Add a test verifying that duplicate variants in the tlang component of a language tag make it structurally invalid#2858

Merged

rwaldron merged 1 commit intotc39:mainfrom jswalden:test-duplicate-variants-in-tlang-rejected

Oct 9, 2020

Commits on Oct 9, 2020

Add tests verifying that duplicate variants, in a tag or in the tlang component of a tag, make it structurally invalid.
jswalden
committed