Re: lib/56926: curses: vi screen corrupted with UTF-8 multicolumn characters

[RVP <rvp%SDF.ORG@localhost>]

The following reply was made to PR lib/56926; it has been noted by GNATS.

From: RVP <rvp%SDF.ORG@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: lib/56926: curses: vi screen corrupted with UTF-8 multicolumn
 characters
Date: Mon, 3 Oct 2022 23:46:10 +0000 (UTC)

 On Mon, 3 Oct 2022, Rin Okuyama wrote:
 
 > This is independent problem to this PR; not related to curses, but
 > problem of vi itself.
 >
 > leftright has long been broken for multi-column chars. It would be
 > nice if we can fix it, but codes are *REALLY* complicated.
 >
 
 You're right. I had tested the latest nvi2 source against ncurses and
 didn't see the problem. But, the nvi2 sources in -HEAD compiled with
 ncurses also dumps core. So it's an nvi2 issue, but, seems to be fixed
 (at least, the lr-scrolling issue is) in the latest sources on Github.
 
 The messed up screen (with BSD curses) remains, and also now a new
 coredump issue when the program exits.
 
 -RVP