Update for Zola 0.23.4

14 files changed, 61 insertions, 61 deletions

diff --git a/templates/404.html b/templates/404.html
index 70e1f91..02a4f54 100644
--- a/templates/404.html
+++ b/templates/404.html
@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{% set uglyurls = true %}{% endif %}{% endif %}
 
 {%- block seo -%}
diff --git a/templates/archive.html b/templates/archive.html
index 8bc0f27..3ec7d67 100644
--- a/templates/archive.html
+++ b/templates/archive.html
@@ -4,7 +4,7 @@ This Template can also be used as the rendering template for Sections, eg: examp
 #}
 
 {% extends "base.html" %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{% set uglyurls = true %}{% endif %}{% endif %}
 
 {%- block seo -%}
diff --git a/templates/base.html b/templates/base.html
index 97d2f4d..d359226 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -1,10 +1,10 @@
 {#- Load current language i18n data from .toml files in user's '/i18n' folder, use theme as fallback. -#}
 {%- set i18n = load_data(path="i18n/" ~ lang ~ '.toml', required=false) -%}
 {%- if not i18n -%}{%- set i18n = load_data(path="themes/abridge/i18n/" ~ lang ~ ".toml", required=false) -%}{%- endif -%}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library -%}{%- if config.extra.search_library == "offline" -%}{%- set uglyurls = true -%}{%- endif -%}{%- endif -%}
 <!DOCTYPE html>
-<html lang="{%- if lang != config.default_language %}{{ lang }}{% else %}{{ config.extra.language_code | default(value=lang) }}{% endif %}">
+<html lang="{%- if lang != config.default_language %}{{ lang }}{% else %}{{ (config.extra.language_code if config.extra.language_code else lang) }}{% endif %}">
 <head>
   {%- include "partials/head.html" -%}
   {#- SEO: title, description, etc -#}
@@ -45,7 +45,7 @@
         <div>
           <ul>
 
-            {%- set js_switcher=config.extra.js_switcher | default(value=true) %}
+            {%- set js_switcher=(config.extra.js_switcher if config.extra.js_switcher is defined else true) %}
             {%- if config.extra.menu %}
               {%- for i in config.extra.menu -%}
                 <li><a{%- if i.size %} class="{{ i.size }}"{% endif %} href="{%- if i.url is matching(pat="^http[s]?://") %}{{ i.url }}{%- else -%}{{ get_url(path=i.url, lang=lang, trailing_slash=i.slash) }}{%- if i.slash and uglyurls %}index.html{%- endif %}{%- endif %}"{% if i.blank %} target="_blank"{% endif %}>
@@ -78,7 +78,7 @@
             {%- endif %}
 
             {%- if js_switcher -%}
-              {%- set icon_adjust=config.extra.icon_adjust | default(value="svgs adjust") -%}
+              {%- set icon_adjust=(config.extra.icon_adjust if config.extra.icon_adjust else "svgs adjust") -%}
               {%- if icon_adjust -%}<li><i type="reset" id="mode" class="js {{ icon_adjust }}"></i>{%- else -%}<i type="reset" id="mode" class="js mode">&#9728;</i></li>{%- endif -%}
             {%- endif -%}
 
@@ -87,7 +87,7 @@
 
         <div>
           {%- if config.build_search_index %}
-          {%- set icon_search=config.extra.icon_search | default(value="svgs svgm search") %}
+          {%- set icon_search=(config.extra.icon_search if config.extra.icon_search else "svgs svgm search") %}
           <div>
             <form autocomplete=off class="js" name="goSearch" id="searchbox">
               <div class="searchd">
@@ -142,7 +142,7 @@
       {%- endif %}
 
       {#- Copyright START #}
-      {%- if config.extra.copyright | default(value=true) -%}
+      {%- if (config.extra.copyright if config.extra.copyright is defined else true) -%}
       {%- set current_year = now() | date(format="%Y") %}
       {%- set current_year = '<span id="year">' ~ current_year ~ '</span>' %}
 
