[Bug 1572416] Re: do-release-upgrade crashes in Greek locale

[Alkis Georgopoulos]

On the fourth try, I did manage to get it to continue by pressing "ν",
which is the Greek letter for "y", Yes.

"ο" which is the Greek letter for "N", No, also worked.

So to sum up the bugs I saw:
1) [Enter] should work and select the default choice when the prompt is "[yN]". It didn't; it prompt me again.

2)
a) The code is wrong, it should support both the English letters (y/n) and the localized ones (ν/ο).
b) OR, the translation is wrong and it shouldn't list the English letters.

3) Ctrl+C didn't revert my sources.list.

4) The initial crash while pressing "λ".

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https://bugs.launchpad.net/bugs/1572416

Title:
  do-release-upgrade crashes in Greek locale

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  I tried `do-release-upgrade -d` on an up to date 14.04 system, with
  Greek locale=el_GR.UTF-8.

  I got notified that some packages are no longer supported by Canonical, and then I got this prompt:
  Continue [yN] λεπτομέρειες [λ]

  λεπτομέρειες means details.

  I tried pressing [λ] and I got the (hopefully attached) crash. If it's
  not attached, I also uploaded it to http://paste.ubuntu.com/15941779/.

  Then it restarted the upgrade process and it got to the same prompt. At that point, [λ] worked and showed me the no-longer supported packages,
  but y/n didn't work at all, so I couldn't continue.

  I pressed Ctrl+C to abort the upgrade process,
  but now `do-release-upgrade -d` tells me there's no new distribution available to upgrade to, possibly because it's checking my just-broken sources.list...

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.13.0-85.129-generic 3.13.11-ckt36
  Uname: Linux 3.13.0-85-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed Apr 20 08:52:43 2016
  InstallationDate: Installed on 2015-01-29 (446 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64+mac (20140722.2)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=el
   TERM=xterm
   PATH=(custom, no user)
   LANG=el_GR.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-04-20 (0 days ago)

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