Replace | with HTML entity when used as title separator

ref: mmistakes#760, mmistakes#1506

CHANGELOG.md

@@ -22,6 +22,7 @@
 * Remove misleading underline hover state on feature row items.
 * Properly escape quotes in `site.social.name` and `site.name`. [#1485](https://github.com/mmistakes/minimal-mistakes/pull/1485)
 * Fix typo in upgrading documentation. [#1487](https://github.com/mmistakes/minimal-mistakes/pull/1487)
+* Replace `|` with HTML entity when used as title separator. [#760](https://github.com/mmistakes/minimal-mistakes/issues/760)
 
 ## [4.9.0](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.9.0)
 

_includes/seo.html

@@ -4,8 +4,12 @@
 {%- endif -%}
 {%- assign seo_url = seo_url | default: site.github.url -%}
 
+{% if site.title_separator %}
+  {% assign title_separator = site.title_separator | default: '-' | replace: '|', '|' %}
+{% endif %}
+
 {%- if page.title -%}
-  {%- assign seo_title = page.title | append: " " | append: site.title_separator | append: " " | append: site.title -%}
+  {%- assign seo_title = page.title | append: " " | append: title_separator | append: " " | append: site.title -%}
 {%- endif -%}
 
 {%- if seo_title -%}
@@ -50,7 +54,7 @@
   {%- assign og_type = "website" -%}
 {%- endif -%}
 
-<title>{{ seo_title | default: site.title }}{% if paginator %}{% unless paginator.page == 1 %} {{ site.title_separator }} {{ site.data.ui-text[site.locale].page | default: "Page" }} {{ paginator.page }}{% endunless %}{% endif %}</title>
+<title>{{ seo_title | default: site.title }}{% if paginator %}{% unless paginator.page == 1 %} {{ title_separator }} {{ site.data.ui-text[site.locale].page | default: "Page" }} {{ paginator.page }}{% endunless %}{% endif %}</title>
 <meta name="description" content="{{ seo_description }}">
 
 {% if author.name %}

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: 2018-01-18T10:26:34-05:00
+last_modified_at: 2018-01-29T20:38:03-05:00
 toc: true
 ---
 
@@ -32,6 +32,7 @@ toc: true
 * Remove misleading underline hover state on feature row items.
 * Properly escape quotes in `site.social.name` and `site.name`. [#1485](https://github.com/mmistakes/minimal-mistakes/pull/1485)
 * Fix typo in upgrading documentation. [#1487](https://github.com/mmistakes/minimal-mistakes/pull/1487)
+* Replace `|` with HTML entity when used as title separator. [#760](https://github.com/mmistakes/minimal-mistakes/issues/760)
 
 ## [4.9.0](https://github.com/mmistakes/minimal-mistakes/releases/tag/4.9.0)