{%- assign user = include.user -%}
{% assign user-data = site.users | where: 'minecraft-id', user | first %}
{%- if user-data -%}
{%- if user-data.name -%}
{{include.prepend}}{{ user-data.name}}
{%- else -%}
{{include.prepend}}{{ user }}
{%- endif -%}
{%- else -%}
{{ user | prepend: include.prepend }}
{%- endif -%}