Strange behavior with subtract_time() %-time%

[spsanderson]

I think the output below says it all:

> "2022-08-30" %-time% "16 months"
[1] "2021-04-30"
> "2022-08-30" %-time% "17 months"
[1] "2021-03-30"
> "2022-08-30" %-time% "18 months"
[1] NA
Warning message:
In time_subtracter(index, period) :
  Missing values created during time subtraction. This can happen if dates do not exist.
> "2022-08-30" %-time% "24 months"
[1] "2020-08-30"
> "2022-08-30" %-time% "19 months"
[1] "2021-01-30"
> "2022-08-30" %-time% "18 months"
[1] NA

Just started happening today...

[mdancho84]

The problem is February 30 does not exist so needs to be Feb 29.

Was this behavior different before?

[spsanderson]

I never seemed to have the issue before this is the first time I have ever run into it.