@@ -160,7 +160,7 @@
       {%- endif -%}
       {#- Copyright END #}
 
-      {%- if config.extra.footer_credit | default(value=true) %}
+      {%- if (config.extra.footer_credit if config.extra.footer_credit is defined else true) %}
       {%- if config.extra.footer_credit_override %}
       {{ config.extra.footer_credit_override | safe }}
       {%- else %}
diff --git a/templates/categories/list.html b/templates/categories/list.html
index 966fd03..b9a3972 100644
--- a/templates/categories/list.html
+++ b/templates/categories/list.html
@@ -1,5 +1,5 @@
 {%- extends "base.html" -%}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library -%}{%- if config.extra.search_library == "offline" -%}{%- set uglyurls = true -%}{%- endif -%}{%- endif -%}
 {%- block seo -%}
   {{- super() -}}
diff --git a/templates/categories/single.html b/templates/categories/single.html
index de68a4f..47bb6cb 100644
--- a/templates/categories/single.html
+++ b/templates/categories/single.html
@@ -1,5 +1,5 @@
 {%- extends "base.html" -%}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library -%}{%- if config.extra.search_library == "offline" -%}{%- set uglyurls = true -%}{%- endif -%}{%- endif -%}
 {%- block seo -%}
   {{- super() -}}
diff --git a/templates/components/components.html b/templates/components/components.html
index e12b45f..7833747 100644
--- a/templates/components/components.html
+++ b/templates/components/components.html
@@ -1,9 +1,9 @@
 {% component translate(key: string, i18n, default="") %}
-{{- i18n[key] | default(value=default) | safe -}}
+{{- (i18n[key] if i18n[key] else default) | safe -}}
 {% endcomponent translate %}
 
 {%- component page_listing(page, config) %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{%- set uglyurls = true %}{%- endif %}{%- endif %}
         <div class="tpad">
           <a href="{{ page.permalink | safe}}{%- if uglyurls %}index.html{%- endif %}">{{ page.title | markdown(inline=true) | safe }}</a>
@@ -11,7 +11,7 @@
 {%- endcomponent page_listing %}
 
 {%- component series_link(inner, page, config) %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{%- set uglyurls = true %}{%- endif %}{%- endif %}
   {%- if inner.content == page.content %}
         <a class="scur" href="{{ inner.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ inner.title }}</a><br>
@@ -21,7 +21,7 @@
 {%- endcomponent series_link %}
 
 {%- component title_post(page, config) %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) %}
+{%- set uglyurls = (config.extra.uglyurls or false) %}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{%- set uglyurls = true %}{%- endif %}{%- endif %}
       <h1><a href="{{ page.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ page.title | markdown(inline=true) | safe }}</a></h1>
 {%- endcomponent title_post %}
@@ -31,7 +31,7 @@
 {%- set i18n = load_data(path="i18n/" ~ page.lang ~ '.toml', required=false) -%}
 {%- if not i18n -%}{%- set i18n = load_data(path="themes/abridge/i18n/" ~ page.lang ~ ".toml", required=false) -%}{%- endif -%}
 
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{%- set uglyurls = true -%}{%- endif %}{%- endif %}
       <span{%- if config.extra.meta_post?.size %} class="{{ config.extra.meta_post?.size }}"{% endif %}>
 
@@ -60,7 +60,7 @@
           {%- endif %}
 
         {#- ReadTime #}
-          {%- if config.extra.meta_post?.readtime %} {%- if config.extra.icon_read %}<i class="{{ config.extra.icon_read }}"></i> {% endif %} {{ page.reading_time }} {{ config.extra.meta_post?.readstring | default(value="min") }}
+          {%- if config.extra.meta_post?.readtime %} {%- if config.extra.icon_read %}<i class="{{ config.extra.icon_read }}"></i> {% endif %} {{ page.reading_time }} {{ (config.extra.meta_post?.readstring if config.extra.meta_post?.readstring else "min") }}
           {#- divider #}
           {%- if config.extra.meta_post?.date or config.extra.meta_post?.updated or config.extra.meta_post?.categories_tags %}
           {%- if config.extra.meta_post?.divider %}<span class="hpad">{{ config.extra.meta_post?.divider | safe }}</span>{%- else %} <span class="rpad"></span> {%- endif %}{%- endif %}{%- endif %}
@@ -92,7 +92,7 @@
 {%- endcomponent meta_post %}
 
