yr: Simplify set yrlang.
yr: Simplify set yrlang.

Former-commit-id: d81422b19b30b14eb3dfe80db59bb4bc11afa930 [formerly 2b6927ca11dfa159d1c39dbc4ed07ace439eefa8]
Former-commit-id: a89f4a480def85a5e0ba64677197ab35d7d4e2f4
torhve/ivar2,haste/ivar2,torhve/ivar2,torhve/ivar2