The lang attribute is no longer limited to 2 characters, but allows IETF language tags, see bug 578294. So the longdescription could be updated to lang="zh-Hant" for traditional Chinese.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=240623c574cde0a69b3e0a2dacc5e51fe1b3fbac commit 240623c574cde0a69b3e0a2dacc5e51fe1b3fbac Author: Marek Szuba <marecki@gentoo.org> AuthorDate: 2022-05-24 08:04:41 +0000 Commit: Marek Szuba <marecki@gentoo.org> CommitDate: 2022-05-24 08:55:29 +0000 app-dicts/sword-ChiSB: update Chinese longdescription lang tag Closes: https://bugs.gentoo.org/847223 Signed-off-by: Marek Szuba <marecki@gentoo.org> app-dicts/sword-ChiSB/metadata.xml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)