Automated hreflang generation

_includes/head.html

@@ -6,5 +6,5 @@
   <link rel="stylesheet" href="{{ "/assets/main.css" | relative_url }}">
   {%- feed_meta -%}
   <meta property="og:image" content="{{ "/assets/social-media-preview.png" | absolute_url }}">
-  {% include hreflangs.html %}
+  {%- include hreflangs.html -%}
 </head>

_includes/hreflangs.html

@@ -1,33 +1,28 @@
-<link rel="alternate" hreflang="sq" href="https://rms-support-letter.github.io/index-al.html" />
+{% for translation in site.translations %}
-<link rel="alternate" hreflang="ar" href="https://rms-support-letter.github.io/index-ar.html" />
+  {%- assign locale_tuple = translation.locale | split: "_" -%}
-<link rel="alternate" hreflang="de" href="https://rms-support-letter.github.io/index-de.html" />
+  {%- assign lang = locale_tuple | first -%}
-<link rel="alternate" hreflang="es" href="https://rms-support-letter.github.io/index-es.html" />
+  {%- assign region = locale_tuple | last -%}
-<link rel="alternate" hreflang="fa" href="https://rms-support-letter.github.io/index-fa.html" />
+  {%- assign filename_prefix = 'index-' -%}
-<link rel="alternate" hreflang="fi" href="https://rms-support-letter.github.io/index-fi.html" />
+  {%- assign filename_suffix = '.html' -%}
-<link rel="alternate" hreflang="fr" href="https://rms-support-letter.github.io/index-fr.html" />
+  {%- if lang == 'zh' -%}
-<link rel="alternate" hreflang="gl" href="https://rms-support-letter.github.io/index-gal.html" />
+    {%- if region == 'TW' -%}
-<link rel="alternate" hreflang="el" href="https://rms-support-letter.github.io/index-gr.html" />
+      {%- assign hreflang = 'zh-Hant' -%}
-<link rel="alternate" hreflang="hr" href="https://rms-support-letter.github.io/index-hr.html" />
+      {%- assign downcase_hreflang = 'zh-Hant' | downcase -%}
-<link rel="alternate" hreflang="hy" href="https://rms-support-letter.github.io/index-hy.html" />
+      <link rel="alternate" hreflang="{{hreflang}}" href="https://rms-support-letter.github.io/{{filename_prefix}}{{downcase_hreflang}}{{filename_suffix}}" />
-<link rel="alternate" hreflang="id" href="https://rms-support-letter.github.io/index-id.html" />
+    {%- else -%}
-<link rel="alternate" hreflang="it" href="https://rms-support-letter.github.io/index-it.html" />
+      {%- assign hreflang = 'zh-Hans' -%}
-<link rel="alternate" hreflang="ja" href="https://rms-support-letter.github.io/index-jp.html" />
+      {%- assign downcase_hreflang = 'zh-Hans' | downcase -%}
-<link rel="alternate" hreflang="ko" href="https://rms-support-letter.github.io/index-ko.html" />
+      <link rel="alternate" hreflang="{{hreflang}}" href="https://rms-support-letter.github.io/{{filename_prefix}}{{downcase_hreflang}}{{filename_suffix}}" />
-<link rel="alternate" hreflang="lv" href="https://rms-support-letter.github.io/index-lv.html" />
+    {%- endif -%}
-<link rel="alternate" hreflang="nl" href="https://rms-support-letter.github.io/index-nl.html" />
+  {%- elsif lang == 'pt' -%}
-<link rel="alternate" hreflang="pl" href="https://rms-support-letter.github.io/index-pl.html" />
+    {%- assign downcase_region = region | downcase -%}
-<link rel="alternate" hreflang="pt-BR" href="https://rms-support-letter.github.io/index-pt-br.html" />
+    <link rel="alternate" hreflang="{{lang}}-{{region}}" href="https://rms-support-letter.github.io/{{filename_prefix}}{{lang}}-{{downcase_region}}{{filename_suffix}}" />
-<link rel="alternate" hreflang="pt-PT" href="https://rms-support-letter.github.io/index-pt-pt.html" />
+  {%- elsif lang == 'gal' -%}
-<link rel="alternate" hreflang="ro" href="https://rms-support-letter.github.io/index-ro.html" />
+    {%- assign lang = gl -%}
-<link rel="alternate" hreflang="sr" href="https://rms-support-letter.github.io/index-rs.html" />
+    <link rel="alternate" hreflang="{{lang}}" href="https://rms-support-letter.github.io/{{filename_prefix}}{{lang}}{{filename_suffix}}" />
-<link rel="alternate" hreflang="ru" href="https://rms-support-letter.github.io/index-ru.html" />
+  {%- else -%}
-<link rel="alternate" hreflang="sv" href="https://rms-support-letter.github.io/index-se.html" />
+    <link rel="alternate" hreflang="{{lang}}" href="https://rms-support-letter.github.io/{{filename_prefix}}{{lang}}{{filename_suffix}}" />
-<link rel="alternate" hreflang="ta" href="https://rms-support-letter.github.io/index-ta.html" />
+  {%- endif -%}
-<link rel="alternate" hreflang="tl" href="https://rms-support-letter.github.io/index-tl.html" />
+{%- endfor -%}
-<link rel="alternate" hreflang="tr" href="https://rms-support-letter.github.io/index-tr.html" />
+<link rel="alternate" hreflang="en" href="https://rms-support-letter.github.io/" /><link rel="alternate" hreflang="x-defaul
-<link rel="alternate" hreflang="uk" href="https://rms-support-letter.github.io/index-ua.html" />
+t" href="https://rms-support-letter.github.io/" />
-<link rel="alternate" hreflang="vi" href="https://rms-support-letter.github.io/index-vi.html" />
-<link rel="alternate" hreflang="zh-Hans" href="https://rms-support-letter.github.io/index-zh-cn.html" />
-<link rel="alternate" hreflang="zh-Hant" href="https://rms-support-letter.github.io/index-zh-tw.html" />
-<link rel="alternate" hreflang="en" href="https://rms-support-letter.github.io/" />
-<link rel="alternate" hreflang="x-default" href="https://rms-support-letter.github.io/" />

_translations/index_zh_hant.md

@@ -2,7 +2,7 @@
 layout: signed
 title: 一封支持 Richard Stallman 的公開信
 description: An open letter in support of Richard Matthew Stallman being reinstated by the Free Software Foundation
-image: /assets/social-media-preview.png
+aimage: /assets/social-media-preview.png
 locale: zh_TW
 twitter:
   card: summary_large_image