patch 8.2.1786: various Normal mode commands not fully tested

Problem:    Various Normal mode commands not fully tested.
Solution:   Add more tests. (Yegappan Lakshmanan, closes #7059)
diff --git a/src/testdir/test_regexp_utf8.vim b/src/testdir/test_regexp_utf8.vim
index cc7df9e..a1c06b4 100644
--- a/src/testdir/test_regexp_utf8.vim
+++ b/src/testdir/test_regexp_utf8.vim
@@ -495,8 +495,8 @@
 func Test_search_with_end_offset()
   new
   call setline(1, ['', 'dog(a', 'cat('])
-  exe "normal /(/e+" .. "\<CR>"
-  normal "ayn
+  exe "normal /(/e+\<CR>"
+  normal n"ayn
   call assert_equal("a\ncat(", @a)
   close!
 endfunc