1 files changed, 19 insertions, 0 deletions
diff --git a/third_party/rust/termion/src/macros.rs b/third_party/rust/termion/src/macros.rs
new file mode 100644
index 0000000000..28370e36b4
--- /dev/null
+++ b/third_party/rust/termion/src/macros.rs
@@ -0,0 +1,19 @@
+/// Create a CSI-introduced sequence.
+macro_rules! csi {
+    ($( $l:expr ),*) => { concat!("\x1B[", $( $l ),*) };
+}
+
+/// Derive a CSI sequence struct.
+macro_rules! derive_csi_sequence {
+    ($doc:expr, $name:ident, $value:expr) => {
+        #[doc = $doc]
+        #[derive(Copy, Clone)]
+        pub struct $name;
+
+        impl fmt::Display for $name {
+            fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+                write!(f, csi!($value))
+            }
+        }
+    };
+}