Hey.

It seems that apt only gives a warning (and exit status 0) in case a section
has been specified in sources.list, which doesn't exist.

E.g. aptitde doesn't seem to even show that warning.


Isn't that kind of a "security issue"? Imagine someone simply mistypes his
  deb http://security.debian.org/debian-security/ stable-security mian
line and thus wouldn't see any updates.
If updating the package lists (and perhps even upgrading) is handled
automatically, this may be easily unnoticed.


Cheers,
Chris.