Path: csiph.com!optima2.xanadu-bbs.net!xanadu-bbs.net!news.glorb.com!usenet.stanford.edu!not-for-mail From: Linda Walsh Newsgroups: gnu.bash.bug Subject: Re: BUG?: (or what's going on?) test for NL == NL fails (bash-4.3.39(3)-release) Date: Mon, 03 Aug 2015 11:09:53 -0700 Lines: 14 Approved: bug-bash@gnu.org Message-ID: References: <55BE6FB8.4080200@tlinx.org> <55BE7DD6.3040509@tlinx.org> <20150803115944.GE4309@eeg.ccf.org> NNTP-Posting-Host: lists.gnu.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: usenet.stanford.edu 1438625416 19822 208.118.235.17 (3 Aug 2015 18:10:16 GMT) X-Complaints-To: action@cs.stanford.edu Cc: bug-bash To: Greg Wooledge Envelope-to: bug-bash@gnu.org User-Agent: Thunderbird In-Reply-To: <20150803115944.GE4309@eeg.ccf.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x (no timestamps) [generic] X-Received-From: 173.164.175.65 X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com gnu.bash.bug:11291 Greg Wooledge wrote: > On Sun, Aug 02, 2015 at 01:30:14PM -0700, Linda Walsh wrote: >> isatty () { test -c /proc/self/fd/1 ; } > > This can be done portably with test -t 1 if you want the body of the > function to do what the name implies. (Testing for a character device > gives false positives if stdout is a tape drive or similar device.) --- -t is portable? I vaguely remember -t -- but I know I didn't when I wrote that function... thanks for the update!