vim diff support for jadx jobf files

vimrc

autocmd BufNewFile,BufRead *.jobf set diffexpr=DiffJobf()
function DiffJobf()
  let expr = "s_[Cfmp]o?[0-9]{4}[a-zA-Z0-9]_FNORD_g"
  let opt = ""
  if &diffopt =~ "icase"
    let opt = opt . "-i "
  endif
  if &diffopt =~ "iwhite"
    let opt = opt . "-b "
  endif
  silent execute "!diff -a --binary " . opt .
    \ "<(sed -E '" . expr . "' " . v:fname_in  . ") " .
    \ "<(sed -E '" . expr . "' " . v:fname_new . ") > " . v:fname_out
endfunction