commit https://github.com/vim/vim/commit/385111bd86e0b38667879c3e89506ca1ae98e1df Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 12 19:23:00 2016 +0100 patch 7.4.1547 Problem: Getting a cterm highlight attribute that is not set results in the string "-1". Solution: Return an empty string. (Taro Muraoka)

#!/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"