vim-patch:7.4.915

Problem:    When removing from 'path' and then adding, a comma may go missing.
            (Malcolm Rowe)
Solution:   Fix the check for P_ONECOMMA. (closes #471)

https://github.com/vim/vim/commit/174674743d9a2d7361c9cd89836f8dd8651edeeb

1 files changed, 18 insertions, 4 deletions

diff --git a/test/functional/legacy/options_spec.lua b/test/functional/legacy/options_spec.lua
index 773acb9663..21e99c4aa1 100644
--- a/test/functional/legacy/options_spec.lua
+++ b/test/functional/legacy/options_spec.lua
@@ -1,13 +1,27 @@
--- Test if ":options" throws any exception. The options window seems to mess
--- other tests, so restart nvim in the teardown hook
-
 local helpers = require('test.functional.helpers')
 local command, clear = helpers.command, helpers.clear
+local source, expect = helpers.source, helpers.expect
 
 describe('options', function()
   setup(clear)
 
-  it('is working', function()
+  it('should not throw any exception', function()
     command('options')
   end)
 end)
+
+describe('set', function()
+  setup(clear)
+
+  it("should keep two comma when 'path' is changed", function()
+    source([[
+      set path=foo,,bar
+      set path-=bar
+      set path+=bar
+      $put =&path]])
+
+    expect([[
+      
+      foo,,bar]])
+  end)
+end)