The biggest speed gain comes from a snippet tool that can interact with a programming language. He uses Ultisnips, which can bw filtered through python. This i

The biggest speed gain comes from a snippet tool that can interact with a programming language. He uses Ultisnips, which can bw filtered through python. This is probably an equivalent in emacs. Interestingly, this is more or less unusable in neovim because of how slow neovim's python interop is.