In "--from a --to z", a is included in the range, z not. This is
non-intuitive and disagrees with the semantics of "to" in filter options
like --filter-start-to, where "to" (and "from") are used inclusively (as
opposed to "before" and "after"). It also has the effect that "--from
today --to tomorrow" has a range of 1 day, "--to z" a range of 0 days
(otherwise not allowed), and "--to today --days -1" is allowed and
displays yesterday!
The implementation has been fixed to agree with "inclusive" semantics.
Options --from and -days with negative range are allowed, while --to and
--days are disallowed also when the range is negative.
Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
03880a82bf