Parsing a julian date fails when it's numeric and over 3 digits

[rrohwer]

When using parse_date_time(x = , orders = "j") it fails to parse if x is numeric and over 3 digits. It does parse correctly if x is numeric and 1 or 2 digits, and if x is character and 3 digits. Since the documentation says x can be numeric, I think this is a bug.

# these work:
parse_date_time(x = 1, orders = "j")
parse_date_time(x = 99, orders = "j")
parse_date_time(x = "100", orders = "j")

# this fails
parse_date_time(x = 100, orders = "j")
# [1] NA
# Warning message:
# All formats failed to parse. No formats found. 

Version notes from sessionInfo():
R version 4.1.0 (2021-05-18)
Platform: x86_64-apple-darwin17.0 (64-bit)
Running under: macOS Catalina 10.15.7

other attached packages:
[1] lubridate_1.8.0

Thanks for supporting this package, I rely on it! :)

[vspinu]

Thanks.

Parsing is designed for character inputs. It was failing because numeric inputs are normalized with a heuristic logic designed for full date-times.

[rrohwer]

Yes I assumed that based on the behavior, but FYI the documentation contradicts that character input is required.

Also, this makes it so the lubridate functions are not reversible. For example, you can parse a date to julian, but then the output is numeric and you can't directly parse it back to date.