From 5f58880c15ce3434c0eac8959ea1e07a91b0dc03 Mon Sep 17 00:00:00 2001
From: Elliott Hughes <enh@google.com>
Date: Sat, 9 Jan 2016 12:54:04 -0800
Subject: Fix tail -f /does/not/exist.

Exit immediately if we don't actually have anything to -f --- it's -f's
big brother -F that retries by name rather than by fd.
---
 toys/posix/tail.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/toys/posix/tail.c b/toys/posix/tail.c
index a00bfa0c..d1c62508 100644
--- a/toys/posix/tail.c
+++ b/toys/posix/tail.c
@@ -245,7 +245,7 @@ void tail_main(void)
   loopfiles_rw(args, O_RDONLY|(O_CLOEXEC*!(toys.optflags&FLAG_f)),
     0, 0, do_tail);
 
-  if (toys.optflags & FLAG_f) {
+  if ((toys.optflags & FLAG_f) && TT.file_no) {
     int len, last_fd = TT.files[(TT.file_no-1)*2], i, fd;
     struct inotify_event ev;
 
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