Date::Manip::Changes6 - backward incompatible changes in Date::Manip 6.xx
This describes all backwards incompatible changes made to the Date::Manip module starting at version 6.00.
For the most part, Date::Manip has remained backward compatible at every release, but occasionally, a change is made which is backward incompatible. These are documented here. Major changes are marked with asterisks.
In all operations involving time zones, the time zone must be determined. By default, it would take all of the information available (date, ISDST, etc.) and determine the most likely time zone. It would take every time zone that matched each piece of information, starting with those that matched in a standard time followed by those that matched in a daylight saving time.
When zones are specified by an offset, a standard time would always match since there are standard time zones that match all year long (the military time zones A-Z and the standard time zones of the form Etc/GMT+01). As a result, a daylight saving time match would never occur.
Since (if the date falls during a daylight saving time period) you usually want to use a time zone that has that offset in daylight saving time, the default is now to check daylight saving time zones first, followed by standard times.
See the Date::Manip::TZ manual (under the zone method) for more information.
In Date::Manip 5.xx, the %z format in UnixDate printed the offset in the form -0500. In 6.00, I changed that to -05:00:00, but this broke RFC 822 compliance.
I've changed %z back to -0500, and introduced a new format (%N) which returns -05:00:00.
Incidentally, this is the LAST unused letter, so I am now going to have to either stop adding formats, or add some extended format syntax. Not sure yet which, but this may involve a backwards incompatible change in the future.
Please refer to the Date::Manip::Problems documentation for information on submitting bug reports or questions to the author.
Date::Manip - main module documentation
This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
Sullivan Beck (sbeck@cpan.org)
To install Date::Manip, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Date::Manip
CPAN shell
perl -MCPAN -e shell install Date::Manip
For more information on module installation, please visit the detailed CPAN module installation guide.