patch 8.1.0542: shiftwidth() does not take 'vartabstop' into account commit https://github.com/vim/vim/commit/f951416a8396a54bbbe21de1a8b16716428549f2 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Nov 22 03:08:29 2018 +0100 patch 8.1.0542: shiftwidth() does not take 'vartabstop' into account Problem: shiftwidth() does not take 'vartabstop' into account. Solution: Use the cursor position or a position explicitly passed. Also make >> and << work better with 'vartabstop'. (Christian Brabandt)

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