split ouvre la nouvelle et droite et en base

config/nvim/init.vim

@@ -10,6 +10,8 @@ set smartcase
 set nobackup
 set incsearch
 set clipboard+=unnamedplus
+set splitbelow              " A new window is put below the current one
+set splitright              " A new window is put right of the current one
 " coc plugin related
 set hidden
 set nobackup