patch 8.0.1225: no check for spell region being zero commit https://github.com/vim/vim/commit/ee03b941241eae1d36bc29b84eec09116cefe7cd Author: Bram Moolenaar <Bram@vim.org> Date: Fri Oct 27 00:57:05 2017 +0200 patch 8.0.1225: no check for spell region being zero Problem: No check for spell region being zero. (geeknik) Solution: Check for zero. (closes https://github.com/vim/vim/issues/2252)

$! test77a - help file creating checksum on VMS
$! Created by Zoltan Arpadffy
$
$ IF P1 .NES. ""
$ THEN
$    checksum 'P1'
$    show symb CHECKSUM$CHECKSUM
$ ENDIF