Bug#102423: apt: /etc/apt/preferences is very picky about extra whitespace

["Karl M. Hegbloom" <karlheg@hegbloom.net>]

Package: apt
Version: 0.5.4

 The preferences mechanism doesn't work at all if there are extraneous
 spaces at the end of lines, etc. in the config file.  This should be
 documented, at the very least.

-- System Information
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux bittersweet 2.4.9vp6 #1 SMP Sun Sep 2 14:47:13 PDT 2001 i686
Locale: LANG=C, LC_CTYPE=C

Versions of packages apt depends on:
ii  libc6                  2.2.4-1           GNU C Library: Shared libraries an
ii  libstdc++2.10-glibc2.2 1:2.95.4-0.010902 The GNU stdc++ library