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-rw-r--r--src/nvim/testdir/test_tabline.vim11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/nvim/testdir/test_tabline.vim b/src/nvim/testdir/test_tabline.vim
index 117d962d08..3a18206078 100644
--- a/src/nvim/testdir/test_tabline.vim
+++ b/src/nvim/testdir/test_tabline.vim
@@ -86,6 +86,17 @@ func Test_tabline_empty_group()
set tabline=
endfunc
+" When there are exactly 20 tabline format items (the exact size of the
+" initial tabline items array), test that we don't write beyond the size
+" of the array.
+func Test_tabline_20_format_items_no_overrun()
+ set showtabline=2
+
+ let tabline = repeat('%#StatColorHi2#', 20)
+ let &tabline = tabline
+ redrawtabline
+ set showtabline& tabline&
+endfunc
" vim: shiftwidth=2 sts=2 expandtab