[Reportbug-maint] Bug#810944: querybts: Mutt looks garbled after SIGWINCH

Daniel Shahaf danielsh at apache.org
Thu Jan 14 00:13:41 UTC 2016

Package: reportbug
Version: 6.6.6
Severity: normal
Tags: patch

Dear Maintainer,

   * What led up to the situation?

I ran 'querybts' in an xterm and resized the xterm while querybts was running.

   * What exactly did you do (or not do) that was effective (or

1. Resize the terminal to 80x25.
2. Run 'querybts 808808'.
3. Maximize the terminal window.  [This can be done during or after the
   next step, too, but must be done after typing <Enter> at the end of
   the previous step.]
4. Type <q><e><Enter> to close 'less' and open 'mutt'.

   * What was the outcome of this action?

Mutt only used the top-left 80x25 cells of the terminal.

   * What outcome did you expect instead?

Mutt using the full size of the maximized terminal.


The root of the problem is that the $LINES and $COLUMNS environment variables
have outdated values after the resize.  Having a SIGWINCH handler that either
unsets those two variables or updates their values fixes the issue.  Patches
to do both are attached.

(The patches are mutually exclusive.)



P.S. Full disclosure: The code in the putenv() patch is based on Apache
Licensed code from [1].  I assume that is okay.
[1] https://svn.apache.org/viewvc/subversion/trunk/build/run_tests.py?revision=1717356&view=markup#l81

-- Package-specific info:
** Environment settings:
DEBEMAIL="Daniel Shahaf <danielsh at apache.org>"
DEBFULLNAME="Daniel Shahaf"

** /home/daniel/.reportbugrc:
reportbug_version "6.6.3"
mode standard
ui text
realname "Daniel Shahaf"
email "danielsh at apache.org"
header "X-Debbugs-CC: danielsh at apache.org"
smtphost reportbug.debian.org
mbox_reader_cmd "mutt -f %s"

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.3.0-1-amd64 (SMP w/1 CPU core)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages reportbug depends on:
ii  apt               1.1.10
ii  python-reportbug  6.6.6
pn  python:any        <none>

reportbug recommends no packages.

Versions of packages reportbug suggests:
pn  claws-mail                                 <none>
pn  debconf-utils                              <none>
pn  debsums                                    <none>
pn  dlocate                                    <none>
pn  emacs23-bin-common | emacs24-bin-common    <none>
ii  exim4                                      4.86-7
ii  exim4-daemon-light [mail-transport-agent]  4.86-7+b1
ii  file                                       1:5.25-2
ii  gnupg                                      1.4.20-1
pn  python-gtk2                                <none>
pn  python-gtkspellcheck                       <none>
pn  python-urwid                               <none>
pn  python-vte                                 <none>
pn  xdg-utils                                  <none>

Versions of packages python-reportbug depends on:
ii  apt               1.1.10
ii  file              1:5.25-2
ii  python-debian     0.1.27
ii  python-debianbts  2.6.0
pn  python:any        <none>

python-reportbug suggests no packages.

-- no debconf information
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