Re: [PATCH] stty: add support for extproc/LINEMODE

[Howard Chu]

Pádraig Brady wrote:
> On 22/01/15 22:52, Bernhard Voelker wrote:
> > On 01/21/2015 07:21 PM, Pádraig Brady wrote:
> > > Add support for the "extproc" option which is well described at:
> > > http://lists.gnu.org/archive/html/bug-readline/2011-01/msg00004.html
> >
> > The patch LGTM per se, but I wonder how to test it: although it has
> > made its way into the Linux kernel, the option doesn't seem to have
> > any effect in a regular xterm, does it?
>
> Not that I can see.
> The existing tests, check the kernel accepts and registers the option at least,
> which is all we can really do.
>
> thanks for the review.

Currently the only thing that will visibly show any difference is a 
patched telnetd. If you use the telnet patch here 
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=585527#20 and then run 
the telnet client with option debugging enabled, you'll see the effect 
of turning extproc on and off.

(And you'll only see the difference if you're using a dumb shell with no 
fancy input editing. Using bash, you'd need it linked against a patched 
libreadline to see any difference / get any benefit. 
https://groups.google.com/forum/#!topic/gnu.bash.bug/o0UA55AhADs )

--
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/