Tests for "r<Tab>" with 'smarttab' and 'expandtab' set/not set.
Also test that dv_ works correctly

STARTTEST
:so small.vim
:set smarttab expandtab ts=8 sw=4
:" make sure that backspace works, no matter what termcap is used
:set t_kD=x7f t_kb=x08
/some
r	:set noexpandtab
/other
r	
:" Test replacing with Tabs and then backspacing to undo it
0wR			
:" Test replacing with Tabs
0wR			
:" Test that copyindent works with expandtab set
:set expandtab smartindent copyindent ts=8 sw=8 sts=8
o{
x:set nosol
/Second line/
fwdv_:?^start?,$w! test.out
:qa!
ENDTEST

start text
		some test text
test text
		other test text
    a cde
    f ghi
test text
  Second line beginning with whitespace