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" XDG Base Directory support
" This script sets up paths for XDG compliance.
" Maintainer: The Vim Project <https://github.com/vim/vim>
" Last Change: 2026 Feb 19
let s:config = empty($XDG_CONFIG_HOME) ? expand("~/.config") : expand("$XDG_CONFIG_HOME")
let s:data = empty($XDG_DATA_HOME) ? expand("~/.local/share") : expand("$XDG_DATA_HOME")
let s:state = empty($XDG_STATE_HOME) ? expand("~/.local/state") : expand("$XDG_STATE_HOME")
if isdirectory(s:config .. '/vim')
func s:mkvimdir(dir)
if !isdirectory(a:dir)
call mkdir(a:dir, 'p', 0700)
endif
return a:dir
endfunc
" Use Data for packages, prevent duplicates
if index(split(&packpath, ','), s:data .. '/vim') == -1
exe $"set packpath^={s:data}/vim"
exe $"set packpath+={s:data}/vim/after"
endif
" These options are not set by default because they change the behavior of
" where files are saved. Uncomment them if you want to fully move all
" transient/persistent files to XDG directories.
" Note: Undo/Views/Spell are placed in DATA_HOME as they are persistent,
" while Swap/Backups use STATE_HOME as transient session state.
" Persistent Data:
" let &undodir = s:mkvimdir(s:data .. '/vim/undo')
" let &viewdir = s:mkvimdir(s:data .. '/vim/view')
" let g:netrw_home = s:mkvimdir(s:data .. '/vim')
" call s:mkvimdir(s:data .. '/vim/spell')
" Transient State:
let &viminfofile = s:mkvimdir(s:state .. '/vim') .. '/viminfo'
" let &directory = s:mkvimdir(s:state .. '/vim/swap') .. '//'
" let &backupdir = s:mkvimdir(s:state .. '/vim/backup') .. '//'
delfunction s:mkvimdir
endif
unlet s:config s:data s:state
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