Fri, 10 Apr 2026 17:02:29 +0000 https://bugs.horde.org/ticket/6424 Possible bug in lib/Horde/MIME/Structure.php I noticed that we have problem with mails without content-type headers and 8bit characters. I know that these are not allowed in standards. We have configured horde/imp to force to use iso-8859-1 for mails without charset. (with default_msg_charset in imp/config/prefs.php.) Even with default charset, mails without charset doesn't show accent chars right. I notised that our imap server gives those mails charset as 'US-ASCII' and horde checks charset as 'us-acii' (lowercase), and does not set it to default charser. I changes test to 'US-ASCII', and broken mails shows ok now. So i think that test should uppercase charset first, and then compare. Here is patch for that: --- ../horde-webmail-1.0.1/lib/Horde/MIME/Structure.php 2007-03-16 21:24:26.000000000 +0200 +++ lib/Horde/MIME/Structure.php 2008-03-11 14:33:48.000000000 +0200 @@ -161,7 +161,7 @@ /* Set the default character set. */ if (($ob->getPrimaryType() == 'text') && - ($ob->getCharset() == 'us-ascii') && + (String::upper($ob->getCharset()) == 'US-ASCII') && isset($GLOBALS['mime_structure']['default_charset'])) { $ob->setCharset($GLOBALS['mime_structure']['default_charset']); } Tue, 11 Mar 2008 12:39:33 +0000 https://bugs.horde.org/ticket/6424#t43703 Nice catch, and thanks for the detailed analysis. That's what a call a good bug report! Fixed in CVS (for HGW 1.1). Tue, 11 Mar 2008 16:14:02 +0000 https://bugs.horde.org/ticket/6424#t43713