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Re: Erroneous line endings (cat,gawk,text mount)
On Tue, Apr 22, 2003 at 07:54:17PM -0400, Igor Pechtchanski wrote:
> On Tue, 22 Apr 2003, Pierre A. Humblet wrote:
>
> > On Tue, Apr 22, 2003 at 10:54:41PM +0100, Peter S Tillier wrote:
> > > Replying to Igor Pechtchanski who wrote:
> > >
> > > > Also, "cat" will not translate line endings or anything at all --
> > > > it's just a character-by-character copy of stdin to stdout.
> > >
> > > Fair enough (and what I expect it to be) thanks for the clarification.
> >
> > Igor, how do you explain the following behavior?
> > ~: od -c
> > abc
> > 0000000 a b c \n
> > 0000004
> > ~: cat | od -c
> > abc
> > 0000000 a b c \r \n
> > 0000005
> > This is with CYGWIN undefined and stty -igncr icrnl
> > I get the \r no matter what I try for CYGWIN and stty.
> >
> > Pierre
>
> Pierre,
>
> Simple - cat opens files (including stdin) in binary mode, and a Return on
> the console apparently sends a CRLF. Try, for example, "cat -s" -- it
> opens stdin in text mode, and you will not get a CR. I don't think there
> currently is an option that controls whether a console Return sends a CR.
> Intuitively, IMO, it should also be controlled by "binmode". I'm guessing
> it's just a matter of copying some code from pipe.cc to fhandler_console.cc
> Igor
OK, but don't you expect "od" to also open files in binary mode?
And what do you make out of this?
~: cat /dev/tty | od -c
abc
0000000 a b c \n
0000004
Pierre
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