commit https://github.com/vim/vim/commit/b127cfd75f59e82580df395b6e2c009774644b16 Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 29 16:24:50 2016 +0200 patch 7.4.1858 Problem: When a channel writes to a buffer it doesn't find a buffer by the short name but re-uses it anyway. Solution: Find buffer also by the short name.

" 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