patch 8.2.1471: :const only locks the variable, not the value Commit: https://github.com/vim/vim/commit/241572794f7e93d2f8b762de2300e5f7e4f07628 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Aug 16 22:50:01 2020 +0200 patch 8.2.1471: :const only locks the variable, not the value Problem: :const only locks the variable, not the value. Solution: Lock the value as ":lockvar 1 var" would do. (closes https://github.com/vim/vim/issues/6719)

" Test :version Ex command

func Test_version()
  " version should always return the same string.
  let v1 = execute('version')
  let v2 = execute('version')
  call assert_equal(v1, v2)

  call assert_match("^\n\nVIM - Vi IMproved .*", v1)
endfunc

" vim: shiftwidth=2 sts=2 expandtab