Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!mcgill-vision!bloom-beacon!snorkelwacker!think!ames!lll-winken!gauss.llnl.gov!casey
From: casey@gauss.llnl.gov (Casey Leedom)
Newsgroups: comp.bugs.4bsd
Subject: Re: script problem
Keywords: script, pty, ^S/^Q, RAW/CBREAK modes, TIOCPKT
Message-ID: <42001@lll-winken.LLNL.GOV>
Date: 20 Dec 89 02:16:45 GMT
References: <1571@uwm.edu>
Sender: usenet@lll-winken.LLNL.GOV
Reply-To: casey@gauss.llnl.gov (Casey Leedom)
Organization: Lawrence Livermore National Laboratory
Lines: 18

| From: wls@csd4.csd.uwm.edu (Bill Stapleton)
| 
| I note that other programs, notably rlogin, use the TIOCPKT feature of
| the pty to figure out when RAW mode is necessary, running CBREAK (with its
| own local flow-control) otherwise.  Is there a reason that script doesn't
| do this?  (apologies if I've condensed this down past making any sense)

  I think you're just running into the fact that script isn't used that
often and rlogin, etc. are.  It took extra code to do the TIOCPKT
processing you describe and it just never became that important an
issue.  I'm sure that, if you were to write, test and submit it, Berkeley
would accept simple patch implementing the same kind of line control
facilities found in rlogin.  Unfortunately Berkeley is far too busy with
other things with higher priorities to have any time left over for this.
I mean, which would you rather have: a new virtual memory, NFS, etc. or
this small problem in script fixed? :-)

Casey