 {%- component title_index(page, config) %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false)  -%}
+{%- set uglyurls = (config.extra.uglyurls or false)  -%}
 {%- if config.extra.search_library -%}{%- if config.extra.search_library == "offline" -%}{%- set uglyurls = true -%}{%- endif -%}{%- endif -%}
         <big>{% if config.extra.title_size_index %}<span class="{{ config.extra.title_size_index }}">{% endif %}<a href="{{ page.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ page.title | markdown(inline=true) | safe }}</a>{% if config.extra.title_size_index %}</span>{% endif %}</big>
 {%- endcomponent title_index -%}
@@ -101,7 +101,7 @@
 {#- Load current language i18n data from .toml files in user's '/i18n' folder, use theme as fallback. -#}
 {%- set i18n = load_data(path="i18n/" ~ page.lang ~ '.toml', required=false)  -%}
 {%- if not i18n  %}{%- set i18n = load_data(path="themes/abridge/i18n/" ~ page.lang ~ ".toml", required=false)  %}{%- endif %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false)  -%}
+{%- set uglyurls = (config.extra.uglyurls or false)  -%}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{%- set uglyurls = true -%}{%- endif -%}{%- endif -%}
         <span{%- if config.extra.meta_index?.size %} class="{{ config.extra.meta_index?.size }}"{% endif %}>
 
@@ -130,7 +130,7 @@
           {%- endif %}
 
         {#- ReadTime #}
-          {%- if config.extra.meta_index?.readtime %} {%- if config.extra.icon_read %}<i class="{{ config.extra.icon_read }}"></i> {% endif %} {{ page.reading_time }} {{ config.extra.meta_index?.readstring | default(value="min") }}
+          {%- if config.extra.meta_index?.readtime %} {%- if config.extra.icon_read %}<i class="{{ config.extra.icon_read }}"></i> {% endif %} {{ page.reading_time }} {{ (config.extra.meta_index?.readstring if config.extra.meta_index?.readstring else "min") }}
           {#- divider #}
           {%- if config.extra.meta_index?.date or config.extra.meta_index?.updated or config.extra.meta_index?.categories_tags %}
           {%- if config.extra.meta_index?.divider %}<span class="hpad">{{ config.extra.meta_index?.divider | safe }}</span>{%- else %} <span class="rpad"></span> {%- endif %}{%- endif %}{%- endif %}
@@ -162,10 +162,10 @@
 {%- endcomponent meta_index -%}
 
 {%- component footer(page, config) %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{%- set uglyurls = true %}{%- endif %}{%- endif %}
       {#- prev/next content page nextprev title pagination -#}
-      {%- if not config.extra.hide_page_nextprev_titles | default(value=false) %}
+      {%- if not (config.extra.hide_page_nextprev_titles or false) %}
       {%- if page.lower or page.higher %}
       <nav>
         <div>
@@ -184,7 +184,7 @@
 {%- endcomponent footer %}
 
