Re: lib/55579: [libcurses] inconsistent behaviour of subwindows

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

The following reply was made to PR lib/55579; 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
Subject: Re: lib/55579: [libcurses] inconsistent behaviour of subwindows
Date: Sat, 12 Nov 2022 07:56:47 +1030

 On Sun, Aug 16, 2020 at 07:50:00PM +0000, jnaman806%gmail.com@localhost wrote:
 > 
 > The curses is showing strange behavior, consider a hierarchy of 3 windows; win1, win2, win3 in order. Adding a string in win2, win3 and then refreshing win1 must not reflect changes. These changes can be made possible if sycnok on win2/win3. 
 > Current behaviour is: changes made to win2 are reflected and those made to win3 are not.
 > 
 
 After careful reading of susv2 I believe that this is the correct behaviour.  The spec says
 that a refresh of a window will propagate changes from a sub window to the parent which is
 what is being observed.  The syncok call permits changes from a sub window to be propagated
 to all ancestors of the sub window instead of just the parent.
 
 -- 
 Brett Lymn
 --
 Sent from my NetBSD device.
 
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