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Redirect missing translations to the English page #4008

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Merged
hsbt merged 3 commits into from
Sep 15, 2026
+14 −9
Merged

Redirect missing translations to the English page #4008

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312abea
Generate the 404 language list from site data
hsbt Sep 15, 2026
50c142e
Stop the 404 redirect loop for languages without a 404 page
hsbt Sep 15, 2026
64ba76a
Redirect missing translations to the English page
hsbt Sep 15, 2026
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23 changes: 14 additions & 9 deletions 404.md
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Original file line number Diff line number Diff line change
Expand Up @@ -8,15 +8,20 @@ sitemap: false

<script>
(function() {
// Detect language from URL path
var path = window.location.pathname;
var match = path.match(/^\/(bg|de|en|es|fr|id|it|ja|ko|pl|pt|ru|tr|ua|vi|zh_cn|zh_tw)\//);

if (match && match[1] !== 'en') {
var lang = match[1];
// Redirect to language-specific 404 page
window.location.href = '/' + lang + '/404.html';
}
const languages = {{ site.data.languages | map: "code" | jsonify }};
const path = window.location.pathname;
const match = path.match(/^\/([^\/]+)(\/.*)$/);
if (!match || match[1] === 'en' || !languages.includes(match[1])) return;
const notFound = '/' + match[1] + '/404.html';
// A language without its own 404 page is served this page again there
if (path === notFound) return;
// Fall back to the English page when a translation does not exist
const english = '/en' + match[2];
fetch(english, { method: 'HEAD' })
.then(function(res) { return res.ok; }, function() { return false; })
.then(function(found) {
window.location.replace(found ? english + window.location.search + window.location.hash : notFound);
});
})();
</script>

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