 {% component pagination(paginator, config) %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false)  %}
+{%- set uglyurls = (config.extra.uglyurls or false)  %}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{% set uglyurls = true %}{% endif %}{% endif %}
   {%- if paginator.number_pagers > 1 %}
             {%- if paginator.number_pagers <= 5 %}  {# 5 or less pager is simple, just display all 5 #}
@@ -215,10 +215,10 @@
                 {%- endif %}
             {%- endif %}
       <nav class="vpad">
-        {%- set icon_first=config.extra.icon_first | default(value="svgs svgh angll")  %}
-        {%- set icon_prev=config.extra.icon_prev | default(value="svgs svgh angl")  %}
-        {%- set icon_next=config.extra.icon_next | default(value="svgs svgh angr")  %}
-        {%- set icon_last=config.extra.icon_last | default(value="svgs svgh angrr")  %}
+        {%- set icon_first=(config.extra.icon_first if config.extra.icon_first else "svgs svgh angll")  %}
+        {%- set icon_prev=(config.extra.icon_prev if config.extra.icon_prev else "svgs svgh angl")  %}
+        {%- set icon_next=(config.extra.icon_next if config.extra.icon_next else "svgs svgh angr")  %}
+        {%- set icon_last=(config.extra.icon_last if config.extra.icon_last else "svgs svgh angrr")  %}
         {%- if paginator.previous  %}
           <a class="on outp" href="{{ paginator.first | safe }}{%- if uglyurls %}index.html{%- endif %}" title="First Page">
           {%- if icon_first  %}<i class="{{ icon_first }}" alt="First Page"></i>
@@ -289,7 +289,7 @@
 {% endcomponent pagination %}
 
 {% component numpagination(paginator, config) %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false)  %}
+{%- set uglyurls = (config.extra.uglyurls or false)  %}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{% set uglyurls = true %}{% endif %}{% endif %}
   {%- if paginator.number_pagers > 1 %}
             {%- if paginator.number_pagers <= 5 %}  {# 5 or less pager is simple, just display all 5 #}
diff --git a/templates/components/seo.html b/templates/components/seo.html
index 87861ff..3a99096 100644
--- a/templates/components/seo.html
+++ b/templates/components/seo.html
@@ -44,7 +44,7 @@
 {%- endif %}
 
 {#- Extra SEO START #}
-{%- if config.extra?.seo | default(value=true) %}
+{%- if (config.extra?.seo if config.extra?.seo is defined else true) %}
 {%- if not is_404 %}
 
 {%- if config.extra?.google %}
diff --git a/templates/index.html b/templates/index.html
index 3c2c1b1..fc75d95 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -3,7 +3,7 @@ This Template Shows a paginated page of the Posts of a section with a short summ
 This Template can also be used directly for the index eg: example.com/ or as the rendering template for Sections, eg: example.com/blog/  example.com/software/
 #}
 {%- extends "base.html" %}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{% set uglyurls = true %}{% endif %}{% endif %}
 
 
@@ -65,7 +65,7 @@ This Template can also be used directly for the index eg: example.com/ or as the
     {%- if paginator %}{{<numpagination paginator={paginator} config={config} />}}{% endif %}
     {%- endif %}
     </div>
-  {%- if config.extra.recent | default(value=true) %}
+  {%- if (config.extra.recent if config.extra.recent is defined else true) %}
     {#- The following line is checking if the template is being used for the root or a section #}
     {%- if current_path is matching(pat="^(/[[:alpha:]][[:alpha:]])?(/page/[[:digit:]]+)?/$") %}
       {%- set sec = "" %}
@@ -87,7 +87,7 @@ This Template can also be used directly for the index eg: example.com/ or as the
     <div class="sblock">
       <div class="blockdiv sticky">
         <span class="b s150">{{<translate key="Recent"  default="Recent"  i18n={i18n} />}}</span>
-        {%- set recent_items=config.extra.recent_items | default(value=9) -%}
+        {%- set recent_items=(config.extra.recent_items if config.extra.recent_items is defined else 9) -%}
         {%- for page in section_item.pages[:recent_items] -%}
           {{<page_listing page={page}  config={config} />}}
         {%- endfor %}
diff --git a/templates/page.html b/templates/page.html
index 6615602..d8580fa 100644
--- a/templates/page.html
+++ b/templates/page.html
@@ -52,7 +52,7 @@
     {%- endblock page_header %}
 
     {#- In Page Series Navigation #}
-    {%- if config.extra.series | default(value=true) %}
+    {%- if (config.extra.series if config.extra.series is defined else true) %}
     {%- if page.extra.series %}
 
