if &compatible || exists('g:loaded_lesspipe') | finish | endif

if exists('g:lesspipe_cmd')
  let s:lesspipe_cmd = g:lesspipe_cmd
elseif executable('lesspipe.sh')
  let s:lesspipe_cmd = 'LESSQUIET=1 lesspipe.sh'
elseif executable('lesspipe')
  let s:lesspipe_cmd = 'lesspipe'
elseif executable('run-mailcap')
  let s:lesspipe_cmd = 'run-mailcap --action=cat'
endif

" Require a usable lesspipe command.
if !exists('s:lesspipe_cmd') || !executable('file') | finish | endif

" Optional upper bound to avoid expensive conversions; override as needed.
if !exists('g:lesspipe_max_bytes')
  let g:lesspipe_max_bytes = 20 * 1024 * 1024  " 20 MiB
endif

function! s:Lesspipe() abort
  " Skip if already transformed or unsuitable buffer types.
  if exists('b:lesspipe_done') | return | endif
  if !empty(&l:buftype) || &l:binary | return | endif

  " Resolve absolute path; require a regular readable file.
  let abs = resolve(expand('%:p'))
  if getftype(abs) !=# 'file' | return | endif
  if !filereadable(abs) | return | endif
  " Skip URLs such as vim's netrw.
  if abs =~# '^\w\+://' | return | endif

  " Respect existing filetype detection.
  if (!empty(&l:filetype) || did_filetype()) && !exists('b:lesspipe_force') | return | endif

  " Size guard to avoid heavy processing.
  let sz = getfsize(abs)
  if sz >= 0 && sz > g:lesspipe_max_bytes | return | endif

  " Skip if 'file' says it's text/*.
  let mime = trim(system('file -b --mime-type ' .. shellescape(abs)))
  if v:shell_error == 0 && mime =~# '^text/' | return | endif

  " Apply lesspipe, then lock the buffer down for viewing.
  try
    " Use keepjumps/keepmarks to avoid disturbing user state.
    execute 'silent keepjumps keepmarks %!' s:lesspipe_cmd shellescape(abs)
    setlocal filetype=text buftype=nowrite bufhidden=hide noswapfile readonly nomodifiable
    let b:lesspipe_done = 1
  catch /.*/
    " Leave buffer unchanged on failure.
  endtry
endfunction

augroup lesspipe
  autocmd!
  autocmd BufReadPost *   call s:Lesspipe()
  " "  Vim sets a filetype for pdf files; uncomment to force lesspipe on them.
  " autocmd Filetype    pdf let b:lesspipe_force = 1 | doautocmd lesspipe BufReadPost
augroup END

echo g:zipPlugin_ext

*.aar,*.apk,*.celzip,*.crtx,*.docm,*.docx,*.dotm,*.dotx,*.ear,*.epub,*.gcsx,*.glox,*.gqsx,*.ja,*.jar,*.kmz,*.odb,*.odc,*.od
f,*.odg,*.odi,*.odm,*.odp,*.ods,*.odt,*.otc,*.otf,*.otg,*.oth,*.oti,*.otp,*.ots,*.ott,*.oxt,*.potm,*.potx,*.ppam,*.ppsm,*.p
psx,*.pptm,*.pptx,*.sldx,*.thmx,*.vdw,*.war,*.wsz,*.xap,*.xlam,*.xlam,*.xlsb,*.xlsm,*.xlsx,*.xltm,*.xltx,*.xpi,*.zip

" Remove extensions jar?|epub|doc[xm]|xls[xmb]|pp[st][xm] from g:zipPlugin_ext
" from Sep 13, 2016 and afterwards add back whenever converter unavailable
let g:zipPlugin_ext='*.apk,*.celzip,*.crtx,*.ear,*.gcsx,*.glox,*.gqsx,*.kmz,*.oxt,*.potm,*.potx,*.ppam,*.sldx,*.thmx,*.vdw,*.war,*.wsz,*.xap,*.xlam,*.xlam,*.xltm,*.xltx,*.xpi,*.zip'

  let g:loaded_gzip = v:true