commit https://github.com/vim/vim/commit/ea3f2e7be447a8f0c4436869620f908de5e8ef1e Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jul 10 20:27:32 2016 +0200 patch 7.4.2023 Problem: buflist_findname_stat() may find a dummy buffer. Solution: Set the BF_DUMMY flag after loading a dummy buffer. Start finding buffers from the end of the list.

Test for ":options".

STARTTEST
:so small.vim
:let caught = 'ok'
:try
  :options
:catch 
  :let caught = v:throwpoint . "\n" . v:exception
:endtry
:buf 1
:$put =caught
:"
:" Test that changing 'path' keeps two commas.
:set path=foo,,bar
:set path-=bar
:set path+=bar
:$put =&path
:/^result/,$w! test.out
:qa!
ENDTEST

result