Can I use a Block inside an Include file? I have a _layout.html template which has both an include partial {% include '_partials/_header.html' %} and a block section (e.g. Content) for other templates to extend it.

Can I put another block section (e.g. Breadcrumb) inside the include file and use that in a template which extends _layout.html? So far it doesn't seem to work. If I move the Breadcrumb block from the include template into _layout.html it works fine, and when I move it back the content in the template extension does not show.
I believe it is possible @jack. Take a look at this working demo - http://twigfiddle.com/9rwjeo



Update:

On closer inspection the original example did not work. You can not have a block inside an include how you are describing.

I have update the twig fiddle with a work around though