Curses programming: cursor handled incorrectly #4102
Description
Environment
Windows build number: Microsoft Windows [Version 10.0.19041.1]
Windows Terminal version : Version: 0.7.3451.0
CPython: 3.7.4
CPython package curses(Windows-curses)
Steps to reproduce
Open cmd or PowerShell inside Windows Terminal, with python run
def main():
window = curses.initscr()
curses.noecho()
curses.nonl()
curses.nocbreak()
curses.raw()
window.keypad(False)
x = 0
y = 0
while True:
window.refresh()
c = window.getch()
window.addstr(0, 0, str(c))
if c == ord('q'):
return
elif c == ord('a'):
x = 10
elif c == ord('b'):
y = 10
else:
x = 0
y = 0
pass
window.move(y, x)
try:
main()
finally:
curses.endwin()Expected behavior
Press a, the cursor move to (0, 10) immediately.
Actual behavior
After pressing a, the cursor doesn't move to (0, 10) immediately, i.e., the screen show doesn't change at all. Then after an another pressing, the cursor moves to (0, 10).
P.S:
- Expected behavior is according to the package
cursesbundled in Python of Linux distros. - Things work perfectly when we use
cmdorPowerShellwithout Windows Terminal.