       {%- set tag = get_taxonomy_term(kind="tags", term=page.extra.series, lang=lang) %}
@@ -62,7 +62,7 @@
           {%- set parts_string %}{{<translate key="Series_parts" default="Series" i18n={i18n} />}}{%- endset %}
           {%- set parts_string = parts_string | replace(from="$NUMBER_OF_PARTS", to=page_num) %}
         {%- else %}
-          {%- set parts_string = config.extra.Series_parts | default(value="Series") | replace(from="$NUMBER_OF_PARTS", to=page_num) %}
+          {%- set parts_string = (config.extra.Series_parts if config.extra.Series_parts else "Series") | replace(from="$NUMBER_OF_PARTS", to=page_num) %}
         {%- endif %}
 
       <div class="block">
@@ -100,14 +100,14 @@
     {%- endblock comments_body %}
     </article>
     {%- block toc %}
-    {%- if config.extra.toc | default(value=true) %}
+    {%- if (config.extra.toc if config.extra.toc is defined else true) %}
     {%- if page.extra.toc %}
     {%- set toc = page.toc %}
     {%- endif %}
     {%- if toc or page.extra.series %}
     <div class="sblock">
       {%- if page.extra.series %}
-      {%- set num_extra_pages = config.extra.series_items | default(value=9) %}
+      {%- set num_extra_pages = (config.extra.series_items if config.extra.series_items is defined else 9) %}
       <div class="blockdiv">
         <a class="b s150" href="{{ tag.permalink | safe }}{%- if uglyurls %}index.html{%- endif %}">{{ parts_string }}</a><br>
         {%- if tag.page_count > num_extra_pages and num_extra_pages > 0 %}
@@ -207,7 +207,7 @@
 
 {%- if page.reading_time %}
 {%- if page.reading_time > 2 %}
-{%- set icon_top=config.extra.icon_top | default(value="svgs svgh angu") -%}
+{%- set icon_top=(config.extra.icon_top if config.extra.icon_top else "svgs svgh angu") -%}
 <span class="topout">
 <span class="topleft"> </span><a href="#" class="top" title="Back to Top">{%- if icon_top %}<i class="{{ icon_top }}"></i>{%- else %}&cuwed;{%- endif %}</a>
 </span>
diff --git a/templates/partials/head.html b/templates/partials/head.html
index e020404..0341d29 100644
--- a/templates/partials/head.html
+++ b/templates/partials/head.html
@@ -1,9 +1,9 @@
 
 {#- Theme Switcher Button to toggle between dark/light #}
-  {%- set integrity = config.extra.integrity | default(value=true) -%}
+  {%- set integrity = (config.extra.integrity if config.extra.integrity is defined else true) -%}
   {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{% set integrity = false %}{% endif %}{% endif %}
 
-  {%- if config.extra.js_switcher | default(value=true) %}
+  {%- if (config.extra.js_switcher if config.extra.js_switcher is defined else true) %}
   {%- set js_theme="js/theme.min.js" %}
   {%- if config.extra.js_switcher_default %}
     {%- if config.extra.js_switcher_default == "light" %}{% set js_theme="js/theme_light.min.js" %}{% endif %}
@@ -16,7 +16,7 @@
 
 
 {#- Style Sheets #}
-  {%- set stylesheets=config.extra.stylesheets | default(value=[ "abridge.css" ]) -%}
+  {%- set stylesheets=(config.extra.stylesheets if config.extra.stylesheets is defined else [ "abridge.css" ]) -%}
   {%- if stylesheets %}{%- for i in stylesheets %}
   <link rel="stylesheet" href="{{     get_url(path=i                               , trailing_slash=false, cachebust=true) | safe }}" />
   {%- endfor %}{%- endif %}
@@ -94,7 +94,7 @@
 
 
 {#- Style Sheets Preload #}
-  {%- set integrity = config.extra.integrity | default(value=true) -%}
+  {%- set integrity = (config.extra.integrity if config.extra.integrity is defined else true) -%}
   {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{% set integrity = false %}{% endif %}{% endif %}
 
