Strange xterm scrolling problem introduced in XTerm(289)

Strange xterm scrolling problem introduced in XTerm(289)

[Jim Reisert AD1C]

A strange scrolling problem seems to have been introduced in XTerm(289)

I have a large scrollback buffer.  Now when I scroll back my xterm,
anything that was previously "above" the top of the current screen
appears indented about 20 spaces:

                                                - r w x - - - - - - +
 1   r e i s e r t   D o m a i n   U s e rs 424739 Feb 12
                                                - r w x - - - - - - +
 1   r e i s e r t   D o m a i n   U s e rs 424740 Feb 12
-rwx------+ 1 reisert Domain Users 424749 Feb 12 14:43 callsigns.csv.~29~
-rwx------+ 1 reisert Domain Users 424749 Feb 12 14:44 callsigns.csv

Can anyone duplicate this?  Note that when I copied/pasted the above
lines into gmail, the first two lines (in the scrollback buffer)
appeared in a different font than the two lines that were not in the
buffer.

--
Jim Reisert AD1C, <jjreisert@alum.mit.edu>, http://www.ad1c.us

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Re: Strange xterm scrolling problem introduced in XTerm(289)

[Thomas Dickey]

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On Tue, Feb 12, 2013 at 02:54:22PM -0700, Jim Reisert AD1C wrote:
> A strange scrolling problem seems to have been introduced in XTerm(289)
> 
> I have a large scrollback buffer.  Now when I scroll back my xterm,
> anything that was previously "above" the top of the current screen
> appears indented about 20 spaces:

I've not seen that (and think I should have, if it's that easy to
reproduce).  The only difference in scrolling between #288/#289 was a
one-line revert of a change from #282.

Did you run #288 before this update?  (288 had several fixes for
Coverity warnings, one of the #289 changes fixed something that
I broke in addressing those).

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

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Re: Strange xterm scrolling problem introduced in XTerm(289)

[Jim Reisert AD1C]

On Tue, Feb 12, 2013 at 4:01 PM, Thomas Dickey wrote:

> Did you run #288 before this update?  (288 had several fixes for
> Coverity warnings, one of the #289 changes fixed something that
> I broke in addressing those).

I believe I had been running #288 at one point.  I just updated Cygwin
and could only revert to 287 (not 288).  There is no scrollback
problem with this version.

- Jim

-- 
Jim Reisert AD1C, <jjreisert@alum.mit.edu>, http://www.ad1c.us

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Re: Strange xterm scrolling problem introduced in XTerm(289)

[Thomas Dickey]

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On Tue, Feb 12, 2013 at 04:22:05PM -0700, Jim Reisert AD1C wrote:
> On Tue, Feb 12, 2013 at 4:01 PM, Thomas Dickey wrote:
> 
> > Did you run #288 before this update?  (288 had several fixes for
> > Coverity warnings, one of the #289 changes fixed something that
> > I broke in addressing those).
> 
> I believe I had been running #288 at one point.  I just updated Cygwin
> and could only revert to 287 (not 288).  There is no scrollback
> problem with this version.

hmm - _looking_ for the problem, I ran uxterm with valgrind (which reported
no problem...), but I resized the window back and forth a few times and
after several tries, got some debris on the screen which corresponds
to what you're describing.  (Scrolling with the shifted pageup/pagedown
or with the scrollbar didn't produce it; it's the repainting due to
resizes dragging text out of the scrollback which gives the result).

thanks for the report (I'll work on this now)

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

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Re: Strange xterm scrolling problem introduced in XTerm(289)

[Thomas Dickey]

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On Tue, Feb 12, 2013 at 06:50:48PM -0500, Thomas Dickey wrote:
> On Tue, Feb 12, 2013 at 04:22:05PM -0700, Jim Reisert AD1C wrote:
> > On Tue, Feb 12, 2013 at 4:01 PM, Thomas Dickey wrote:
> > 
> > > Did you run #288 before this update?  (288 had several fixes for
> > > Coverity warnings, one of the #289 changes fixed something that
> > > I broke in addressing those).
> > 
> > I believe I had been running #288 at one point.  I just updated Cygwin
> > and could only revert to 287 (not 288).  There is no scrollback
> > problem with this version.
> 
> hmm - _looking_ for the problem, I ran uxterm with valgrind (which reported
> no problem...), but I resized the window back and forth a few times and
> after several tries, got some debris on the screen which corresponds
> to what you're describing.  (Scrolling with the shifted pageup/pagedown
> or with the scrollbar didn't produce it; it's the repainting due to
> resizes dragging text out of the scrollback which gives the result).
> 
> thanks for the report (I'll work on this now)

The problem is that in reverting the change from #282, I missed
a piece - will followup with a _short_ patch for #290...

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

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