This is the Ц (ce) language. It's C, but on russian pre-reform under Peter I. Created by adisteyf (adk.).
Warning
Another part of README.md on russian pre-reform.
git clone https://github.com/shawarmateam/ru-prereform-c.cd ru-prereform-c.make -B.
Чтобы ГЦЦ работалъ правильно запꙋстите ./сохръ-библия.