Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Date: Wed, 4 Sep 2002 23:26:02 -0400 From: Christopher Faylor To: cygwin@cygwin.com Subject: Re: Proposal for new cygwin flag: notextmode masks away O_TEXT Message-ID: <20020905032602.GC10427@redhat.com> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <20020904110128.B1213@cygbert.vinschen.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.3.23.1i On Wed, Sep 04, 2002 at 11:57:15PM +0200, Dan Vasaru wrote: >My apologies if this has already been discussed: > >I would just love a CYGWIN variable setting that would make cygwin ignore >the O_TEXT flag from all programs, thus bypassing any translation code in >cygwin1.dll. >May I suggest "notextmode", if not taken already :) > >At work, we're aiming for maximum UNIX compatibility between all files >across win32/linux/solaris. All this O_TEXT stuff really, really gets in the >way. All our mounts are binmode, yet the fact that some programs set the >O_TEXT flag, and cygwin doesn't ignore it, will at some point add a stray >carriage return (see various threads on CRLF) in various pipes and >redirects. No, it won't add a stray CR unless the file is opened as O_TEXT for output, which no programs in the cygwin release should be doing. O_TEXT for input specifically means that CRLFs are translated to LFs internally. It will *interpret* a CRLF as a LF, however, which has its own ramifcations. >We'd rather patch/wrap all non-cygwin utilities in our tool chain (i.e. >cl.exe) to output binmode only. Thinking of it, one could add an lf-ize >utility that invokes a program and adds CR to input while removing them from >output. This would keep the pipes clear of carriage returns. Why would you want to *add* a CR to input? A program which uses O_TEXT for input will still consider lines ending only with LF to be properly terminated. >lfize cl.exe | grep -v "^$" >lfize cat textfile | sed | awk > >I freely admit not offering much thought to CTRL+Z. I have a feeling that one of us still isn't getting something here. If you are willing to write a program which wraps every DOS program which outputs CRLF, then do that, mount everything with -b and you should be all set. cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/