The last 10% is usually the actual 90%.
Claims like C++ translation is definitely one of those 90% things that may look easy to some people until you actually try to do it.
Claims like C++ translation is definitely one of those 90% things that may look easy to some people until you actually try to do it.
I'd be ok with V though, even if it didn't do C++ translation (or even C translation at all).
Just a fast building, Algol-style syntax language, with the basic language features mentioned.
There are literally dozens of good enough small languages, e.g.: Nim, Zig, Crystal, Pony, etc etc, and at least the first two were written by a single person for the most part.
There are many other single-author single-serving languages (used to make games for example GOOL in Crash Bandicoot etc).
Not saying this can't be vaporware, but it's not beyond comprehension.
Heck, not long ago, a guy (with some psychological issues too) made his own OS, high level language compiler (HolyC), drivers, UI, and a flight simulator in assembler and HolyC, all working too (TempleOS).