Anti flicker on legacy windows terminal #3696
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as noted here: https://stackoverflow.com/questions/24964940/python-curses-tty-screen-blink The user sees the old screen, then a completely blank screen, then your new screen. Do not clear line, just move to home.
add no_clear flag
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Type of changes
Checklist
Description
Solving issues #3264 and many similar issues running rich on Windows Legacy Terminal.
To reduce flickering on Windows Legacy Terminal, it is best not to erase old screen content as suggested on this stackoverflow python curses tty screen blink](https://stackoverflow.com/questions/24964940/python-curses-tty-screen-blink)
Since I couldn't find a reliable way to detect Windows Legacy Terminal, I opt for "no_clear" flag instead.
Feel free to modify this patch.