commit https://github.com/vim/vim/commit/827b165b2aebad2cfe98cc6d5804c6c0fe8afd89 Author: Bram Moolenaar <Bram@vim.org> Date: Thu May 5 18:14:03 2016 +0200 patch 7.4.1819 Problem: Compiler warnings when sprintf() is a macro. Solution: Don't interrupt sprintf() with an #ifdef. (Michael Jarvis, closes https://github.com/vim/vim/issues/788)

" Tests for Visual mode
if !has('multi_byte')
  finish
endif
set encoding=utf-8
scriptencoding utf-8

if !has('visual')
  finish
endif

func Test_block_shift_multibyte()
  split
  call setline(1, ['xヹxxx', 'ヹxxx'])
  exe "normal 1G0l\<C-V>jl>"
  call assert_equal('x	 ヹxxx', getline(1))
  call assert_equal('	ヹxxx', getline(2))
  q!
endfunc