Merge branch 'jeffreytse:master' into up_cdn_mathjax

README.md

@@ -86,6 +86,7 @@ I will respect your crucial support and say THANK YOU!
 - Uses font awesome 5 for icons.
 - Beautiful page banner with image and video.
 - Beautiful Syntax Highlight using [highlight.js][highlight-js].
+- Beautiful image gallery previewer using [PhotoSwipe 5][photoswipe-5].
 - RSS support using [Jekyll Feed][jekyll-feed] gem.
 - Optimized for search engines using [Jekyll Seo Tag][jekyll-seo-tag] gem.
 - Sitemap support using [Jekyll Sitemap][jekyll-sitemap] gem.
@@ -95,6 +96,7 @@ I will respect your crucial support and say THANK YOU!
 - Diagram (PlantUML, Mermaid) support using [Jekyll Spaceship][jekyll-spaceship] gem.
 - Google Translation support.
 - New post tag support.
+- Pin post tag support.
 
 Also, visit the [Live Demo][yat-live-demo] site for the theme.
 
@@ -157,6 +159,10 @@ And then execute:
 $ bundle
 ```
 
+### Forking/Cloning the project
+
+You need to update the option of github workflow file `.github/workflows/build-jekyll.yml`, especially to ensure the value of `jekyll_baseurl` is correct.
+
 ### GitHub Pages without limitation
 
 GitHub Pages runs in `safe` mode and only allows [a set of whitelisted plugins/themes](https://pages.github.com/versions/). **In other words, the third-party gems will not work normally**.
@@ -198,3 +204,4 @@ This theme is licensed under the [MIT license](https://opensource.org/licenses/m
 [jekyll-sitemap]: https://github.com/jekyll/jekyll-sitemap
 [jekyll-feed]: https://github.com/jekyll/jekyll-feed
 [highlight-js]: https://github.com/highlightjs/highlight.js
+[photoswipe-5]: https://photoswipe.com/

_includes/views/pagination-item.html

@@ -42,7 +42,7 @@ <h2 class="post-title">
     <span class="post-reading-time left-vsplit"><i class="fa fa-clock-o"></i> {{ reading_time }}</span>
   </div>
   <div class="post-excerpt">
-    {%- if post_image -%}
+    {%- if post_image and post_image != 'NO_EXCERPT_IMAGE' -%}
     <a  class="post-image" href="{{ post_url }}" style="flex: 0 1 {{ image_width }}">
       <div style="background-image: url({{ post_image | relative_url }}); height: {{ image_height }}"></div>
     </a>

_posts/2015-02-28-test-markdown.md

@@ -74,3 +74,8 @@ You can add notification, warning and error boxes like this:
 
 {: .box-error}
 **Error:** This is an error box.
+
+### Emoji
+
+This single quote code `inet:email:message:to` will not be parsed to emoji icon
+:+1:.

_posts/2017-06-10-quick-mardown-example.md

@@ -2,11 +2,14 @@
 layout: post
 title: Quick markdown example
 subtitle: This is a quick markdown example
+excerpt_image: https://github.com/jeffreytse/jekyll-theme-yat/assets/9413601/2ed22d49-90b1-4f7e-8e8f-b77b21dee505
 categories: markdown
 tags: [example]
 top: 2
 ---
 
+![banner](https://github.com/jeffreytse/jekyll-theme-yat/assets/9413601/2ed22d49-90b1-4f7e-8e8f-b77b21dee505)
+
 Paragraphs are separated by a blank line.
 
 2nd paragraph. *Italic*, **bold**, and `monospace`. Itemized lists