Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uwm.edu!wuarchive!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.unix.wizards
Subject: Re: Curses question
Keywords: key interpretation problems
Message-ID: <3904@auspex.auspex.com>
Date: 15 Aug 90 20:33:18 GMT
References: <551@edpmgt.UUCP>
Organization: Auspex Systems, Santa Clara
Lines: 26

>(editor's note: This may be a duplicate transmision.  Sorry if you got it
>twice)

I only saw it once, but I did see the matching posting in
"comp.sys.sun"....

>The first one involves interpretation of input keys.  How can one tell the
>difference between the forward and backward tabs??  When I run my test   
>program, I get 0x09 for both.

As noted, the problem here is that in a "shelltool" window, there *is*
no difference.  What's more, different terminals may transmit different
things for the "backward tab", assuming they even have one; the BSD
"curses" doesn't have any way of recognizing the particular terminal's
notion of a "backward tab" sequence and translating it into some common
code for "backward tab".  The S5 "curses" might be able to do that.

>In addition, the code I'm getting in my test program for a return is
>different that the code which is returned in the real program (0x0a vs.
>0x0d) and yes, these two programs are being run on the same system.      

But probably *not* with the same modes.  0x0a is NL, and 0x0d is CR. 
The RETURN key on most terminals - including the "terminal" emulated by
a "shelltool" - sends CR; however, in some modes the UNIX tty driver
turns CR into NL.  Check out such "curses" functions as "nl()" and
"nonl()", which affect whether this mapping is in effect....