yi-0.10.1: src/tests/vimtests/blockvisual/commentblock_1.test

-- Input
(1,3)
  foo bar
  baz xyzzy
  abc
123
-- Output
(1,3)
  @foo bar
  @baz xyzzy
  @abc
12@3
-- Events
<C-v>3jI@<Esc>