patch 8.0.0914: highlight attributes are always combined commit https://github.com/vim/vim/commit/0cd2a94a4030f6bd12eaec44db92db108e33c913 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Aug 12 15:12:30 2017 +0200 patch 8.0.0914: highlight attributes are always combined Problem: Highlight attributes are always combined. Solution: Add the 'nocombine' value to replace attributes instead of combining them. (scauligi, closes #1963)

function Test_Comparators()
  try
    let oldisident=&isident
    set isident+=#
    call assert_equal(1, 1 is#1)
  finally
    let &isident=oldisident
  endtry
endfunction