Does kinda work

Perfect :

* Using :left and V , set ts=4 sts=4 sw=4

* Recording macros with q

* Main vim combos - it's definitely vim

Fails :

* Typing { or } on a MacBook Air under Firefox - don't know which of this settings cause the bug. Reproducibly, { does not work

* Replaying a macro containing { or any error

Kudos for the compilation (emscripten ?) and Brace for impact (the incoming bugs) :)