Re: lib/41223: libcurses: curs_set and move do not cause refresh on getch

[Brett Lymn <blymn%baesystems.com.au@localhost>]

The following reply was made to PR lib/41223; it has been noted by GNATS.

From: Brett Lymn <blymn%baesystems.com.au@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: lib-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, 
netbsd-bugs%netbsd.org@localhost,
        jld%panix.com@localhost
Subject: Re: lib/41223: libcurses: curs_set and move do not cause refresh on 
getch
Date: Tue, 21 Apr 2009 22:12:04 +0930

 On Tue, Apr 21, 2009 at 05:25:02AM +0000, Jed Davis wrote:
 > 
 >  I've prepared a patch to make the change I proposed (of removing the
 >  is_wintouched check), and in minimal testing it appears to work.  See
 >  http://www.NetBSD.org/~jld/nbcurses-getch-refresh.diff , or below:
 >
 
 I do not think this is the correct thing to do.  It is unacceptable to
 force a refresh of the window for every character as this may mean, in
 some very dumb terminal cases, a redraw of the screen.
 
 SUS v2 is not clear on the expected behaviour and I, personally, don't
 hold a certain other curses package as being authorative on curses
 behaviour.
 
 A peek at the Open Solaris curses code shows they perform a fflush on
 the output file descriptor after the tput - I think that would be a
 better solution.
   
 -- 
 Brett Lymn
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