<!-- Provides unofficial GitHub card function for include.author variable -->

{% assign author_no_at_sign = include.author | strip_html | remove_first: "@" %}

{% assign at_sign = include.author | strip_html | replace: author_no_at_sign %}

{% if include.theme %}

{% assign extra_classes = "user-card-" | append: include.theme %}

{% endif %}

<!-- first function does not work and truncate function returns trailing "..." -->

{% assign test_at_sign_is_first = include.author | truncate: 4 | replace: "@" | size %}

<!-- this looks weird, but it was the only way I could figure out how to test

that the first character of include.author is "@" -->

{% if at_sign.size > 0 and test_at_sign_is_first == 3 %}

<div class="user-card {{ extra_classes }}" data-card-user="{{author_no_at_sign}}"><div class="user-card-name">{{ include.author }}</div></div><br/>

{% else %}

<div class="user-card {{ extra_classes }}"><div class="user-card-name">{{ include.author }}</div></div>

{% endif %}