[129] in bug-owl

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Artifact bug

daemon@ATHENA.MIT.EDU (Marleigh I Norton)
Thu Feb 13 09:20:30 2003

Message-Id: <200302131415.JAA28832@department-of-alchemy.mit.edu>
To: bug-owl@MIT.EDU
cc: marleigh@MIT.EDU
Date: Thu, 13 Feb 2003 09:15:55 -0500
From: Marleigh I Norton <marleigh@MIT.EDU>


Every once in a while, my screen gets these wacky artifacts.  Like if I
had a zephyr, and then I scroll down to the next one which has an empty
line (just a carriage return, no characters), and if the screen adjusts
itself to the scroll such that the empty line in zephyr 2 appears
where some of the text of zephyr 1 was, rather than being an empty line
like it should be, the original text of zephyr 1 will not be overwritten
and remain on the screen.  Scrolling far right, then back again often
fixes the problem, though sometimes it just shifts the text a few spaces
to the right.

Multiple line zephyrs seem to occasionally behave strangely in a similar
way, at least in terms of shifting.  Sometimes they work fine, and
sometimes they shift right a few spaces with a ^@^@ inserted at the
beginning:

     marleigh: "She has a lovely face;
              ^@^@ God in His mercy lend her grace,
              ^@^@ the Lady of Shallott"          

I do admit, I'm customizing to allow for multiple line zephyrs, but
nothing that odd.  There's a copy of my .owlconf in
/mit/marleigh/Public/.owlconf if you'd like to check.

Today, when I logged in and owl automatically started a zlist command,
the following text appeared on the screen, after the normal output of
zlist:

  x+)\s*$/m) { $out .= "Subject: $1"; }
  x
  x        return($out."\n");
  x
  x    }
  x
  x
  x
  x    ## The remainder formats normal messages (eg, to classes and
  instancex
qqx    ## Outgoing messages have different headers than incoming
  messages.  xqqq

The zlist artifacts never used to happen in the previous version of owl.
The other issues - shifting right, random characters staying on the
screen, multi-line zephyrs - also came up in the previous version of
owl, though not as often, I think.  Incidentally, Ctrl-l doesn't help
with any of these problems.

Marleigh

PS:  I'm mostly sending mail as I notice things, on the theory that it's
data, and data is good.  If you'd like less mail and prefer I only
report serious bugs, let me know.

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