[Tickets #14359] Specific entries in recurrent event serie cannot be deleted

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Ticket URL: https://bugs.horde.org/ticket/14359
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  Ticket             | 14359
  Created By         | albert.solana at upcnet.es
  Summary            | Specific entries in recurrent event serie cannot be
                     | deleted
  Queue              | Kronolith
  Version            | 4.2.11
  Type               | Bug
  State              | Unconfirmed
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
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albert.solana at upcnet.es (2016-05-09 21:59) wrote:

My server is configured with Kronolith 4.2.11 and  Horde 5.2.8.

I've noticed problems in Horde webmail when I try to delete specific  
entries in a recurrent event serie.

For instance I created a recurrent event serie (10 saturdays) with two  
attendees.

I can delete an specific event and notify all attendees.
Attendees receive e-mail notification and can update their calendars  
where this event is removed.

But if I try to delete another specific event  and notify all  
attendees then this one is not removed from my calendar, the attendees  
receives the e-mail notification but when they accept the event is not  
removed from their calendars. No red error message pop-up appears in  
all of those actions.

Sometimes I've noticed that after logout and login I can delete this  
specific event and attendees receives notification and they can delete  
it, but next attempts usually fail and sometimes logout/login "trick"  
neither works.

I've noticed that removing an especific entry from recurring event   
from Thunderbird 3.8.7.2 Lighning 4.0.5.2 always seems to work fine:  
It's deleted automatically from my calendar and attendees receives  
email notification and can delete it without problems. I've noticed  
that it removes the events which deletion failed before in Horde  
website, the ics file contains all exceptions (specific event deletes):

- Example 1, notification sent by Thunderbird:
UserA  wants to notify you about changes in "repetida setmanal ds".
Start: 	14/05/16 0:00
End: 	14/05/16 0:59
Summary: 	repetida setmanal ds
Recurrence: 	Weekly: Recurs every 1 week(s) on: Saturday
Ends after: 10 times
Exceptions on: 18/06/16 06/11/16 28/05/16 14/05/16 25/06/16 07/02/16 02/07/16

If I compare with what is notified from Kronolith in Horde webmail I just see:

- Example 2, delete 25/06/16  ics file generated:
albert.solana has cancelled an instance of the recurring "repetida  
setmanal ds".
Start: 	25/06/16 0:00
End: 	25/06/16 0:59
Summary: 	repetida setmanal ds
Recurrence: 	Weekly: Recurs every 1 week(s) on: Saturday
Ends after: 10 times
Attendees:
Name 	Role 	Status
Usuari Elena2 	Required Participant 	Awaiting Response
albert.solana at upcnet.es 	Required Participant 	Awaiting Response
Usuari Ana 	Required Participant 	Awaiting Response
Exceptions:
Start: 	25/06/16 0:00
End: 	25/06/16 1:00
Summary: 	repetida setmanal ds


- Example 3, detele 07/02/16 ics file generated:

albert.solana has cancelled an instance of the recurring "repetida  
setmanal ds".
Start: 	 0:07/02/1600
End: 	07/02/16 0:59
Summary: 	repetida setmanal ds
Recurrence: 	Weekly: Recurs every 1 week(s) on: Saturday
Ends after: 10 times


I've upload a zip file with these 3 ics file examples.




albert.solana at upcnet.es (2016-05-09 21:59) uploaded: 20160509.ics.examples.zip

https://bugs.horde.org/horde/services/download/?app=whups&actionID=download_file&file=20160509.ics.examples.zip&ticket=14359&fn=%2F20160509.ics.examples.zip