Bootstrap/site/_includes/example.html

{%- comment -%}
Usage: {% include example.html content=markup %},
where content is a capture with the HTML content
id - null (default)
class - "bd-example" (default)
optional: hide_preview - disabled (default)
optional: hide_markup - disabled (default)
{%- endcomment -%}

{%- assign preview_id = include.id -%}
{%- assign preview_class = include.class -%}

{%- if include.hide_preview == null -%}
<div{% if preview_id %} id="{{ preview_id }}"{% endif %} class="bd-example{% if preview_class %} {{ preview_class }}{% endif %}">
  {{- include.content -}}
</div>
{%- endif -%}

{%- if include.hide_markup == null -%}
  {%- highlight html -%}
    {%- if include.content contains 'data-src="holder.js' -%}
      {%- assign modified_content = include.content
        | replace: 'data-src="holder.js', 'src="✂️holder.js'
        | replace: '" ', '✂️" '
        | split: '✂️' -%}

      {%- for content_chunk in modified_content -%}
        {%- if content_chunk contains 'holder.js' -%}
          {{- "..." -}}
        {%- else -%}
          {{- content_chunk -}}
        {%- endif -%}
      {%- endfor -%}
    {%- else -%}
      {{- include.content -}}
    {%- endif -%}
  {%- endhighlight -%}
{%- endif -%}