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Fix recurrence rule expansion with ordered weekday
When the order of a weekday in BYDAY rule expansion (like -5SA or 5SU
for monthly or 55WE for yearly) exceeds the number of available weekdays
in the period (month or year), rule expansion with negative order could
result in a floating point exception. The reason: the modified frequency
might become zero.
Solution. Check order against number of available weekdays and terminate
expansion early whenever possible (also for positive orders).
Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk>
Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
Diffstat (limited to '%2525252525253fid%2525252525253dbd238bfd7c443fd974f5b7edd6c1abc0349bfa78%25252525253fid%25252525253dbd238bfd7c443fd974f5b7edd6c1abc0349bfa78%252525253fid%252525253dbd238bfd7c443fd974f5b7edd6c1abc0349bfa78%2525253fid%2525253dbd238bfd7c443fd974f5b7edd6c1abc0349bfa78&id2%2525253dfabacecd16eb62ff94dfa8955862852a410e3524%25253fid%25253dbd238bfd7c443fd974f5b7edd6c1abc0349bfa78&id2%25253dfabacecd16eb62ff94dfa8955862852a410e3524%253fid%253dbd238bfd7c443fd974f5b7edd6c1abc0349bfa78%3fid%3dbd238bfd7c443fd974f5b7edd6c1abc0349bfa78&id2%3dfabacecd16eb62ff94dfa8955862852a410e3524?id=bd238bfd7c443fd974f5b7edd6c1abc0349bfa78')
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