patch 8.2.0773: switching to raw mode every time ":" is used Commit: https://github.com/vim/vim/commit/3b1f18f785f67c6cd110498c366e4d0c0fe11f27 Author: Bram Moolenaar <Bram@vim.org> Date: Sat May 16 23:15:08 2020 +0200 patch 8.2.0773: switching to raw mode every time ":" is used Problem: Switching to raw mode every time ":" is used. Solution: When executing a shell set cur_tmode to TMODE_UNKNOWN, so that the next time TMODE_RAW is used it is set, but not every time.

#!/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