/usr/share/nvim/runtime/plugin/health.vim is in neovim-runtime 0.2.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | function! s:complete(lead, _line, _pos) abort
return sort(filter(map(globpath(&runtimepath, 'autoload/health/*', 1, 1),
\ 'fnamemodify(v:val, ":t:r")'),
\ 'empty(a:lead) || v:val[:strlen(a:lead)-1] ==# a:lead'))
endfunction
command! -nargs=* -complete=customlist,s:complete CheckHealth
\ call health#check([<f-args>])
|