commit https://github.com/vim/vim/commit/16ec3c9be3fcdc38530bddb12978bc5a7b98c0f6 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jul 18 22:22:39 2016 +0200 patch 7.4.2067 Problem: Compiler warning for char/char_u conversion. (Tony Mechelynck) Inefficient code. Solution: Use more lines to fill with spaces. (Nikolai Pavlov) Add type cast.

" Test 'autochdir' behavior

if !exists("+autochdir")
  finish
endif

func Test_set_filename()
  call test_autochdir()
  set acd
  new
  w samples/Xtest
  call assert_equal("Xtest", expand('%'))
  call assert_equal("samples", substitute(getcwd(), '.*/\(\k*\)', '\1', ''))
  bwipe!
  set noacd
  call delete('samples/Xtest')
endfunc