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On Gentoo Wiki, localized wiki pages are subpages named by the language ISO639 code.
E.g: want the Spanish article of Systemd? It's as simple as appending 2 characters:
https://wiki.gentoo.org/wiki/Systemd/ --> https://wiki.gentoo.org/wiki/Systemd/es
On Arch, links are ugly and long. Like this:
https://wiki.archlinux.org/title/Systemd_(Espa%C3%B1ol)
https://wiki.archlinux.org/title/List_of_applications_(Espa%C3%B1ol)/Documents_(Espa%C3%B1ol)
Advantages:
URLs are "clean". No percent-encoding needed.
All languages are standardized according to ISO639
Querying subpages is simpler with Wiki tools like "All pages with prefix": https://wiki.archlinux.org/title/Special:PrefixIndex
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This is standardized on the Arch wiki: https://wiki.archlinux.org/title/Help:I18n
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Yes, and my suggestion is to use ISO639 codes instead of appending (LANGUAGE_NAME).
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Several alternatives were considered in the past and the discussion got nowhere, so we stick to the status quo.
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