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From: net@tub.UUCP
Newsgroups: comp.sources.bugs
Subject: Re: Bugfixes/Enhancements to "screen" - (nf)
Message-ID: <52100003@tub.UUCP>
Date: Sun, 26-Jul-87 16:21:00 EDT
Article-I.D.: tub.52100003
Posted: Sun Jul 26 16:21:00 1987
Date-Received: Tue, 28-Jul-87 00:42:52 EDT
References: <256@srs.UUCP>
Lines: 46
Nf-ID: #R:srs:-25600:tub:52100003:000:2216
Nf-From: tub!net    Jul 26 21:21:00 1987

> Here is an update for the "screen" program posted several months ago.

I'm sorry to tell you this, but I have submitted a new release of screen to
the moderator of comp.sources.unix three weeks ago; it is certainly not
possible to apply your patches to the new release without modification.
Incidentally, some of your enhancements have already been incorporated into
this release...

[I don't know why screen has not yet appeared in comp.sources.unix;
sometime this week I'm going to write a letter to Rich Salz asking if
he received my submission at all, or if there is some other problem.]

>     patch2:  Fixes a small bug that would crash "screen" when run
> 	     under SunWindows (terminal type = sun).

I have published a patch fixing this problem together with the other
patch; I wonder why you have got only one of them.

> 		1) The ability to explicitly name each window

I had also planned to implement a function to "label" windows; however, I was
not quite sure how screen should obtain the name for a newly created window
(via C-a C-c); I don't like the idea to directly prompt the user for input
(i.e. read from the keyboard), because this causes all other windows to
"hang" until the call to read() terminates.

> 		3) Doesn't redraw the current window if you happen
> 		   to change to the same one (via "^A[0-9]")

The new release of screen doesn't redraw the display upon C-a C-a when
there is only one window.  However, it still doesn't detect C-a <n> when
window <n> is already active...

> 		5) Makes an entry into "/etc/utmp" [...]
> 		   This code is stolen from the "grotwin" package [...]

I don't like this patch very much.  The utmp-code from "grotwin" is somewhat
ugly and it doesn't work on 4.3 BSD systems with the new /etc/ttys format.
The new release of screen contains code to properly handle /etc/utmp on 4.2
and (new-format /etc/ttys) 4.3 systems (using the gettyent(3) functions, if
possible).  It also contains the code that is necessary when you want install
screen as set-uid with owner root (so that it is able to modify /etc/utmp if
it is not writable for world).

    Oliver Laumann, Technical University of Berlin, Germany.
    ...!pyramid!tub!net   or   net@TUB.BITNET