 {%- if config.extra.fonts %}{%- for i in config.extra.fonts %}
@@ -111,7 +111,7 @@
 
 {%- if config.extra.math or page?.extra?.math %}
 
-  {%- set katex_css=config.extra.katex_css | default(value="katex.min.css") -%}
+  {%- set katex_css=(config.extra.katex_css if config.extra.katex_css else "katex.min.css") -%}
   {%- if katex_css %}{%- if katex_css is matching(pat="^http[s]?://") %}
   <link rel="preload" as="style" class="preStyle" href="{{ katex_css | safe }}"{%- if integrity and config.extra.katex_css_integrity %} integrity="{{ config.extra.katex_css_integrity | safe }}"{%- endif %} crossorigin="anonymous" />
   {%- else %}
diff --git a/templates/partials/head_js.html b/templates/partials/head_js.html
index af82de8..ae67802 100644
--- a/templates/partials/head_js.html
+++ b/templates/partials/head_js.html
@@ -1,7 +1,7 @@
 {#- JAVASCRIPT -#}
-  {%- set integrity = config.extra.integrity | default(value=true) -%}
+  {%- set integrity = (config.extra.integrity if config.extra.integrity is defined else true) -%}
   {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{%- set integrity = false -%}{%- endif -%}{%- endif -%}
-  {%- set search_library=config.extra.search_library | default(value="elasticlunr") -%}
+  {%- set search_library=(config.extra.search_library if config.extra.search_library else "elasticlunr") -%}
 
   {%- set preStyle = false -%}
 
@@ -16,7 +16,7 @@
   {%- endif -%}
 
   {%- if config.extra.math or page?.extra?.math -%}
-    {%- set katex_css=config.extra.katex_css | default(value="katex.min.css") -%}
+    {%- set katex_css=(config.extra.katex_css if config.extra.katex_css else "katex.min.css") -%}
     {%- if katex_css -%}
       {%- set preStyle = true -%}
     {%- endif -%}
@@ -26,14 +26,14 @@
 {%- if config.extra.js_bundle -%}
 
   {%- if config.build_search_index -%}
-  {%- if notserve and config.extra.pwa | default(value=false) %}
+  {%- if notserve and (config.extra.pwa or false) %}
   <script defer src="{{               get_url(path='js/abridge.min.js'             , trailing_slash=false, cachebust=true) | safe }}"{%- if integrity %} integrity="sha384-{{ get_hash(path='js/abridge.min.js', sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- else %}
   <script defer src="{{               get_url(path='js/abridge_nopwa.min.js'             , trailing_slash=false, cachebust=true) | safe }}"{%- if integrity %} integrity="sha384-{{ get_hash(path='js/abridge_nopwa.min.js', sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- endif -%}
 
   {%- else %}
-  {%- if notserve and config.extra.pwa | default(value=false) %}
+  {%- if notserve and (config.extra.pwa or false) %}
   <script defer src="{{               get_url(path='js/abridge_nosearch.min.js'    , trailing_slash=false, cachebust=true) | safe }}"{%- if integrity %} integrity="sha384-{{ get_hash(path='js/abridge_nosearch.min.js', sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- else %}
   <script defer src="{{               get_url(path='js/abridge_nosearch_nopwa.min.js'    , trailing_slash=false, cachebust=true) | safe }}"{%- if integrity %} integrity="sha384-{{ get_hash(path='js/abridge_nosearch_nopwa.min.js', sha_type=384, base64=true) | safe }}"{%- endif %}></script>
@@ -52,24 +52,24 @@
 {%- else %}{#- Not js_bundle #}
 
   {%- if preStyle == true %}
-  {%- if config.extra.js_prestyle | default(value=true) %}
+  {%- if (config.extra.js_prestyle if config.extra.js_prestyle is defined else true) %}
   <script defer src="{{               get_url(path='js/prestyle.js'                , trailing_slash=false, cachebust=true) | safe }}"{%- if integrity %} integrity="sha384-{{ get_hash(path='js/prestyle.js', sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- endif %}
   {%- endif %}
 
