[Tickets #10226] IMP 5.x broke compatibility with UW-IMAP

[bugs at horde.org]

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Ticket URL: http://bugs.horde.org/ticket/10226
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  Ticket             | 10226
  Created By         | rmerl at lostrealm.ca
  Summary            | IMP 5.x broke compatibility with UW-IMAP
  Queue              | IMP
  Version            | 5.0.6
  Type               | Bug
  State              | Unconfirmed
  Priority           | 3. High
  Milestone          |
  Patch              |
  Owners             |
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rmerl at lostrealm.ca (2011-06-10 18:19) wrote:

Since upgrading from IMP 4 to 5, IMP fails at properly displaying a  
list of messages for some of my users.  It will list one or two emails  
in the page, one of them saying Unknown date, Invalid Address, etc...   
DIMP will fail to build a list, simply saying there was an error.

Switching back to IMP 4.x works fine with the same mailbox, so this  
looks like a regression.

The Horde logged message:
2011-06-10T12:23:09-04:00 WARN: HORDE [imp] PHP ERROR: array_flip()  
[<a href='function.array-flip'>function.array-flip</a>]: Can onl
y flip STRING and INTEGER values! [pid 3184 on line 64 of  
"/usr/share/pear/Horde/Imap/Client/Utils.php"]

Note that some Emails might have French accents in their subject or  
body, in case that'd be the trigger.