From 90d1e30ebd9b7c2480a3abe0cd41335dda0ce75d Mon Sep 17 00:00:00 2001
From: nhmall <nhmall@nethack.org>
Date: Tue, 26 Dec 2023 13:48:56 -0500
Subject: [PATCH] follow-up to display.c, add a comment

---
 src/display.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/display.c b/src/display.c
index 5ccb03a9c..08ffb95f3 100644
--- a/src/display.c
+++ b/src/display.c
@@ -1542,6 +1542,9 @@ static glyph_info no_ginfo = {
     }
 };
 #ifndef UNBUFFERED_GLYPHINFO
+/* Note that the 'glyph' argument is not used in the expansion
+ * of this !UNBUFFERED_GLYPHINFO (default) variation, but is
+ * a requirement for the UNBUFFERED_GLYPHINFO variation */
 #define Glyphinfo_at(x, y, glyph) \
     (((x) < 0 || (y) < 0 || (x) >= COLNO || (y) >= ROWNO) ? &no_ginfo   \
      : &gg.gbuf[(y)][(x)].glyphinfo)