patch 8.1.0256: using setline() in TextChangedI splits undo commit https://github.com/vim/vim/commit/9fa9506853516c82851baec643aa47458cb8b3bc Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 8 22:08:32 2018 +0200 patch 8.1.0256: using setline() in TextChangedI splits undo Problem: Using setline() in TextChangedI splits undo. Solution: Use another solution for undo not working properly.

#!/usr/bin/python
#
# Program that writes a number to stdout repeatedly
#
# This requires Python 2.6 or later.

from __future__ import print_function
import sys
import time

if __name__ == "__main__":

    done = 0
    while done < 10:
        done = done + 1
        print(done)
        sys.stdout.flush()
        time.sleep(0.05)  # sleep 50 msec