patch 9.0.0101: invalid memory access in diff mode with "dp" and undo Commit: https://github.com/vim/vim/commit/4e677b9c40ccbc5f090971b31dc2fe07bf05541d Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jul 28 18:44:27 2022 +0100 patch 9.0.0101: invalid memory access in diff mode with "dp" and undo Problem: Invalid memory access in diff mode with "dp" and undo. Solution: Make sure the line number does not go below one.

#!/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