fix: stop sgr mouse sequences leaking into panes

refs #939

1 files changed, 32 insertions, 0 deletions

diff --git a/src/terminal_modes.rs b/src/terminal_modes.rs
new file mode 100644
index 00000000..953a5812
--- /dev/null
+++ b/src/terminal_modes.rs
@@ -0,0 +1,32 @@
+use std::io::{self, Write};
+
+const DISABLE_HOST_MOUSE_REPORTING_SEQUENCE: &[u8] =
+    b"\x1b[?1006l\x1b[?1016l\x1b[?1015l\x1b[?1005l\x1b[?1003l\x1b[?1002l\x1b[?1000l";
+
+#[cfg(not(windows))]
+pub(crate) fn clear_host_mouse_reporting<W: Write>(writer: &mut W) -> io::Result<()> {
+    writer.write_all(DISABLE_HOST_MOUSE_REPORTING_SEQUENCE)?;
+    writer.flush()
+}
+
+#[cfg(windows)]
+pub(crate) fn clear_host_mouse_reporting<W: Write>(_writer: &mut W) -> io::Result<()> {
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn clears_all_known_host_mouse_modes() {
+        let sequence = std::str::from_utf8(DISABLE_HOST_MOUSE_REPORTING_SEQUENCE).unwrap();
+
+        for mode in ["1000", "1002", "1003", "1005", "1006", "1015", "1016"] {
+            assert!(
+                sequence.contains(&format!("\x1b[?{mode}l")),
+                "missing mouse mode {mode}"
+            );
+        }
+    }
+}