Background

• Vim store files inside an in-memory “buffer” which is presented to the user
• If another program modifies the file that Vim is working with (e.g. another Vim session or IDE), Vim will not reload the contents of the file into the buffer by default

Steps

• To enable the reloading behaviour you need to set the autoread option in your .vimrc to true
• Example Neovim configuration

-- options.lua
local options = {
  -- Snipped for brevity
  autoread = true
}

• Or just plain Vimscript:

set autoread