508946 - SeaMonkey 2.1(Gecko 1.9.2) Mail&News ignores charset of Content-Type: header and uses charset of <meta HTTP-EQUIV="Content-Type" ...> in HTML mail body, when View/Message Body As/Original HTML

Status: VERIFIED FIXED

(SeaMonkey :: MailNews: Message Display, defect)

Description

[WADA:World Anti-bad-Duping Agency]

Attachment: Mail folder file (3 HTML mails written in UTF-8, with dfifferent charser in <meta>)

+++ This bug was initially created as a clone of Bug #505072 +++
This bug is spin-off of "mail in mail folder" case in Bug #505072.

Build Identifier:
> Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2a1pre) Gecko/20090806 SeaMonkey/2.1a1pre

SeaMonkey 2.1(Gecko 1.9.2) Mail&News ignores charset of Content-Type: header and uses charset of <meta HTTP-EQUIV="Content-Type" ...> in HTML mail body, when View/Message Body As/Original HTML.
So, if incorrect charset is written in <meta> tag, display of HTML mail is garbled, even when correct charset is specified in Content-Type: header.

It's "Original HTML" only issue. No problem with "Simple HTML" & "Plain Text".
It's Sm 2.1x(1.9.2) only problem. No problem with Sm 2.0x(1.9.1).
Sm 2.0x(1.9.1) uses charset in Content-Type: header properly.

Note:
This kind of mail is probably generated by software such as archiver at mail server.
  (1) Mail server converts character encoding of mail (to utf-8 in many case)
  (2) Changes charset parameter in Content-Type: header properly.
  (3) Don't change charset in <meta HTTP-EQUIV="Content-Type" ...>
By google search, some bug reports for problem (3) of archiver can be seen.

Comment 1

[WADA:World Anti-bad-Duping Agency]

If <meta> tag is removed, problem doesn't occur.
As I wrote Bug 513249 Comment #8, 7/12 build is first build of Sm 2.1. 
> Build identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.9.2a1pre) Gecko/20090712 SeaMonkey/2.1a1pre
This bug's problem occurs with the first Sm 2.1 build.

This bug is special case of Bug 513249 on utf-8 mail.
               mail written in    charset in <meta>
  Bug 513249   non utf-8          correct charset (so, non utf-8 is set) 
  This bug     utf-8              wrong charset   (so, non utf-8 is set)

Comment 2

[WADA:World Anti-bad-Duping Agency]

Patch for Bug 505072 is landed. Checked with next builds.
> Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.3a1pre) Gecko/20091118 Shredder/3.1a1pre
> Build identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.9.3a1pre) Gecko/20091118 SeaMonkey/2.1a1pre
Problem could't be reprocuced with these builds.
Fixed/Verified.