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-rw-r--r--src/nvim/testdir/test_expr.vim5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/nvim/testdir/test_expr.vim b/src/nvim/testdir/test_expr.vim
index 7483973fca..189ecce2fe 100644
--- a/src/nvim/testdir/test_expr.vim
+++ b/src/nvim/testdir/test_expr.vim
@@ -92,3 +92,8 @@ endfunc
func Test_set_reg_null_list()
call setreg('x', v:_null_list)
endfunc
+
+func Test_special_char()
+ " The failure is only visible using valgrind.
+ call assert_fails('echo "\<C-">')
+endfunc