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Bug#975687: xterm: loses text lines, even descenders from some lines



On Thu, Nov 26, 2020 at 10:52:38PM +0000, Thorsten Glaser wrote:
> Thomas Dickey dixit:
> 
> >"Recently" could be something overlooked in #362's change
> 
> No, 362 is the current one, and I definitely had this in
> the previous version shipped in Debian as well, but I can’t
> narrow it down further than that. According to apt history
> log, that was 361.

I see - nothing comes to mind other than recalling some comment that
fontconfig wouldn't actually provide bitmap fonts.
 
> >On the other hand (if it's not specific to #362), a lot of the
> >font/display problems aren't xterm (and if the problem doesn't show up
> >on macOS, I wouldn't notice it right away).
> 
> Hmmh. It’s a regular X11 BDF/PCF font, so at least the
> ugly fontconfig/freetype/… combination doesn’t affect
> this, but as such you indeed won’t be able to see this
> on a Macintosh.
> 
> Since I can _somewhat_ reproduce this (three “sudo true”
> in quick succession did it right now), I could try to
> bisect releases until I find one, if that helps?

If you're going to compile it, the debug-trace can be useful
(--enable-trace).  If not, the -report-fonts option is helpful.

At the moment I'm closing out a set of changes for dialog,
intending to work on xterm for a week or so.  If I can
reproduce it, I'll see what I can do.

-- 
Thomas E. Dickey <dickey@invisible-island.net>
https://invisible-island.net
ftp://ftp.invisible-island.net

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