Tests for curswant not changing when setting an option

STARTTEST
:so small.vim
:/^start target options$/+1,/^end target options$/-1 yank
:let target_option_names = split(@0)
:function TestCurswant(option_name)
:  normal! ggf8j
:  let curswant_before = winsaveview().curswant
:  execute 'let' '&'.a:option_name '=' '&'.a:option_name
:  let curswant_after = winsaveview().curswant
:  return [a:option_name, curswant_before, curswant_after]
:endfunction
:
:new
:put =['1234567890', '12345']
:1 delete _
:let result = []
:for option_name in target_option_names
:  call add(result, TestCurswant(option_name))
:endfor
:
:new
:put =map(copy(result), 'join(v:val, '' '')')
:1 delete _
:write test.out
:
:qall!
ENDTEST

start target options
	tabstop
	timeoutlen
	ttimeoutlen
end target options