+" rtp + xdg {{{1
+" remove entries first
+set runtimepath -=$HOME/.vim
+set runtimepath -=$HOME/.vim/after
+set runtimepath -=$XDG_CONFIG_HOME/vim
+set runtimepath -=$XDG_CONFIG_HOME/vim/after
+" then add prepend and append them
+set runtimepath ^=$XDG_CONFIG_HOME/vim
+set runtimepath +=$XDG_CONFIG_HOME/vim/after
+