patch 8.2.0369: various Normal mode commands not fully tested

Problem:    Various Normal mode commands not fully tested.
Solution:   Add more tests. (Yegappan Lakshmanan, closes #5751)
diff --git a/src/testdir/test_charsearch.vim b/src/testdir/test_charsearch.vim
index 6f09e85..683bcab 100644
--- a/src/testdir/test_charsearch.vim
+++ b/src/testdir/test_charsearch.vim
@@ -1,3 +1,4 @@
+" Test for character search commands - t, T, f, F, ; and ,
 
 func Test_charsearch()
   enew!
@@ -60,3 +61,16 @@
   call assert_equal('ddd yee y', getline(6))
   enew!
 endfunc
+
+" Test for character search in virtual edit mode with <Tab>
+func Test_csearch_virtualedit()
+  new
+  set virtualedit=all
+  call setline(1, "a\tb")
+  normal! tb
+  call assert_equal([0, 1, 2, 6], getpos('.'))
+  set virtualedit&
+  close!
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab