Timer reference to 'now' not reset on delete

[ddelger]

In the internal loop of the run method the local variable now is updated when a new entry is added but not deleted.

https://github.com/robfig/cron/blob/v3/cron.go#L280

This results in the timer getting reset based an on outdated reference to now. Causing the trigger to later than specified.

https://github.com/robfig/cron/blob/v3/cron.go#L244

[robfig]

Thank you for the bug report! I agree that looks incorrect. I'll work on adding a test to catch it and then fix the bug.

[robfig]

I was able to reproduce and fix the bug. Thank you!

[ddelger]

Great thanks!

I also just noticed a pr to add update functionality. I would imagine the same issue would occur here as well.

https://github.com/robfig/cron/pull/183/files