Bug#527806: exim4-config: fails during postinst "sed: -e expression #1, char 2: delimiter ..."

[Y Giridhar Appaji Nag]

Package: exim4-config
Version: 4.69-10
Severity: grave
Justification: renders package unusable

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I just did an aptitude update and a dist-upgrade and encountered this error.
Too late in the night to look at where the problem is, please let me know if
you would like me to provide some additional information.  Thank you for your
work on exim.

Errors were encountered while processing:
 exim4-config
 exim4-base
 exim4-daemon-light
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install.  Trying to recover:
Setting up exim4-config (4.69-10) ...
sed: -e expression #1, char 2: delimiter character is not a single-byte
character
dpkg: error processing exim4-config (--configure):
 subprocess post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of exim4-base:
 exim4-base depends on exim4-config (>= 4.30) | exim4-config-2; however:
  Package exim4-config is not configured yet.
  Package exim4-config-2 is not installed.
  Package exim4-config which provides exim4-config-2 is not configured yet.
dpkg: error processing exim4-base (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of exim4-daemon-light:
 exim4-daemon-light depends on exim4-base (>= 4.69); however:
  Package exim4-base is not configured yet.
dpkg: error processing exim4-daemon-light (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 exim4-config
 exim4-base
 exim4-daemon-light
Reading package lists... Done             
Building dependency tree       
Reading state information... Done
Reading extended state information      
Initializing package states... Done
Writing extended state information... Done

- -- Package-specific info:
Exim version 4.69 #1 built 02-May-2009 07:56:52
Copyright (c) University of Cambridge 2006
Berkeley DB: Berkeley DB 4.6.21: (September 27, 2007)
Support for: crypteq iconv() IPv6 GnuTLS move_frozen_messages
Lookups: lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmnz dnsdb dsearch nis nis0 passwd
Authenticators: cram_md5 plaintext
Routers: accept dnslookup ipliteral manualroute queryprogram redirect
Transports: appendfile/maildir/mailstore autoreply lmtp pipe smtp
Fixed never_users: 0
Size of off_t: 8
Configuration file is /var/lib/exim4/config.autogenerated
# /etc/exim4/update-exim4.conf.conf
#
# Edit this file and /etc/mailname by hand and execute update-exim4.conf
# yourself or use 'dpkg-reconfigure exim4-config'
#
# Please note that this is _not_ a dpkg-conffile and that automatic changes
# to this file might happen. The code handling this will honor your local
# changes, so this is usually fine, but will break local schemes that mess
# around with multiple versions of the file.
#
# update-exim4.conf uses this file to determine variable values to generate
# exim configuration macros for the configuration file.
#
# Most settings found in here do have corresponding questions in the
# Debconf configuration, but not all of them.
#
# This is a Debian specific file

dc_eximconfig_configtype='satellite'
dc_other_hostnames='loktak.appaji.net'
dc_local_interfaces='127.0.0.1'
dc_readhost='appaji.net'
dc_relay_domains=''
dc_minimaldns='false'
dc_relay_nets=''
dc_smarthost='mail.appaji.net'
CFILEMODE='644'
dc_use_split_config='false'
dc_hide_mailname='true'
dc_mailname_in_oh='true'
dc_localdelivery='mail_spool'
mailname:appaji.net

- -- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (800, 'unstable'), (700, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.29-1-686 (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages exim4-config depends on:
ii  adduser                       3.110      add and remove users and groups
ii  debconf [debconf-2.0]         1.5.26     Debian configuration management sy

exim4-config recommends no packages.

exim4-config suggests no packages.

- -- debconf information:
* exim4/dc_smarthost: mail.appaji.net
  exim4/dc_relay_domains:
  exim4/dc_localdelivery: mbox format in /var/mail/
* exim4/dc_eximconfig_configtype: mail sent by smarthost; no local mail
* exim4/dc_readhost: appaji.net
  exim4/exim4-config-title:
  exim4/dc_relay_nets:
* exim4/mailname: appaji.net
* exim4/dc_local_interfaces: 127.0.0.1
* exim4/dc_minimaldns: false
* exim4/dc_other_hostnames: loktak.appaji.net
  exim4/no_config: true
  exim4/hide_mailname: true
  exim4/dc_postmaster:
* exim4/use_split_config: false

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