-  {%- if config.extra.js_switcher | default(value=true) %}
+  {%- if (config.extra.js_switcher if config.extra.js_switcher is defined else true) %}
   <script defer src="{{               get_url(path='js/theme_button.js'            , trailing_slash=false, cachebust=true) | safe }}"{%- if integrity %} integrity="sha384-{{ get_hash(path='js/theme_button.js', sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- endif %}
 
-  {%- if config.extra.js_email_encode | default(value=true) %}
+  {%- if (config.extra.js_email_encode if config.extra.js_email_encode is defined else true) %}
   <script defer src="{{               get_url(path='js/email.js'                   , trailing_slash=false, cachebust=true) | safe }}"{%- if integrity %} integrity="sha384-{{ get_hash(path='js/email.js', sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- endif %}
 
-  {%- if config.extra.js_copycode | default(value=true) %}
+  {%- if (config.extra.js_copycode if config.extra.js_copycode is defined else true) %}
   <script defer src="{{               get_url(path='js/codecopy.js'                , trailing_slash=false, cachebust=true) | safe }}"{%- if integrity %} integrity="sha384-{{ get_hash(path='js/codecopy.js', sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- endif %}
 
-  {%- if notserve and config.extra.pwa | default(value=false) %}
+  {%- if notserve and (config.extra.pwa or false) %}
   <script defer src="{{               get_url(path='js/sw_load.js'             , trailing_slash=false, cachebust=true) | safe }}"{%- if integrity %} integrity="sha384-{{ get_hash(path='js/sw_load.js', sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- endif %}
 
@@ -84,7 +84,7 @@
     {%- endif %}
   {%- endif %}
 
-  {%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+  {%- set uglyurls = (config.extra.uglyurls or false) -%}
   {%- if config.extra.search_library %}{%- if config.extra.search_library == "offline" %}{% set uglyurls = true %}{% endif %}{% endif %}
   {%- if search_index_format == "elasticlunr_javascript" %}{#- Javascript index format #}
   <script defer src="{{               get_url(path='js/elasticlunr.min.js'         , trailing_slash=false, cachebust=true) | safe }}"{%- if integrity %} integrity="sha384-{{ get_hash(path='js/elasticlunr.min.js'         , sha_type=384, base64=true) | safe }}"{%- endif %}></script>
@@ -119,19 +119,19 @@
 {#- https://github.com/KaTeX/KaTeX/tree/main/contrib/mathtex-script-type/ #}
 {%- if config.extra.math or page?.extra?.math %}
 
-{%- set katex_bundle=config.extra.katex_bundle | default(value="js/katexbundle.min.js") -%}
+{%- set katex_bundle=(config.extra.katex_bundle if config.extra.katex_bundle else "js/katexbundle.min.js") -%}
 {%- if katex_bundle %}
   <script defer src="{{               get_url(path=katex_bundle                    , trailing_slash=false, cachebust=true) }}"{%- if integrity %} integrity="sha384-{{ get_hash(path=katex_bundle, sha_type=384, base64=true) | safe }}"{%- endif %}></script>
 {%- else %}
 
-  {%- set katex_js=config.extra.katex_js | default(value="js/katex.min.js") -%}
+  {%- set katex_js=(config.extra.katex_js if config.extra.katex_js else "js/katex.min.js") -%}
   {%- if katex_js %}{%- if katex_js is matching(pat="^http[s]?://") %}
   <script defer src="{{               katex_js | safe }}"{%- if integrity and config.extra.katex_js_integrity %} integrity="{{ config.extra.katex_js_integrity | safe }}"{%- endif %} crossorigin="anonymous"></script>
   {%- else %}
   <script defer src="{{               get_url(path=katex_js                        , trailing_slash=false, cachebust=true) }}"{%- if integrity %} integrity="sha384-{{ get_hash(path=katex_js, sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- endif %}{%- endif %}
 
