Problem with range matching.

[gmosx]

Hi!

First of all, thank you for this useful crate. I would like to report an issue:

The cron expression 0 0 15-21 3 5 should match a Friday in March that's between the days 15-21.

In other words it should match 15-21 AND 5, i.e. "3-15".

Instead it seems to match 15-21 OR 5, i.e. "3-1" "3-8" "3-15" "3-16" "3-17" "3-18" "3-19" "3-20" "3-21" "3-22" "3-29".

[Hexagon]

Hello! That's expected behavior of cron, but croner has an option for using OR instead of AND - https://github.com/Hexagon/croner-rust?tab=readme-ov-file#3-with_dom_and_dow . Does that work for you?

[Hexagon]

Background (from developing the javascript version of croner): Hexagon/croner#53

[gmosx]

Interesting, it worked, thank you!

[gmosx]

Closing this issue as my problem is resolved.

But, a thought: shouldn't .with_dom_and_dow() be the default?

[Hexagon]

Great!

OR is the default in most cron implementations, including the POSIX crontab specification

As an example of specifying the two types of days:

0 0 1,15 * 1

would run a command on the first and fifteenth of each month, as well as on every Monday. To specify days by only one field, the other field should be set to '*'; for example:

https://pubs.opengroup.org/onlinepubs/9799919799/utilities/crontab.html