Fix where_exp for Jekyll < 4.0

'and' and 'or' are new in Jekyll 4.0.
Ref: https://stackoverflow.com/posts/comments/111965719

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 - "You may also enjoy" no longer recommends hidden posts. [#4653](https://github.com/mmistakes/minimal-mistakes/issues/4653)
 - Replaced dead link to "Viewport and Media Queries" slides. [#4421](https://github.com/mmistakes/minimal-mistakes/discussions/4421)
+- Fix broken `where_exp` in `lunr-store.js` for Jekyll < 4.0. [#4808](https://github.com/mmistakes/minimal-mistakes/issues/4808)
 
 ### Enhancements
 

assets/js/lunr/lunr-store.js

@@ -47,7 +47,7 @@ var store = [
       }{%- unless forloop.last and l -%},{%- endunless -%}
     {%- endfor -%}
   {%- endfor -%}{%- if site.lunr.search_within_pages -%},
-  {%- assign pages = site.pages | where_exp:'doc','doc.search != false and doc.title != null' -%}
+  {%- assign pages = site.pages | where_exp: 'doc', 'doc.search != false' | where_exp: 'doc', 'doc.title != null' -%}
   {%- for doc in pages -%}
     {%- if forloop.last -%}
       {%- assign l = true -%}

docs/_docs/18-history.md

@@ -5,7 +5,7 @@ permalink: "/docs/history/"
 excerpt: Change log of enhancements and bug fixes made to the theme.
 sidebar:
   nav: docs
-last_modified_at: '2024-04-28T00:38:38+08:00'
+last_modified_at: '2024-04-28T00:56:01+08:00'
 toc: false
 ---
 
@@ -21,6 +21,7 @@ toc: false
 
 - "You may also enjoy" no longer recommends hidden posts. [#4653](https://github.com/mmistakes/minimal-mistakes/issues/4653)
 - Replaced dead link to "Viewport and Media Queries" slides. [#4421](https://github.com/mmistakes/minimal-mistakes/discussions/4421)
+- Fix broken `where_exp` in `lunr-store.js` for Jekyll < 4.0. [#4808](https://github.com/mmistakes/minimal-mistakes/issues/4808)
 
 ### Enhancements