Actually, we've handled FIFOs on stdin in accordance with POSIX since 1996.

query and ok jmc@

1 files changed, 6 insertions, 11 deletions

diff --git a/usr.bin/tail/tail.1 b/usr.bin/tail/tail.1
index de5719b1e3b..470dc4bf9f6 100644
--- a/usr.bin/tail/tail.1
+++ b/usr.bin/tail/tail.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: tail.1,v 1.19 2014/05/31 23:08:53 jmc Exp $
+.\"	$OpenBSD: tail.1,v 1.20 2014/06/03 19:27:31 guenther Exp $
 .\"	$NetBSD: tail.1,v 1.4 1994/11/23 07:42:13 jtc Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1991, 1993
@@ -33,7 +33,7 @@
 .\"
 .\"	@(#)tail.1	8.1 (Berkeley) 6/6/93
 .\"
-.Dd $Mdocdate: May 31 2014 $
+.Dd $Mdocdate: June 3 2014 $
 .Dt TAIL 1
 .Os
 .Sh NAME
@@ -98,7 +98,9 @@ This makes
 more useful for watching log files that may get rotated.
 The
 .Fl f
-option is ignored if the standard input is a pipe, but not if it is a FIFO.
+option is ignored if there are no
+.Fa file
+arguments and the standard input is a pipe or a FIFO.
 .It Fl n Ar number \*(Ba Fl Ns Ar number
 The location is
 .Ar number
@@ -151,14 +153,7 @@ The
 .Nm
 utility is compliant with the
 .St -p1003.1-2008
-specification,
-except
-.St -p1003.1-2008
-says the
-.Fl f
-option should be ignored if
-.Ar file
-is a FIFO.
+specification.
 .Pp
 The flags
 .Op Fl br