Fix site.logo false positives

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ### Bug Fixes
 
+- Fix `site.logo` false positives. [#2026](https://github.com/mmistakes/minimal-mistakes/pull/2026#issuecomment-455770730)
 - Add empty `alt` attribute to `site.logo` image. [#2035](https://github.com/mmistakes/minimal-mistakes/pull/2035)
 
 ## [4.15.1](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.15.1)

_includes/masthead.html

@@ -1,14 +1,16 @@
 {% if site.logo contains "://" %}
   {% capture logo_path %}{{ site.logo }}{% endcapture %}
 {% else %}
-  {% capture logo_path %}{{ site.logo | relative_url }}{% endcapture %}
+  {% capture logo_path %}{{ site.logo }}{% endcapture %}
 {% endif %}
 
 <div class="masthead">
   <div class="masthead__inner-wrap">
     <div class="masthead__menu">
       <nav id="site-nav" class="greedy-nav">
-        {% if site.logo %}<a class="site-logo" href="{{ '/' | relative_url }}"><img src="{{ logo_path }}" alt=""></a>{% endif %}
+        {% unless logo_path == empty %}
+          <a class="site-logo" href="{{ '/' | relative_url }}"><img src="{{ logo_path | relative_url }}" alt=""></a>
+        {% endunless %}
         <a class="site-title" href="{{ '/' | relative_url }}">{{ site.masthead_title | default: site.title }}</a>
         <ul class="visible-links">
           {%- for link in site.data.navigation.main -%}

docs/_docs/18-history.md

@@ -4,7 +4,7 @@ permalink: /docs/history/
 excerpt: "Change log of enhancements and bug fixes made to the theme."
 sidebar:
   nav: docs
-last_modified_at: 2019-01-23T19:35:45-05:00
+last_modified_at: 2019-01-23T20:04:54-05:00
 toc: true
 ---
 
@@ -12,6 +12,7 @@ toc: true
 
 ### Bug Fixes
 
+- Fix `site.logo` false positives. [#2026](https://github.com/mmistakes/minimal-mistakes/pull/2026#issuecomment-455770730)
 - Add empty `alt` attribute to `site.logo` image. [#2035](https://github.com/mmistakes/minimal-mistakes/pull/2035)
 
 ## [4.15.1](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.15.1)