commit https://github.com/vim/vim/commit/d6a8d48587b2ff43c343fa365898576cc1e235ea Author: Bram Moolenaar <Bram@vim.org> Date: Wed Feb 10 20:32:20 2016 +0100 patch 7.4.1298 Problem: When the channel test fails in an unexpected way the server keeps running. Solution: Use try/catch. (Ozaki Kiichi)

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