Reverting of edits to "ɗi"?

Thx. I often use the relevant ISO 639 code(s) when adding a language entry to an existing page as a shorthand, though sometimes prefixed with "+". Can avoid this on en.wiktionary. Probably not common enough a practice to configure bots to crosscheck for this on edit line with edits made?

It wasn't a bot, it was me myself. I saw "ff" and assumed it was vandalism because it's similar to the random repeated characters that vandals might insert in entries and use as edit summaries. Once I noticed the mistake I reverted myself.