[bug #37822] incomplete redraw - droppings on screen

[Norbert Preining]

URL:
  <http://savannah.gnu.org/bugs/?37822>

                 Summary: incomplete redraw - droppings on screen
                 Project: texinfo - GNU documentation system
            Submitted by: norbusan
            Submitted on: Wed 28 Nov 2012 12:30:13 AM GMT
                Category: info
                 Release: 
                Priority: 5 - Normal
                Severity: 3 - Normal
              Item Group: bug
                 Privacy: Public
             Open/Closed: Open
             Assigned to: None
         Discussion Lock: Any
                  Status: None

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Details:

Hi,

on Debian we got two bug reports that info does not properly redraw the screen
in some circumstances. The first one I could reproduce with 4.13.91. Original
quote follows, the mentioned .info file is attached to this bug:
------- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=596856 --
I have the following display problem. I don't think this comes from
the terminal as the problem is reproducible with both xterm and
gnome-terminal.

1. Open a 80x76 terminal (e.g. xterm or gnome-terminal).
2. Type "info ./mpfr.info.gz" (with the attached file).
3. Search for "random" (type: /random[Return]).
4. Search for the next 7 occurrences (/[Return] 7 times).

At the last occurrence, one has:

6.4 Removed Functions
=====================

Functions `mpfr_random' and `mpfr_random2' have been removed in MPFR
3.0 (this only affects old code built against MPFR 3.0 or later).  (The
function `mpfr_random' had been deprecated since at least MPFR 2.2.0,
and `mpfr_random2' since MPFR 2.4.0.)

[several blank lines]

     use `mpfr_get_z_exp'.

[...]

The "use `mpfr_get_z_exp'." shouldn't be there. It disappears with
a Ctrl-L.
----------------------------------------------

Another similar bug report is in
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=408463 which I quote here:
------- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=408463 ---
Install libtool-doc, run "info libtool", search (s) for "symbolic",
and repeat the search (s RETURN) 3 times. On the third time, there's a
dropping of the part-word "ide" (from "idea") on the left-hand end of
a line under "man" and next to "These". I get this result in an xterm
of 34 lines and 127 columns, and an rxvt of 34 lines and 113 columns.
---------------------

This one I tried to reproduce without success.

Thanks

Norbert



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File Attachments:


-------------------------------------------------------
Date: Wed 28 Nov 2012 12:30:13 AM GMT  Name: mpfr.info.gz  Size: 48kB   By:
norbusan
info file that exhibits the screen droppings in the first case
<http://savannah.gnu.org/bugs/download.php?file_id=26986>

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