Add support for Query Device Status

2 files changed, 10 insertions, 3 deletions

diff --git a/src/ansi.rs b/src/ansi.rs
index 18636760..a3f5c2d2 100644
--- a/src/ansi.rs
+++ b/src/ansi.rs
@@ -128,6 +128,9 @@ pub trait Handler {
     /// TODO this should probably return an io::Result
     fn identify_terminal<W: io::Write>(&mut self, &mut W) {}
 
+    // Report device status
+    fn device_status<W: io::Write>(&mut self, &mut W) {}
+
     /// Move cursor forward `cols`
     fn move_forward(&mut self, Column) {}
 
@@ -716,7 +719,7 @@ impl<'a, H, W> vte::Perform for Performer<'a, H, W>
                 handler.move_up(Line(arg_or_default!(idx: 0, default: 1) as usize));
             },
             'B' | 'e' => handler.move_down(Line(arg_or_default!(idx: 0, default: 1) as usize)),
-            'c' | 'n' => handler.identify_terminal(writer),
+            'c' => handler.identify_terminal(writer),
             'C' | 'a' => handler.move_forward(Column(arg_or_default!(idx: 0, default: 1) as usize)),
             'D' => handler.move_backward(Column(arg_or_default!(idx: 0, default: 1) as usize)),
             'E' => handler.move_down_and_cr(Line(arg_or_default!(idx: 0, default: 1) as usize)),
@@ -871,8 +874,7 @@ impl<'a, H, W> vte::Perform for Performer<'a, H, W>
                     i += 1; // C-for expr
                 }
             }
-            // TODO this should be a device status report
-            // 'n' => handler.identify_terminal(writer),
+            'n' => handler.device_status(writer),
             'r' => {
                 if private {
                     unhandled!();
diff --git a/src/term/mod.rs b/src/term/mod.rs
index 9f49ae55..e3510b11 100644
--- a/src/term/mod.rs
+++ b/src/term/mod.rs
@@ -1240,6 +1240,11 @@ impl ansi::Handler for Term {
     }
 
     #[inline]
+    fn device_status<W: io::Write>(&mut self, writer: &mut W) {
+        let _ = writer.write_all(b"\x1b0n");
+    }
+
+    #[inline]
     fn move_down_and_cr(&mut self, lines: Line) {
         trace!("[unimplemented] move_down_and_cr: {}", lines);
     }