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DECRQCRA: treat uninitialized cells as spaces

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The concept of uninitialized cells in wezterm is not the same as that on
VT520 or that on xterm, so treat them as spaces, at least when asking
for the checksum of a single cell, which is what esctest does.
This commit is contained in:
Luis Javier Merino Morán 2023-11-12 13:46:12 +01:00 committed by Wez Furlong
parent fde926722f
commit 769840d2cb
1 changed files with 11 additions and 1 deletions
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10
term/src/terminalstate/mod.rs
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@ -1979,8 +1979,18 @@ impl TerminalState {
checksum += u16::from(ch as u8);
}
}
// Treat uninitialized cells as spaces.
// The concept of uninitialized cells in wezterm is not the same as that on VT520 or that
// on xterm, so, to prevent a lot of noise in esctest, treat them as spaces, at least when
// asking for the checksum of a single cell (which is what esctest does).
// See: https://github.com/wez/wezterm/pull/4565
if checksum == 0 {
32u16
} else {
checksum
}
}
fn perform_csi_window(&mut self, window: Window) {
match window {