From e8daed41ea47760743f35ef5c928695c84cc6e7e Mon Sep 17 00:00:00 2001
From: Nick Briggs <nicholas.h.briggs@gmail.com>
Date: Tue, 16 May 2023 18:52:23 -0700
Subject: [PATCH] UNIX-GETPARM(DISPLAY) should return "SDL" for SDL-based
 display, as it returns "X" for X11

---
 src/uutils.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/uutils.c b/src/uutils.c
index 5a6607b..e3a58b2 100644
--- a/src/uutils.c
+++ b/src/uutils.c
@@ -219,6 +219,8 @@ LispPTR unix_getparm(LispPTR *args) {
   } else if (strcmp(envname, "DISPLAY") == 0) {
 #if defined(XWINDOW)
     envvalue = "X";
+#elif defined(SDL)
+    envvalue = "SDL";
 #elif defined(DISPLAYBUFFER)
     envvalue = "BUFFERED";
 #else