Bug#257311: base-config: Minor errors shows when executing a shell

[Christian Perrier <bubulle@debian.org>]

Package: base-config
Version: 2.33
Severity: minor

When executing a shell in base-config (happend to me accidentally...:-)), a
small "error" message shows up before getting the shell:

./menu/shell: line 8: export: '/root': not a valid identifier

I suspect some bashism somewhere (?)

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.6-2-686
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (ignored: LC_ALL set to fr_FR.UTF-8)

Versions of packages base-config depends on:
ii  adduser                 3.57             Add and remove users and groups
ii  apt                     0.5.25           Advanced front-end for dpkg
ii  bsdutils                1:2.12-7         Basic utilities from 4.4BSD-Lite
ii  console-data            2002.12.04dbs-42 Keymaps, fonts, charset maps, fall
ii  console-tools           1:0.2.3dbs-53    Linux console and font utilities
ii  debconf                 1.4.29           Debian configuration management sy
ii  debianutils             2.8.3            Miscellaneous utilities specific t
ii  gettext-base            0.14.1-2         GNU Internationalization utilities
ii  passwd                  1:4.0.3-28.5     Change and administer password and

-- debconf information excluded