[Tickets #2134] NEW: \'s are over-escaped in sieve's regex mode

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Ticket URL: http://bugs.horde.org/ticket/?id=2134
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 Ticket             | 2134
 Created By         | sky at columbia.edu
 Summary            | \'s are over-escaped in sieve's regex mode
 Queue              | Ingo
 Version            | HEAD
 State              | Unconfirmed
 Priority           | 1. Low
 Type               | Bug
 Owners             | 
+New Attachment     | sieve.php.patch
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sky at columbia.edu (2005-06-14 08:50) wrote:

With the 'Regular Expression' match type, .'s need to be escaped so they are
not matched as a wildcard, but "\." is parsed by sieve.php to "\\." adding a
backslash.

It seems like, in general, \'s shouldn't be escaped for regex parsing.  The
attached patch, makes an exception when match-type is regex in the sieve
driver.