Add alt attr to site logo in masthead (#2824)

Co-authored-by: Michael Rose <[email protected]>

Author: iBug

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## Unreleased
 
+### Enhancements
+
+- Add `alt` attribute to site logo. [#2529](https://github.com/mmistakes/minimal-mistakes/issues/2529) [#2824](https://github.com/mmistakes/minimal-mistakes/issues/2824)
+
 ### Bug Fixes
 
 - Remove Google Search CSS. [#2852](https://github.com/mmistakes/minimal-mistakes/issues/2852) [#2855](https://github.com/mmistakes/minimal-mistakes/pull/2855)

_includes/masthead.html

@@ -5,7 +5,7 @@
     <div class="masthead__menu">
       <nav id="site-nav" class="greedy-nav">
         {% unless logo_path == empty %}
-          <a class="site-logo" href="{{ '/' | relative_url }}"><img src="{{ logo_path | relative_url }}" alt=""></a>
+          <a class="site-logo" href="{{ '/' | relative_url }}"><img src="{{ logo_path | relative_url }}" alt="{{ site.masthead_title | default: site.title }}"></a>
         {% endunless %}
         <a class="site-title" href="{{ '/' | relative_url }}">
           {{ site.masthead_title | default: site.title }}

docs/_docs/18-history.md

@@ -11,6 +11,10 @@ toc: false
 
 ## Unreleased
 
+### Enhancements
+
+- Add `alt` attribute to site logo. [#2529](https://github.com/mmistakes/minimal-mistakes/issues/2529) [#2824](https://github.com/mmistakes/minimal-mistakes/issues/2824)
+
 ### Bug Fixes
 
 - Remove Google Search CSS. [#2852](https://github.com/mmistakes/minimal-mistakes/issues/2852) [#2855](https://github.com/mmistakes/minimal-mistakes/pull/2855)