patch 8.2.0982: insufficient testing for reading/writing files Commit: https://github.com/vim/vim/commit/b340baed9f7fc1c19a0742e2214d54982190c15e Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jun 15 19:51:56 2020 +0200 patch 8.2.0982: insufficient testing for reading/writing files Problem: Insufficient testing for reading/writing files. Solution: Add more tests. (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/6257) Add "ui_delay" to test_override() and use it for the CTRL-O test.

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