From 66ed6297b0f5b6e571f675840388e0956c5deb9d Mon Sep 17 00:00:00 2001
From: Jan Edmund Lazo <janedmundlazo@hotmail.com>
Date: Mon, 20 Aug 2018 21:24:30 -0400
Subject: vim-patch:8.0.1441: using ":undo 0" leaves undo in wrong state

Problem:    Using ":undo 0" leaves undo in wrong state.
Solution:   Instead of searching for state 1 and go above, just use the start.
            (Ozaki Kiichi, closes vim/vim#2595)
https://github.com/vim/vim/commit/ce46d934af35d0f774be7f996001db03cf0b894a
---
 src/nvim/testdir/test_undo.vim | 44 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

(limited to 'src/nvim/testdir')

diff --git a/src/nvim/testdir/test_undo.vim b/src/nvim/testdir/test_undo.vim
index f31499607b..83ede1dc37 100644
--- a/src/nvim/testdir/test_undo.vim
+++ b/src/nvim/testdir/test_undo.vim
@@ -390,3 +390,47 @@ funct Test_undofile()
 
   set undodir&
 endfunc
+
+func Test_undo_0()
+  new
+  set ul=100
+  normal i1
+  undo
+  normal i2
+  undo
+  normal i3
+
+  undo 0
+  let d = undotree()
+  call assert_equal('', getline(1))
+  call assert_equal(0, d.seq_cur)
+
+  redo
+  let d = undotree()
+  call assert_equal('3', getline(1))
+  call assert_equal(3, d.seq_cur)
+
+  undo 2
+  undo 0
+  let d = undotree()
+  call assert_equal('', getline(1))
+  call assert_equal(0, d.seq_cur)
+
+  redo
+  let d = undotree()
+  call assert_equal('2', getline(1))
+  call assert_equal(2, d.seq_cur)
+
+  undo 1
+  undo 0
+  let d = undotree()
+  call assert_equal('', getline(1))
+  call assert_equal(0, d.seq_cur)
+
+  redo
+  let d = undotree()
+  call assert_equal('1', getline(1))
+  call assert_equal(1, d.seq_cur)
+
+  bwipe!
+endfunc
-- 
cgit