Re: [Nmh-workers] multiple MIME-Version fields

[Paul Fox]

david wrote:
 > Paul F. wrote:
 > 
 > > i've recently started getting messages with multiple MIME-Version
 > > headers.  they all say "1.0", of course.
 > 
 > > i see nothing (just a quick read) in RFC 2045 regarding multiple
 > > MIME-Version headers.
 > 
 > The BNF shows exactly one, so I'd say the messages don't conform.

ah -- i only read the text.

 > Are they from more than one source?

i don't think so.  it's from a big forum site, so it's possible
that other forums running the same code would do it too....

...heh.  i just went to the site that publishes the forum code,
and did a search for "multiple mime version".  i didn't find a
bug report, as i was hoping, but i quickly found another problem
report which included sample notification mail sent from the forum
software.  sure enough it has multiple MIME-Version headers:
    
http://www.simplemachines.org/community/index.php?topic=425397.msg2982599#msg2982599
i'll sign up and see if i can report it there.

 > 
 > A quick web search shows that exmh could do that under some condition,
 > but that was over 15 years ago.
 > 
 > > the following patch accomplishes this:  all MIME-Version headers are
 > > checked, and all those that are acceptable ("1.0") are ignored
 > > silently.
 > 
 > Looks good to me.

okay.  i'll commit.

paul

 > 
 > > the patch makes it possible for other programs (mhfixmsg?  a future
 > > "mhverifymsg"?) to easily request the multiple header warning in the
 > > future.
 > 
 > Thanks for doing it that way.  I could see an mhfixmsg enhancement
 > to zap all but the first (after verifying the version numbers), but
 > it's not high on my priority list.
 > 
 > David
 > 
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=----------------------
 paul fox, address@hidden (arlington, ma, where it's 32.0 degrees)