Re: "stty discard undef" fails under Mac OS X

[Vincent Lefevre]

Hi,

Any news?

On 2007-02-14 19:43:09 +0100, Jim Meyering wrote:
> Vincent Lefevre <address@hidden> wrote:
> > Under Mac OS X:
> >
> > prunille:~> /usr/local/bin/stty --version
> > stty (GNU coreutils) 6.7
> > [...]
> > prunille:~> /usr/local/bin/stty discard undef
> > /usr/local/bin/stty: invalid argument `discard'
> > Try `/usr/local/bin/stty --help' for more information.
> > zsh: exit 1     /usr/local/bin/stty discard undef
> >
> > But with the stty provided by Mac OS X, "/bin/stty discard undef"
> > works as expected:
> >
> > prunille% /bin/stty -a | grep discard
> > cchars: discard = ^O; dsusp = ^Y; eof = ^D; eol = <undef>;
> > prunille% /bin/stty discard undef
> > prunille% /bin/stty -a | grep discard
> > cchars: discard = <undef>; dsusp = ^Y; eof = ^D; eol = <undef>;
> >
> > It seems that "stty flush undef" does the same thing and works
> > with the coreutils, but it isn't described in the coreutils stty(1)
> > man page and in the "stty --help" output:
> >
> > prunille:~> /usr/local/bin/stty --help | grep flush
> >  * dsusp CHAR    CHAR will send a terminal stop signal once input flushed
> >  * [-]imaxbel    beep and do not flush a full input buffer on a character
> >    [-]noflsh     disable flushing after interrupt and quit special 
> > characters
> 
> Thanks for the report.
> I hesitate to document "flush", but might add an alias "discard",
> and perhaps "stflush", since the latter is what Solaris 10 calls it.
> I'm inclined not to document "flush" since it's not specified by POSIX,
> and people might think it is the opposite of "noflsh".
> 
> If someone does a survey of what other vendor-provided versions of
> stty do (and summarizes here), that might accelerate the process.
> If you don't hear back in a couple weeks, please ping the list.

-- 
Vincent Lefèvre <address@hidden> - Web: <http://www.vinc17.org/>
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Work: CR INRIA - computer arithmetic / Arenaire project (LIP, ENS-Lyon)