{%- assign prefix2 = include.url | slice: 0, 2 -%} {%- assign prefix7 = include.url | slice: 0, 7 -%} {%- assign prefix8 = include.url | slice: 0, 8 -%} {%- if prefix2 == '//' or prefix7 == 'http://' or prefix8 == 'https://' -%} {%- else -%} {%- endif -%}