fix vim undo

.vimrc

@@ -25,6 +25,8 @@ set backspace=indent,eol,start
 set clipboard=unnamed
 set mouse=a
 set ttimeoutlen=10
+set undofile
+set undodir=~/.vim/undo
 
 let g:autosave = 1
 nnoremap Q :q!<CR>

install.zsh

@@ -42,6 +42,9 @@ for d in "${dirs[@]}"; do
   echo "link: $dst -> $src"
 done
 
+# create vim undo dir
+mkdir -p "$HOME/.vim/undo"
+
 # install vim-plug
 if [ ! -f "$HOME/.vim/autoload/plug.vim" ]; then
   curl -fLo "$HOME/.vim/autoload/plug.vim" --create-dirs \