patch 8.0.1391: encoding empty string to JSON sometimes gives "null" commit https://github.com/vim/vim/commit/b29d328eb403a243431f4d0d5b360b4ac46bbc3e Author: Bram Moolenaar <Bram@vim.org> Date: Fri Dec 15 21:25:01 2017 +0100 patch 8.0.1391: encoding empty string to JSON sometimes gives "null" Problem: Encoding empty string to JSON sometimes gives "null". Solution: Handle NULL string as empty string. (closes https://github.com/vim/vim/issues/2446)

" Assume 'encoding' is set to "latin1" while actually cp1253 or iso-8859-7 is
" being used
if has("win16") || has("win32") || has("win32unix")
  source <sfile>:p:h/greek_cp1253.vim
else
  source <sfile>:p:h/greek_iso-8859-7.vim
endif