nyancat

commit d9a28456b2727bf0d8ca6bf46686fc1aef9c4737
parent 3c4ea4c02aa74682db94a754d11a39a949d4396f
Author: Santtu Lakkala <inz@inz.fi>
Date:   Wed, 23 Feb 2022 16:50:03 +0200

Fix set-position off-by-one

Diffstat:
M
nyancat.c
 | 
6
++----

1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/nyancat.c b/nyancat.c
@@ -248,8 +248,6 @@ struct lolcat *lolcat_init(bool (*write_cb)(const char *buffer, size_t buflen,
 static char *strcpy_alter(char *to, const char *from, char f, char t)
 {
 	char *w = to;
-	while (*w)
-		w++;
 	for (; *from; from++) {
 		if (*from == f)
 			*w++ = t;
@@ -678,14 +676,14 @@ ssize_t lc_process(struct lolcat *lc, const char *buffer, size_t len)
 					strnsplit_int(buffer + i + 1,
 						      len - i - 1, ';', 1,
 						      &x);
-					lc->x = x;
+					lc->x = x - 1;
 				}
 				if (cmd == 'd') {
 					int y;
 					strnsplit_int(buffer + i + 1,
 						      len - i - 1, ';', 1,
 						      &y);
-					lc->y = y;
+					lc->y = y - 1;
 				}
 				if (cmd == 'J') {
 					if (atoi(buffer + i + 1) == 2) {