From d41c4b9195da70465994acc3ad857b428f798203 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Mon, 18 Nov 2019 12:46:52 +0100
Subject: [PATCH] csi: implement "Send Device Attributes (Tertiary DA)"

---
 csi.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/csi.c b/csi.c
index bf5cca7b..fbfac35d 100644
--- a/csi.c
+++ b/csi.c
@@ -1248,6 +1248,24 @@ csi_dispatch(struct terminal *term, uint8_t final)
         break; /* private == '!' */
     }
 
+    case '=': {
+        switch (final) {
+        case 'c':
+            /* Send Device Attributes (Tertiary DA) */
+
+            /* Note: this is supposed to be the "unit ID". But it is
+             * unclear what the format *is*. Here I've simply copied
+             * the reply from xterm */
+            term_to_slave(term, "\033P!|00000000\033\\", 14);
+            break;
+
+        default:
+            UNHANDLED();
+            break;
+        }
+        break; /* private == '=' */
+    }
+
     default:
         UNHANDLED();
         break;