patch 8.2.0755: Vim9: No error when variable initializer is not a constant Commit: https://github.com/vim/vim/commit/227a69de1e0f9457a9fc9e098d999304faff55f8 Author: Bram Moolenaar <Bram@vim.org> Date: Fri May 15 18:17:28 2020 +0200 patch 8.2.0755: Vim9: No error when variable initializer is not a constant Problem: Vim9: No error when variable initializer is not a constant. Solution: Return FAIL when trying to get a variable value. Do not execute a script when an error is deteted in the first or second phase.

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