[Bug 1073077] Re: zsh complains about locale_warn on launch

[Clint Byrum]

Hello Marti, or anyone else affected,

Accepted cloud-init into quantal-proposed. The package will build now
and be available at http://launchpad.net/ubuntu/+source/cloud-
init/0.7.0-0ubuntu2.1 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: cloud-init (Ubuntu Quantal)
       Status: In Progress => Fix Committed

** Tags removed: verification-done

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/1073077

Title:
  zsh complains about locale_warn on launch

Status in Init scripts for use on cloud images:
  Fix Released
Status in “cloud-init” package in Ubuntu:
  Fix Released
Status in “zsh” package in Ubuntu:
  New
Status in “cloud-init” source package in Precise:
  Fix Committed
Status in “cloud-init” source package in Quantal:
  Fix Committed

Bug description:
  == SRU Information ==
  [Impact] 
   * Users who select zsh as shell and invoke /etc/profile.d scripts
     see an error message like:
      locale_warn:13: * not found
   * This contained fix makes that error message go away, and makes
     the Z99-cloud-locale-test.sh script in /etc/profile.d function
     properly with zsh.
   * The fix adds new code to run 'emulate -L sh' if and only if the variable
     ZSH_NAME is defined (which is only likely to be true if shell is zsh).
     Per zshbuiltins(1), '-L' to 'emulate' indicates that the change in
     behavior should be limited to the containing function.

  [Test Case]
   * launch cloud-image instance, get IP address and set 'IP' for use below.
   * install zsh, change the 'ubuntu' user's shell
       LC_ALL=en_US.UTF-8 ssh ubuntu@$IP \
          "sudo DEBIAN_FRONTEND=noninteractive apt-get install -y zsh"
   * problem is then reproduced with:
       LC_ALL=fr_FR.UTF-8 zsh /etc/profile.d/Z99-cloud-locale-test.sh
     Instead of seeing a message about invalid locale and how to fix it, the
     user will see:
       locale_warn:13: * not found

  [Regression Potential] 
   * chance for regression is low, since the only real change is contained
     with a condition that will limit it to the case where the shell is zsh.
   * If there was fallout, it would one of:
     * 'emulate -L' being run with non-zsh shell, likely resulting in an error
       message but nothing worse.
     * user's zsh shell being changed to 'emulate sh' (if the '-L' did not
       get applied correctly)

  == End SRU Information ==

  
  zsh complains if an '=' occurs in a suffix or prefix shell parameter expansion.

    $ sh -c 'f="foo=bar"; echo ${f%%=*}'
    foo
    $ bash -c 'f="foo=bar"; echo ${f%%=*}'
    foo
    $ zsh -c 'f="foo=bar"; echo ${f%%=*}'
    zsh:1: * not found

  It is work-aroundable by escaping the '=' in the shell suffix match with a '\'. Ie:
    $ zsh -c 'f="foo=bar"; echo ${f%%\=*}'
    foo

  == original bug report ==

  After upgrading my Amazon machine to Ubuntu 12.04, every time I run zsh I get the following output:
      locale_warn:13: * not found

  Apparenlty this is caused by the file /etc/profile.d/Z99-cloud-locale-
  test.sh in the cloud-init package. zsh always outputs an error when a
  glob like * fails to match any files.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: cloud-init 0.6.3-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-32.51-virtual 3.2.30
  Uname: Linux 3.2.0-32-virtual i686
  ApportVersion: 2.0.1-0ubuntu14
  Architecture: i386
  Date: Tue Oct 30 11:03:46 2012
  Ec2AMI: ami-fb9ca98f
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: eu-west-1c
  Ec2InstanceType: c1.medium
  Ec2Kernel: aki-4deec439
  Ec2Ramdisk: unavailable
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, user)
   LANG=en_GB.UTF-8
   SHELL=/usr/bin/zsh
  SourcePackage: cloud-init
  UpgradeStatus: Upgraded to precise on 2012-10-29 (0 days ago)

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