Bug#990381: sources.list(5): clarify whether file URI schema is secure or not

[Christoph Anton Mitterer <calestyo@scientia.net>]

Few more further minor things in sources.list(5):

1) Check-Date, unlike all the other options, doesn't mention it's
default.



2) For:
       •   Valid-Until-Min (valid-until-min) and Valid-Until-Max
           (valid-until-max) can be used to raise or lower the time period in
           seconds in which the data from this repository is considered valid.

my understanding was the following:

The Release file has Date: and (possibly) Valid-Until: .
If I set Valid-Until-Max = 1 day, the regardless if what Valid-Until:
says in the release file, it would be valid at from the Release’s Date:
+ 1 day.

However, the description using the the terms raise/lower rather implies
that an existing value is raised/lowered, ... e.g. for the example
above, as if the Release file had a validity period of 1 week... it
would be 1 week + 1 day.

Similarly, the following is not clear, I guess:

If the Release file would say the validity period is effectively 1 day,
but Valid-Until-Max = 1 week,... which one wins? "-Max" kinda implies
it would be the maximum value, but a smaller Valid-Until would still be
enforced?


3) The EXAMPLES section seems to imply one can set multiple values in
Suites: (last example), but the "THE DEB AND DEB-SRC TYPES: GENERAL
FORMAT" seems to imply only one suite is possible:
>     Suites: suite
>     Components: [component1] [component2] [...]




Thanks,
Chris.