Nested {foreach} mucks up @index, @iteration, @first, @last of parent {foreach}

[rsdifu]

smarty-foreach-test.php

<?php

header("Content-Type: text/plain");

$smarty = new Smarty();
// Do your smarty setup

$array = array(
    array(
        "var" => "Parent 1 var",
        "sub" => array(
            array("var" => "Sub 1 var"),
            array("var" => "Sub 2 var")
        )
    ),
    array(
        "var" => "Parent 2 var",
        "sub" => array(
            array("var" => "Sub 1 var"),
            array("var" => "Sub 2 var")
        )
    ),
);
$smarty->assign("array", $array);
$smarty->display("smarty-foreach-test.tpl");

smarty-foreach-test.tpl

Test 1: No Nested {literal}{foreach}{/literal}
---------------------------
{foreach $array as $item}
    {$item@iteration}: {$item.var}    <--- Note @iteration (sequential, as expected)
{if $item@last}
        Last! (parent)
{/if}
{/foreach}

Test 2: With Nested {literal}{foreach}{/literal}
-----------------------------
{foreach $array as $item}
    {$item@iteration}: {$item.var}    <--- Note @iteration (not sequential)
{foreach $item.sub as $sub}
        {$sub@iteration}: {$sub.var}
{if $sub@last}
            Last! (sub)
{/if}
{/foreach}
{if $item@last}
        Last! (parent)
{/if}
{/foreach}

        ^--- Note the lack of the "Last! (parent)"

Output

Test 1: No Nested {foreach}
---------------------------
    1: Parent 1 var    <--- Note @iteration (sequential, as expected)
    2: Parent 2 var    <--- Note @iteration (sequential, as expected)
        Last! (parent)

Test 2: With Nested {foreach}
-----------------------------
    1: Parent 1 var    <--- Note @iteration (not sequential)
        1: Sub 1 var
        2: Sub 2 var
            Last! (sub)
    3: Parent 2 var    <--- Note @iteration (not sequential)
        1: Sub 1 var
        2: Sub 2 var
            Last! (sub)

        ^--- Note the lack of the "Last! (parent)"

[rsdifu]

Resolved in 3.1.24. Must have missed it in the commits. Remember kids, don't stay up late and debug.