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"
" Prevent various Vim features from keeping the contents of pass(1) password
" files (or any other purely temporary files) in plaintext on the system.
"
" Either append this to the end of your .vimrc, or install it as a plugin with
" a plugin manager like Tim Pope's Pathogen.
"
" Author: Tom Ryder <tom@sanctum.geek.nz>
"

" Don't backup files in temp directories or shm
if exists('&backupskip')
    set backupskip+=/tmp/*,$TMPDIR/*,$TMP/*,$TEMP/*,*/shm/*
endif

" Don't keep swap files in temp directories or shm
if has('autocmd')
    augroup swapskip
        autocmd!
        silent! autocmd BufNewFile,BufReadPre
            \ /tmp/*,$TMPDIR/*,$TMP/*,$TEMP/*,*/shm/*
            \ setlocal noswapfile
    augroup END
endif

" Don't keep undo files in temp directories or shm
if has('persistent_undo') && has('autocmd')
    augroup undoskip
        autocmd!
        silent! autocmd BufWritePre
            \ /tmp/*,$TMPDIR/*,$TMP/*,$TEMP/*,*/shm/*
            \ setlocal noundofile
    augroup END
endif

" Don't keep viminfo for files in temp directories or shm
if has('viminfo')
    if has('autocmd')
        augroup viminfoskip
            autocmd!
            silent! autocmd BufNewFile,BufReadPre
                \ /tmp/*,$TMPDIR/*,$TMP/*,$TEMP/*,*/shm/*
                \ setlocal viminfo=
        augroup END
    endif
endif