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fix(cli): Make --watcher CLEAR_SCREEN clear scrollback buffer as well as visible screen (#25997)
The --watch option should clear the screen scrollback buffer as well as the screen itself. On Ubuntu (22.04 Jammy) the 'clear' command generates "\x1B[H\x1B[2J\x1B[3J"; that is: - \E[H - cursor home - \E[2J - clear entire screen - \E[3J - clear entire screen & scrollback buffer. By contrast, Deno defined CLEAR_SCREEN as "\x1B[2J\x1B[1;1H", which fails to clear the scrollback buffer. The "\E[H\E[2J\E[3J" sequence works on MacOS (Sonoma) (using printf); I'm not able to test on Windows. Closes https://github.com/denoland/deno/issues/26514
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@ -30,7 +30,7 @@ use tokio::sync::mpsc;
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use tokio::sync::mpsc::UnboundedReceiver;
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use tokio::time::sleep;
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const CLEAR_SCREEN: &str = "\x1B[2J\x1B[1;1H";
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const CLEAR_SCREEN: &str = "\x1B[H\x1B[2J\x1B[3J";
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const DEBOUNCE_INTERVAL: Duration = Duration::from_millis(200);
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struct DebouncedReceiver {
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