patch 8.1.0619: :echomsg and :echoerr do not handle List and Dict commit https://github.com/vim/vim/commit/461a7fcfce3cd6414f990037e6468af3b5ccf119 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Dec 22 13:28:07 2018 +0100 patch 8.1.0619: :echomsg and :echoerr do not handle List and Dict Problem: :echomsg and :echoerr do not handle List and Dict like :echo does. (Daniel Hahler) Solution: Be more tolerant about the expression result type.

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