tail: allow tail -n 0 or tail -0

fix a crash, but allow this option.
2015-03-30 21:24:46 +02:00 · 2015-03-30 21:24:46 +02:00 · d6aff89bbb
parent d583d12300
commit d6aff89bbb
2 changed files with 3 additions and 1 deletions
--- a/tail.c
+++ b/tail.c
@ -106,6 +106,9 @@ main(int argc, char *argv[])
 		usage();
 	} ARGEND;

+	if (!num)
+		return 0;
+
 	if (!argc)
 		tail(stdin, "<stdin>");
 	else {
--- a/tr.c
+++ b/tr.c
@ -39,7 +39,6 @@ static struct range *set2        = NULL;
 static size_t set2ranges         = 0;
 static int    (*set2check)(Rune) = NULL;

-
 static size_t
 rangelen(struct range r)
 {