commit https://github.com/vim/vim/commit/a803c7f94070f94b831fdfd1984f288c8b825b5d Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jan 15 15:31:39 2016 +0100 patch 7.4.1092 Problem: It is not simple to test for an exception and give a proper error message. Solution: Add assert_exception().

#!/bin/sh
# enable DEC locator input model on remote terminal
printf  "\033[1;2'z\033[1;3'{\c"
vim "$@"
# disable DEC locator input model on remote terminal
printf  "\033[2;4'{\033[0'z\c"