[Bug #2557] Escaping of '@' corrupts ISO-2022-JP text

2003-02-14 12:09:26
=================== BUG #2557: FULL BUG SNAPSHOT ===================

Submitted by: ehood                   Project: MHonArc                      
Submitted on: 2003-Feb-14 13:09
Category:  None                       Severity:  7                          
Bug Group:  Incorrect Behavior        Resolution:  None                     
Assigned to:  ehood                   Status:  Open                         
Platform Version:  All                Perl Version:  All                    
Component Version:  2.6.0             Fixed Release:                        

Summary:  Escaping of '@' corrupts ISO-2022-JP text

Original Submission:  v2.6.0 add the blanket conversion of the '@' character
to ( entity reference in an attempt to provide a simple
form of a default obfsucation for email address in messages.
However, this corrupts ISO-2022-JP based archives since
'@' is used in encoding escape sequences.

The following is copied from a post from Takashi P.KATOH:

| Subject: =?iso-2022-jp?B?GyRCQCQzJhsoQg==?=

should be decoded as

| ^[ $ B @ $ 3 & ^[ ( B         # SE-KAI, means WORLD
       ^^^ ^^^
       SE  KAI

but v2.6.0 converts this as

| ^[ $ B @ $ 3 & ^[ ( B    # BROKEN!

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