Re: multipart/alternative question
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On Wednesday, July 15 at 11:59 PM, quoth lee:
>> You can also use the %X sequence in your index_format definition to
>> display the number of attachments in a message. However, I don't
>> think either of those methods pick up on inline attachments.
>
> Hm, I would expect that attachments are attachments and count as
> such ...
The definition of "attachment" is not as clear as you would think. For
example, we tend to think of MIME components whose type is text/* as
not being "attachments", but sometimes they can be (e.g. if I sent you
a txt file). The same problem exists with pictures in GUI mailers:
they can display the picture, or treat it as a file, or both. This is
what RFC 2813 (the Content-Disposition header) is designed to help
with. And when multipart/alternative is involved... it gets nutty.
> I 1 <no description> [multipa/alternativ, 7bit, 2.0K]
> I 2 ><no description> [text/plain, quoted, iso-8859-1, 0.7K]
> I 3 ><no description> [text/html, quoted, iso-8859-1, 1.0K]
> I 4 <no description> [text/plain, 7bit, us-ascii, 0.2K]
>
>
> For that one, %X says the mail has 1 (one) attachment. But apparently
> it has 4 attachments, so what's %X for?
Here's a wacky message structure my mom sent me (using Apple Mail):
I 1 <no description> [multipa/alterna, 7bit, 653K]
I 2 |-><no description> [text/plain, utf-8, 2.0K]
I 3 `-><no description> [multipa/mixed, 7bit, 651K]
I 4 |-><no description> [text/html, quoted, windows-1252, 3.0K]
I 5 |->Typeface Ideas.pdf [applica/pdf ...]
I 6 `-><no description> [text/html, 7bit, us-ascii, 0.2K]
I haven't set up attachment detection properly, so %X says this
message has 0 attachments.
Details of how this works and why it's hard are here:
http://www.mutt.org/doc/devel/manual.html#attachments
> If you can find out if what they are doing is compliant with RFCs or
> not, you could act accordingly. Unfortunately that's a difficult
> task, but if they are compliant, you need to change something on
> your side.
It *is* (or at least, can be) compliant.
~Kyle
- --
Arguing with an engineer is like wrestling with a pig in mud, after a
while you realize the pig is enjoying it.
-- Unknown
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