[Tickets #14486] Vacation over two mounth causes sieve script to crash

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Ticket URL: https://bugs.horde.org/ticket/14486
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  Ticket             | 14486
  Created By         | philipp.faeustlin at uni-hohenheim.de
  Summary            | Vacation over two mounth causes sieve script to crash
  Queue              | Ingo
  Version            | Git master
  Type               | Bug
  State              | Unconfirmed
  Priority           | 2. Medium
  Milestone          |
  Patch              |
  Owners             |
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philipp.faeustlin at uni-hohenheim.de (2016-10-06 15:11) wrote:

I think I found a bug, where the by ingo generated sieve script  
crashes with "error: duplicate vacation action not allowed"

I my case the user had the message for Sep 30 and Oct 1 activated,  
which generates following script part:
..................................................................
if header :regex "Received" "^.*(Sep) (\\(.*\\) )?.... (\\(.*\\)  
)?..:..:.. (\\(.*\\) )?((\\+|\\-)[[:digit:]]{4}|.{1,5})(\\(.*\\))?$" {
     if header :regex "Received" "^.*(30) (\\(.*\\) )?... (\\(.*\\)  
)?.... (\\(.*\\) )?..:..:.. (\\(.*\\)  
)?((\\+|\\-)[[:digit:]]{4}|.{1,5})( \\(.*\\))?$" {
     vacation :addresses ["..."] :subject "..." "...";
}
}
if header :regex "Received" "^.*(Oct) (\\(.*\\) )?.... (\\(.*\\)  
)?..:..:.. (\\(.*\\) )?((\\+|\\-)[[:digit:]]{4}|.{1,5})( \\(.*\\))?$" {
     if header :regex "Received" "^.*([0 ]1) (\\(.*\\) )?... (\\(.*\\)  
)?.... (\\(.*\\) )?..:..:.. (\\(.*\\)  
)?((\\+|\\-)[[:digit:]]{4}|.{1,5})( \\(.*\\))?$" {
     vacation :addresses ["..."] :subject "..." "...";
}
..................................................................

He received a message which contained following Received lines...

Received: ... Sat, 01 Oct 2016 03:26:19 +0200
Received: ... Fri, 30 Sep 2016 21:17:58 -0400

With such message all if clauses are true and the sieve script crashes  
at the second "vacation" action and the rest of the script isn't  
executed.

Solution:?
 From my point of view the solution for the problem is to use elseif  
(elif) for checking the the second, third, ... month of the vacation  
message.