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-rw-r--r--src/nvim/testdir/test_diffmode.vim19
1 files changed, 19 insertions, 0 deletions
diff --git a/src/nvim/testdir/test_diffmode.vim b/src/nvim/testdir/test_diffmode.vim
index 3a0c615cf6..fe928c0f65 100644
--- a/src/nvim/testdir/test_diffmode.vim
+++ b/src/nvim/testdir/test_diffmode.vim
@@ -1146,6 +1146,25 @@ func Test_diff_followwrap()
bwipe!
endfunc
+func Test_diff_maintains_change_mark()
+ enew!
+ call setline(1, ['a', 'b', 'c', 'd'])
+ diffthis
+ new
+ call setline(1, ['a', 'b', 'c', 'e'])
+ " Set '[ and '] marks
+ 2,3yank
+ call assert_equal([2, 3], [line("'["), line("']")])
+ " Verify they aren't affected by the implicit diff
+ diffthis
+ call assert_equal([2, 3], [line("'["), line("']")])
+ " Verify they aren't affected by an explicit diff
+ diffupdate
+ call assert_equal([2, 3], [line("'["), line("']")])
+ bwipe!
+ bwipe!
+endfunc
+
func Test_diff_rnu()
CheckScreendump