Shopify - shortcode-readmore

shortcode-readmore.liquid

{%- comment -%}
  @param before_readmore {Boolean}
    Output the contents of the text before the readmore shortcode
{%- endcomment -%}
{%- assign readmore_split = text | split: '<!-- more -->' -%}
{%- if before_readmore -%}{{- readmore_split[0] -}}{%- else -%}{{- readmore_split[1] -}}{%- endif -%}