From 426bc7fb4fcdd7e28544f8fb29854316a1784850 Mon Sep 17 00:00:00 2001
From: Josh Gao <jmgao@google.com>
Date: Wed, 16 Mar 2016 15:41:13 -0700
Subject: Fix "tail -f single_file".

TT.file_no was being incorrectly calculated as 0 when tail -f was passed
a single argument.
---
 toys/posix/tail.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'toys')

diff --git a/toys/posix/tail.c b/toys/posix/tail.c
index d1c62508..bf25a149 100644
--- a/toys/posix/tail.c
+++ b/toys/posix/tail.c
@@ -136,7 +136,7 @@ static void do_tail(int fd, char *name)
   int linepop = 1;
 
   if (toys.optflags & FLAG_f) {
-    int f = TT.file_no*2;
+    int f = (TT.file_no++)*2;
     char *s = name;
 
     if (!fd) sprintf(s = toybuf, "/proc/self/fd/%d", fd);
@@ -146,7 +146,7 @@ static void do_tail(int fd, char *name)
   }
 
   if (toys.optc > 1) {
-    if (TT.file_no++) xputc('\n');
+    if (TT.file_no) xputc('\n');
     xprintf("==> %s <==\n", name);
   }
 
-- 
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