Re: lib/51819: curses vs. news/tin display problems

[Brett Lymn <blymn%internode.on.net@localhost>]

The following reply was made to PR lib/51819; it has been noted by GNATS.

From: Brett Lymn <blymn%internode.on.net@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: lib-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost,
        uwe%NetBSD.org@localhost
Subject: Re: lib/51819: curses vs. news/tin display problems
Date: Thu, 12 Jan 2017 07:40:48 +1030

 On Wed, Jan 11, 2017 at 03:30:01PM +0000, Valery Ushakov wrote:
 > 
 >  The problem seems to be that on NetBSD scrl(3)
 >  
 >       If a scrolling region has been set with the setscrreg() or wsetscrreg()
 >       functions and the current cursor position is inside the scrolling region,
 >       then only the area inside the scrolling region is scrolled.
 >  
 >  and otherwise the whole window is scrolled.
 >  
 >  ncurses always scrolls the scroll region, regardless of the current
 >  cursor position.
 >  
 >  SUSv2 X/Open curses scrl(3) says that
 >  
 >    The interaction of these functions with setscrreg() is currently
 >    unspecified.
 >  
 
 In that case we probably should look at making NetBSD curses follow
 ncurses to reduce surprises...
 
 -- 
 Brett Lymn
 Let go, or be dragged - Zen proverb.