yoficator

Etymology
Borrowed from.

Noun

 * 1) A computer program or person tasked with restoring the Cyrillic letter Yo ⟨Ё⟩ in Russian texts where it is replaced by the letter Ye ⟨Е⟩.
 * 2) A person who supports the usage of the letter Yo ⟨Ё⟩ in Russian.