{% assign my_array = "one|two|three" | split: "|" %}

---
my_array:
  - one
  - two
  - three
---

{{ page.my_array }}

{{ layout.style }}

{% capture my_array %}
one
two
three
{% endcapture %}

{% assign my_array = my_array | strip | newline_to_br | strip_newlines | split: "<br />" %}