Bug#215856: /usr/bin/apt-get: give error for invalid arguments rather than ignoring them

[Dan Jacobson <jidanni@jidanni.org>]

Package: apt
Version: 0.5.12
Severity: wishlist
File: /usr/bin/apt-get

Please emit an error message instead of ignoring any arguments.

# apt-get dist-upgrade install thuban --print-uris -qyy|sum
58186    92
# apt-get dist-upgrade  --print-uris -qyy|sum
58186    92
# apt-get dist-upgrade  --print-uris -qyy|grep thuban
# apt-get dist-upgrade install thubanxxx --print-uris -qyy|sum
58186    92
# apt-get dist-upgrade zzzzz thubanxxx --print-uris -qyy|sum
58186    92
# apt-get dist-upgrade remove ttttt --print-uris -qyy|sum
58186    92

These days not many programs ignore arguments.
$ perl x y z
Can't open perl script "x": No such file or directory
$ awk x y z
awk: cmd. line:2: fatal: cannot open file `y' for reading (No such file or directory)
$ expr x y z
expr: syntax error