title-case.liquid

{% comment %}
  Title case a string of text.
  Usage: {% include 'title-case' string: 'my string' %}
{% endcomment %}

{%- capture str -%}{%- endcapture -%}
{%- assign small_words = 'a|an|and|as|at|but|by|en|for|if|in|nor|of|on|or|per|the|to|vs|vs.|via|with' | split:'|' -%}
{%- assign string_parts = string | split: ' ' -%}
{%- for p in string_parts -%}
  {%- assign is_small = false -%}
  {%- for s in small_words -%}
    {% if p == s %}{%- assign is_small = true -%}{% endif %}
  {%- endfor -%}
  {%- capture str %}{% unless forloop.first %}{{ str }} {% endunless %}{% if is_small %}{{ p }}{% else %}{{ p | capitalize }}{% endif %}{% endcapture -%}
{%- endfor -%}{{- str -}}