patch 8.1.1780: warning for file no longer available is repeated commit https://github.com/vim/vim/commit/674e2bde6e7b0c468f304713aa8f97a45e1fcc89 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jul 31 20:21:01 2019 +0200 patch 8.1.1780: warning for file no longer available is repeated Problem: Warning for file no longer available is repeated every time Vim is focused. (Brian Armstrong) Solution: Only give the message once. (closes #4748)

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