Partials in custom data

[Stadly]

Consider the following template:

layouts/default.html:

<!-- static part 1 -->
{{{section1}}}
<!-- static part 2 -->
{{{section2}}}
<!-- static part 3 -->
{{> body}}
<!-- static part 4 -->

pages/newsletter.html:

---
section1: |
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
    <spacer size="12"></spacer>
    <p>Etiam et laoreet nisi.</p>
section2: |
    <p>Sed et leo blandit, auctor odio.</p>
    {{> delimiter}}
    <p>Mauris eu auctor nibh, a luctus nibh. Cras.</p>
layout: default
---
<p>Integer lacinia hendrerit nulla, eget feugiat diam elementum.</p>
<spacer size="24"></spacer>
<p>Ut consequat malesuada interdum. Pellentesque consequat.</p>
{{> delimiter}}
<p>Proin magna turpis.</p>

partials/delimiter.html:

<hr/>

This is compiled into the following email:

<!-- static part 1 -->
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
<table class="spacer"><tbody><tr><td height="12px" style="font-size:12px;line-height:12px;">&#xA0;</td></tr></tbody></table> 
<p>Etiam et laoreet nisi.</p>

<!-- static part 2 -->
<p>Sed et leo blandit, auctor odio.</p>
{{> delimiter}}
<p>Mauris eu auctor nibh, a luctus nibh. Cras.</p>

<!-- static part 3 -->
<p>Integer lacinia hendrerit nulla, eget feugiat diam elementum.</p>
<table class="spacer"><tbody><tr><td height="24px" style="font-size:24px;line-height:24px;">&#xA0;</td></tr></tbody></table> 
<p>Ut consequat malesuada interdum. Pellentesque consequat.</p>
<hr>

<p>Proin magna turpis.</p>

<!-- static part 4 -->

As you can see, the <spacer> element is compiled into a <table class="spacer"> element both in the custom data section1 and the body of the email. Great!

However, the partial partials/delimiter.html is only compiled in the body of the email, and not in the custom data section2.

It would be really useful if partials were also supported in custom data.