gropdf (1.23.0): incorrect CreationDate/ModDate

[Christof Meerwald]

There appear to be two bugs in how gropdf (from 1.23.0) writes the
CreationDate/ModDate. To demonstrate I am running

  while sleep 60; do date; echo "" |
    groff -Z -Tpdf | gropdf | fgrep -a Date; done

which results in the following output:

Thu  4 Apr 23:30:55 CEST 2024
5 0 obj << /CreationDate (D:20240404233056+01'+00')
/ModDate (D:20240404233056+01'+00')
Thu  4 Apr 23:31:56 CEST 2024
5 0 obj << /CreationDate (D:20240404233156+01'+00')
/ModDate (D:20240404233156+01'+00')
Thu  4 Apr 23:32:56 CEST 2024
5 0 obj << /CreationDate (D:20240404233256+02'+00')
/ModDate (D:20240404233256+02'+00')
Thu  4 Apr 23:33:56 CEST 2024
5 0 obj << /CreationDate (D:20240404233357+02'+00')
/ModDate (D:20240404233357+02'+00')

I don't think there should be a "+" sign in the last component of the
dates, it should probably be

  D:20240404233357+02'00'

instead of

  D:20240404233357+02'+00'


And I am pretty sure we didn't just switch to summer time at around
23:32 here.

gropdf 1.22.4 doesn't appear to have these bugs.


Christof

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