From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sat, 1 Jul 2006 23:49:46 +0000 (+0000)
Subject: (tail invocation): With no operand, 'tail -f' now
X-Git-Tag: v6.0~240
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0830b1b82aa96651e7194211a8992f976f8c2683;p=thirdparty%2Fcoreutils.git

(tail invocation): With no operand, 'tail -f' now
silently ignores the '-f' only if standard input is a FIFO or pipe
and POSIXLY_CORRECT is set.
---

diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 35134366fa..abc226ea7f 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -2501,8 +2501,7 @@ by 1048576.
 @vindex name @r{follow option}
 @vindex descriptor @r{follow option}
 Loop forever trying to read more characters at the end of the file,
-presumably because the file is growing.  This option is ignored if
-no @var{file} operand is specified and standard input is a pipe.
+presumably because the file is growing.
 If more than one file is given, @command{tail} prints a header whenever it
 gets output from a different file, to indicate which file that output is
 from.
@@ -2534,6 +2533,10 @@ growing.
 The option values @samp{descriptor} and @samp{name} may be specified only
 with the long form of the option, not with @option{-f}.
 
+@vindex POSIXLY_CORRECT
+If @env{POSIXLY_CORRECT} is set, the @option{-f} option is ignored if
+no @var{file} operand is specified and standard input is a pipe.
+
 @item -F
 @opindex -F
 This option is the same as @option{--follow=name --retry}.  That is, tail