From 5fa767f5f20a025793d4968f9421e946c1612c4b Mon Sep 17 00:00:00 2001
From: Louis Burda <quent.burda@gmail.com>
Date: Thu, 28 Sep 2023 02:15:31 +0200
Subject: Ignore initial control modifier keypresse

---
 config.def.h | 3 +++
 slock.c      | 5 +++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/config.def.h b/config.def.h
index 81a55af..a329228 100644
--- a/config.def.h
+++ b/config.def.h
@@ -8,6 +8,9 @@ static const char *colorname[NUMCOLS] = {
 	[FAILED] = "#CC3333",   /* wrong password */
 };
 
+/* allow control key to trigger fail on clear */
+static const int controlkeyclear = 0;
+
 /* treat a cleared input like a wrong password (color) */
 static const int failonclear = 1;
 
diff --git a/slock.c b/slock.c
index 962bf7d..8974197 100644
--- a/slock.c
+++ b/slock.c
@@ -184,8 +184,9 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 					passwd[--len] = '\0';
 				break;
 			default:
-				if (num && !iscntrl((int)buf[0]) &&
-				    (len + num < sizeof(passwd))) {
+				if (controlkeyclear && iscntrl((int)buf[0]))
+					continue;
+				if (num && (len + num < sizeof(passwd))) {
 					memcpy(passwd + len, buf, num);
 					len += num;
 				}
-- 
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