Describe .Language.LanguageCode fallback value

Co-authored-by: chalin <chalin@users.noreply.github.com>
gohugoio · May 13, 2024 · efad994 · efad994
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diff --git a/content/en/getting-started/configuration.md b/content/en/getting-started/configuration.md
@@ -328,8 +328,11 @@ See [image processing configuration](/content-management/image-processing/#imagi
 
 (`string`) A language tag as defined by [RFC 5646](https://datatracker.ietf.org/doc/html/rfc5646). This value is used to populate:
 
-- The `<language>` element in the internal [RSS template](https://github.com/gohugoio/hugo/blob/master/tpl/tplimpl/embedded/templates/_default/rss.xml)
-- The `lang` attribute of the `<html>` element in the internal [alias template](https://github.com/gohugoio/hugo/blob/master/tpl/tplimpl/embedded/templates/alias.html)
+- The `<language>` element in the embedded [RSS template]({{% eturl rss %}})
+- The `lang` attribute of the `<html>` element in the embedded [alias template]({{% eturl alias %}})
+- The `og:locale` `meta` element in the embedded [Open Graph template]({{% eturl opengraph %}})
+
+When present in the root of the configuration, this value is ignored if one or more language keys exists. Please specify this value independently for each language key.
 
 ###### languages
 

diff --git a/content/en/methods/page/Language.md b/content/en/methods/page/Language.md
@@ -34,7 +34,7 @@ Lang
 ```
 
 LanguageCode
-: (`string`) The language code from the site configuration.
+: (`string`) The language code from the site configuration. Falls back to `Lang` if not defined.
 
 ```go-html-template
 {{ .Language.LanguageCode }} → de-DE

diff --git a/content/en/methods/site/Language.md b/content/en/methods/site/Language.md
@@ -35,7 +35,7 @@ Lang
 ```
 
 LanguageCode
-: (`string`) The language code from the site configuration.
+: (`string`) The language code from the site configuration. Falls back to `Lang` if not defined.
 
 ```go-html-template
 {{ .Site.Language.LanguageCode }} → de-DE