Bug#818349: exim4-base: Still warns about purging the environment, even with add_environment set

[Matthew Vernon]

Package: exim4-base
Version: 4.84.2-1
Severity: important

Hi,

I upgraded my jessie systems to 4.84.2-1 and added an add_environment
setting thus:
add_environment = <; PATH=/bin:/usr/bin

The upstream advisory says:

"If both options are not used in the configuration, Exim issues a
warning on startup. This warning disappears if at least one of these
options is used (even if set to an empty value)."

Yet:
root at mws-priv-21:~# /usr/sbin/exim4 -bP | grep environment
LOG: MAIN
  Warning: purging the environment.
 Suggested action: use keep_environment.
add_environment = <; PATH=/bin:/usr/bin
keep_environment = 

This is clearly not the correct behaviour, and I'm getting a lot of
cron mail :-(

[FTAOD, this is not the same as #817244 - that was a testing system,
and setting add_environment there had the desired result]

Thanks,

Matthew

-- Package-specific info:
Exim version 4.84_2 #2 built 13-Mar-2016 17:47:19
Copyright (c) University of Cambridge, 1995 - 2014
(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2014
Berkeley DB: Berkeley DB 5.3.28: (September  9, 2013)
Support for: crypteq iconv() IPv6 GnuTLS move_frozen_messages DKIM PRDR OCSP
Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmjz 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 /etc/exim4/exim4.conf

-- System Information:
Debian Release: 8.3
  APT prefers stable-backports
  APT policy: (500, 'stable-backports'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.2.0-0.bpo.1-amd64 (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages exim4-base depends on:
ii  adduser                        3.113+nmu3
ii  cron [cron-daemon]             3.0pl1-127+deb8u1
ii  debconf [debconf-2.0]          1.5.56
ii  exim4-config [exim4-config-2]  4.84.2-1
ii  libc6                          2.19-18+deb8u3
ii  libdb5.3                       5.3.28-9
ii  lsb-base                       4.1+Debian13+nmu1
ii  netbase                        5.3

Versions of packages exim4-base recommends:
ii  bsd-mailx [mailx]  8.1.2-0.20141216cvs-2
ii  perl-modules       5.20.2-3+deb8u4
ii  psmisc             22.21-2

Versions of packages exim4-base suggests:
ii  bsd-mailx [mail-reader]          8.1.2-0.20141216cvs-2
ii  emacs24 [mail-reader]            24.4+1-5
pn  exim4-doc-html | exim4-doc-info  <none>
pn  eximon4                          <none>
pn  file                             <none>
ii  openssl                          1.0.1k-3+deb8u4
pn  spf-tools-perl                   <none>
pn  swaks                            <none>

-- Configuration Files:
/etc/logrotate.d/exim4-base changed:
/var/log/exim4/mainlog /var/log/exim4/rejectlog {
	daily
	missingok
	rotate 10
	compress
	delaycompress
	notifempty
	create 644 Debian-exim adm
}


-- debconf information:
  exim4/purge_spool: false
  exim4-base/drec: