" use XDG
if empty($MYVIMRC) | let $MYVIMRC = expand('%:p') | endif

if empty($XDG_CACHE_HOME)  | let $XDG_CACHE_HOME  = $HOME.'/.cache'       | endif
if empty($XDG_CONFIG_HOME) | let $XDG_CONFIG_HOME = $HOME.'/.config'      | endif
if empty($XDG_DATA_HOME)   | let $XDG_DATA_HOME   = $HOME.'/.local/share' | endif
if empty($XDG_STATE_HOME)  | let $XDG_STATE_HOME  = $HOME.'/.local/state' | endif

set runtimepath^=$XDG_CONFIG_HOME/vim
set runtimepath+=$XDG_CONFIG_HOME/vim/after
set runtimepath+=$XDG_DATA_HOME/vim

set packpath^=$XDG_DATA_HOME/vim

if !isdirectory($XDG_DATA_HOME.'/vim/spell')
  call mkdir($XDG_DATA_HOME.'/vim/spell', 'p', 0700)
endif

set backupdir=$XDG_CACHE_HOME/vim/backup/
set directory=$XDG_CACHE_HOME/vim/swap/
set undodir=$XDG_CACHE_HOME/vim/undo/
set viewdir=$XDG_CACHE_HOME/vim/view/

if !isdirectory(&backupdir)
  call mkdir(&backupdir, 'p', 0700)
endif

if !isdirectory(&directory)
  call mkdir(&directory, 'p', 0700)
endif

if !isdirectory(&undodir)
  call mkdir(&undodir,   'p', 0700)
endif

if !isdirectory(&viewdir)
  call mkdir(&viewdir,   'p', 0700)
endif

if !has('nvim')
  set viminfofile=$XDG_CACHE_HOME/vim/viminfo
endif