The source project of this merge request has been removed.
gdatetime: Fix formatting of time zones offsets in range -01:00 to +00:00
Formatting code for %z
specifier incorrectly assumed that sign of
offset from UTC can be recovered from the number of hours alone, which
is not true for offsets between -01:00 and +00:00.
Extract and format sign separately to avoid the problem.
Issue #1337 (closed).