slock

commit 1622d2e64c38184e04e96613ccfc255437ca3046
parent 4ccf9ad6887b11be7f0790a666fae50a9a03d28e
Author: Tobias Stoeckmann <tobias@stoeckmann.org>
Date:   Sat, 25 Mar 2017 21:16:01 +0100

Properly clear the last entered character

When enter is pressed, passwd[len] will be set to '\0'. Pressing
backspace is supposed to remove the last entered character.

But currently, the clearing has an off-by-one, as in setting
passwd[len] to '\0' just like enter would do.

You can also verify it by imagining len=1 and that it's impossible to
clear passwd[0] by pressing backspace with the current code.

Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>

Diffstat:
M
slock.c
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/slock.c b/slock.c
@@ -177,7 +177,7 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 				break;
 			case XK_BackSpace:
 				if (len)
-					passwd[len--] = '\0';
+					passwd[--len] = '\0';
 				break;
 			default:
 				if (num && !iscntrl((int)buf[0]) &&