185481 - Character encoding not working after displaying attachment with plugin

Status: VERIFIED DUPLICATE of bug 110729

(SeaMonkey :: MailNews: Message Display, defect)

Description

[Hans Maurer]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.2.1) Gecko/20021130
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de-AT; rv:1.2.1) Gecko/20021130

Most of the emails I receive use the charset ISO-8859-1, and several
include 8bit characters (typically German umlauts).  Usually, these
are displayed correctly in the Mozilla's mail reader.

However, opening an attachments that's handled by a plugin (as opposed
to an external application) breaks the character encoding.  This can't be
corrected other than by re-starting the mail application.

E.g., I've installed Acrobat Reader as Mozilla plugin.  When I open a
PDF attachment, Mozilla Mail replaces the mail text with the Acrobat
plugin that displays the attached document.  When changing back to
a text view (by selecting another mail or a text attachment), the umlauts
(and other special characters) in that mail are no longer displayed
correctly.  Instead of each umlaut, a sequence of two special characters
is displayed.  This effect can't be reverted, i.e. the only way to
permanently get back the umlauts is re-starting the mail reader.

When changing the display character encoding for such a mail to UTF-8,
the umlauts can be read again.  However, after switching to a different
mail and back (and thereby restoring the original charset), the umlauts
are broken again.

The mail (view source) contains 8bit umlaut characters in ISO-8859-1
charset.  It seems, that Mozilla Mail is converting them to UTF-8 (for
internal operation, I guess), but never converts them back for display.

The same effect appears with other plugins and also in windows that
were opened for a specific mail (by double-click).


Reproducible: Always

Steps to Reproduce:
1. Install Acrobat plugin, prepare mailbox with mails with umlauts and PDF
attachments
2. Open a mail, then open it's attachment (so that the plugin replaces the text
window)
3. Switch to another mail with umlauts (so that the text area is restored)

Actual Results:  
8bit characters are no longer presented correctly, but (I suppose) in UTF-8.

Expected Results:  
Mozilla should display the characters correctly, i.e. the same way it did, before
the plugins temporarily replaced the text area.


This bug's been there in previous versions, i.e. I had the same problem with
1.0, 1.0.1 and 1.1.

Comment 1

[Matthias Versen [:Matti]]

Please only repport bugs if you use the latest milestone (there is a big note in
the bug report page : "2 weeks old build").



*** This bug has been marked as a duplicate of 110729 ***

Comment 2

[Kai Lahmann (is there, where MNG is)]

v