commit https://github.com/vim/vim/commit/012270936c3c7df3bba45ad2b48938c23a2fd43a Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jun 11 14:47:40 2016 +0200 patch 7.4.1917 Problem: History lines read from viminfo in different encoding than when writing are not converted. Solution: Convert the history lines.

" 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