From 5c6c7e14131c7f0302b28053e6a77960acb679bd Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Mon, 9 Jun 2025 10:58:45 +0200
Subject: db: Discard unsupported ansi sequences

Similarly to 360d54234f76 ("kd: Discard unsupported ansi sequences"), we
should discard unsupported ansi sequences in db input, notably the
bracketed paste sequences.
---
 ddb/db_input.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/ddb/db_input.c b/ddb/db_input.c
index 357474b7..04d67510 100644
--- a/ddb/db_input.c
+++ b/ddb/db_input.c
@@ -343,6 +343,17 @@ db_inputchar(int c)
 
 	    default:
 	    plain:
+		if (was_csi) {
+			if (c == '?' || c == '<' || (c >= '0' && c <= '9') || c == ';') {
+				/* Still in CSI */
+				csi = 1;
+				break;
+			}
+			if (c >= '@' && c <= '~')
+				/* Unsupported sequence, silently drop */
+				break;
+			/* Odd sequence, print it */
+		}
 		if (db_le == db_lbuf_end) {
 		    cnputc('\007');
 		}
-- 
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