-  {%- set mathtex_js=config.extra.mathtex_js | default(value="js/mathtex-script-type.min.js") -%}
+  {%- set mathtex_js=(config.extra.mathtex_js if config.extra.mathtex_js else "js/mathtex-script-type.min.js") -%}
   {%- if mathtex_js %}{%- if mathtex_js is matching(pat="^http[s]?://") %}
   <script defer src="{{ mathtex_js | safe }}"{%- if integrity and config.extra.mathtex_js_integrity %} integrity="{{ config.extra.mathtex_js_integrity | safe }}"{%- endif %} crossorigin="anonymous"></script>
   {%- else %}
@@ -139,7 +139,7 @@
   {%- endif %}{%- endif %}
 
  {%- if config.extra.math_auto_render or page?.extra?.math_auto_render %}
-  {%- set katex_autorender_js=config.extra.katex_autorender_js | default(value="js/katex-auto-render.min.js") -%}
+  {%- set katex_autorender_js=(config.extra.katex_autorender_js if config.extra.katex_autorender_js else "js/katex-auto-render.min.js") -%}
   {%- if katex_autorender_js %}
   {%- if katex_autorender_js is matching(pat="^http[s]?://") %}
   <script defer src="{{               katex_autorender_js | safe }}"{%- if integrity and config.extra.katex_autorender_js_integrity %} integrity="{{ config.extra.katex_autorender_js_integrity | safe }}"{%- endif %} crossorigin="anonymous"></script>
@@ -147,7 +147,7 @@
   <script defer src="{{               get_url(path=katex_autorender_js             , trailing_slash=false, cachebust=true) }}"{%- if integrity %} integrity="sha384-{{ get_hash(path=katex_autorender_js, sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- endif %}
   {%- endif %}
-  {%- set katex_options=config.extra.katex_options | default(value="js/katexoptions.js") -%}
+  {%- set katex_options=(config.extra.katex_options if config.extra.katex_options else "js/katexoptions.js") -%}
   {%- if katex_options %}
   <script defer src="{{               get_url(path=katex_options                   , trailing_slash=false, cachebust=true) }}"{%- if integrity %} integrity="sha384-{{ get_hash(path=katex_options, sha_type=384, base64=true) | safe }}"{%- endif %}></script>
   {%- endif %}
diff --git a/templates/partials/social.html b/templates/partials/social.html
index a44142a..d830f30 100644
--- a/templates/partials/social.html
+++ b/templates/partials/social.html
@@ -12,7 +12,7 @@
           {%- endif -%}
 
           {%- if config.extra.mail -%}
-          {%- if config.extra.mail_encode | default(value=true) -%}
+          {%- if (config.extra.mail_encode if config.extra.mail_encode is defined else true) -%}
           {%- set base64_email = config.extra.mail -%}
           <a class="js m-protected" href="#{{ base64_email | base64_encode }}" target="_blank" title="Mail"><i type="Button" class="svg mail" title="Mail"></i></a>
           {%- else -%}
diff --git a/templates/tags/list.html b/templates/tags/list.html
index 0f3488a..bbe195d 100644
--- a/templates/tags/list.html
+++ b/templates/tags/list.html
@@ -1,5 +1,5 @@
 {%- extends "base.html" -%}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library -%}{%- if config.extra.search_library == "offline" -%}{%- set uglyurls = true -%}{%- endif -%}{%- endif -%}
 {%- block seo -%}
   {{- super() -}}
diff --git a/templates/tags/single.html b/templates/tags/single.html
index b507ceb..02593a5 100644
--- a/templates/tags/single.html
+++ b/templates/tags/single.html
@@ -1,5 +1,5 @@
 {%- extends "base.html" -%}
-{%- set uglyurls = config.extra.uglyurls | default(value=false) -%}
+{%- set uglyurls = (config.extra.uglyurls or false) -%}
 {%- if config.extra.search_library -%}{%- if config.extra.search_library == "offline" -%}{%- set uglyurls = true -%}{%- endif -%}{%- endif -%}
 {%- block seo -%}
   {{- super() -}}