Traditionally (classic vim), horribly well. Fully extensible, but Vimscript is quirky to say the least. Recently (neovim), delightfully. It just uses Lua and e

Traditionally (classic vim), horribly well. Fully extensible, but Vimscript is quirky to say the least. Recently (neovim), delightfully. It just uses Lua and exposes APIs for absolutely everything.