Tickets :: Comment on [#8286] Moving folders containing umlauts may cause misencoded folder names

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Comment	> The culprit seems to be dimp/imp.php:253 which calls > String::convertCharset() from lib/Horde/String.php everytime a Folder > is renamed: > > > > $new = String::convertCharset($new, NLS::getCharset(), 'UTF7-IMAP'); > > > > RFC 2060 at 5.1.3 says: > > 'The character "&" (0x26) is represented by the two-octet sequence "&-".' > > > > So the problem appears to be that an already encoded folder gets > encoded again as the escape sequence contains a character ("&") which > itself is encoded again the next time you run the encode function on > it, which explains why it turns the starting character of an encoded > folder sequence (like "test&APY-" into "test&-APY-") and after that > happened, the folder is broken.
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