After:
  bwipeout

Execute (:Lookup jumps to autoload variable):
  edit fixture/plugin/auto.vim
  normal! 5G^3w
  call lookup#lookup()
  AssertEqual 'fixture/autoload/auto/foo.vim', expand('%')
  AssertEqual [5, 5], [line('.'), col('.')]
  call lookup#pop()
  normal! k
  AssertEqual 'fixture/plugin/auto.vim', expand('%')
  call lookup#lookup()
  AssertEqual 'fixture/autoload/auto/foo.vim', expand('%')
  AssertEqual [5, 5], [line('.'), col('.')]

Execute (:Lookup jumps to autoload function):
  edit fixture/plugin/auto.vim
  normal! 8G^3w
  call lookup#lookup()
  AssertEqual 'fixture/autoload/auto/foo.vim', expand('%')
  AssertEqual [1, 11], [line('.'), col('.')]
  call lookup#pop()
  normal! k
  AssertEqual 'fixture/plugin/auto.vim', expand('%')
  call lookup#lookup()
  AssertEqual 'fixture/autoload/auto/foo.vim', expand('%')
  AssertEqual [1, 11], [line('.'), col('.')]
  call lookup#pop()
  normal! 10G23|
  AssertEqual 'fixture/plugin/auto.vim', expand('%')
  call lookup#lookup()
  AssertEqual 'fixture/autoload/auto/foo.vim', expand('%')
  AssertEqual [1, 11], [line('.'), col('.')]
