date: does not respect width/padding character in output format string

[jfinkels]

Steps to reproduce:

date -d "1999-12-08" +%03d

What happens now: uutils date terminates with an error message:

date: invalid format %03d

What I expected to happen: GNU date prints the day number with a width of three padded by zeros:

008

Notes: this is causing a failure in GNU test file tests/date/date.pl. This is not specific to %d:

$ date -d "1999-12-08" +%05y
00099
$ date -d "1999-12-08" +%05a
00Wed

[BigPapa314]

Seams that the format strings are processed by chrono so it might seam to have to be fixed there.

[BigPapa314]

Opened an issue: #1663