I've used mg and find it generally useful. It's my default editor pretty much everywhere.

However, the code is a mess, with deliberately cryptic identifiers (e.g., `w_doto` for `cursorOffset`), redundant functions (e.g., `vtputc()` is a strict subset of the behavior of `vtpute()`) and a bunch of other weird choices (e.g., deeply-baked assumptions that one byte == one char == one column, even thought Big5 and ShiftJIS were already a thing when it was written).

I tried adding UTF-8 support to mg a couple years ago and basically gave up.

I'll probably be an atto convert.