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Bug#507372: cdebconf-newt-udeb: does not show enough choices for long descriptions

Jérémy Bobbio <lunar@debian.org> writes:

> The issue probably requires more invasive changes in the newt
> frontend; let's postpone them to better times.

I'm trying to reproduce the issue in a normal system context instead
of the installer environment for easier debugging.  However, I can't
get any reasonable line wrapping: running the postinst of apt-setup on
a self compiled cdebconf in a 80x24 xterm like

$ DEBIAN_FRONTEND=newt /.../src/debconf DEBIAN/postinst

results in the following screen (except with line-drawing characters):

  +----------------------+ [?] Configuring postinst +-----------------------+
  |                                                                         | 
  | Debian has two services that provide updates to releases: security and volat
  | Security updates help to keep your system secured against attacks. Enabling
  | Volatile updates provide more current versions for software that changes rel
  | releases.
  | Services to use:
  |             [*] security updates (from security.debian.org)
  |             [ ] volatile updates (from volatile.debian.org)
  |     <Go Back>                                            <Continue>
  |                                                                         | 

<Tab> moves between items; <Space> selects; <Enter> activates buttons

What should I do to get correct line wraps, so that the bug shows up?

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