodeset="/data/root_repeat/nested">
                        <input ref="/data/root_repeat/nested/q1">
                            <label>q1</label>
                        </input>
                    </repeat>
                </group>
                <input ref="/data/root_repeat/n1">
                    <label>values of q1</label>
                </input>
            </repeat>
        </group>
    </h:body>
</h:html>

Expected behavior

Value of n1 in each repeat instance should be equal to the join of all q1s in the same instance.

Other information

If I change calculate to ../nested/q1 then it works correctly.

This could be related to #101

[lognaturel]

Whoops, just realized that this looks like expected behavior.

/data/root_repeat[position(..)] is identical to /data/root_repeat[1]. I think the intent here was /data/root_repeat[position() = position(current()/..)] (or using the shortcut syntax: /data/root_repeat[position(current()/..)])