On Thu, Nov 11, 2010 at 12:18:52AM -0600, David Champion wrote: > * On 10 Nov 2010, Will Fiveash wrote: > > I've received a message from an iPhone that has a MIME structure as > > follows: > > > > 1 <no description> [multipa/alternativ, 7bit, 48K] > > Mutt's attachment counter does not recurse through multipart/alternative > MIME parts. See parse.c:1556. I checked the latest version of this > patch that I made before it was mainlined 5 years ago. While several > things were simplified to get that patch upstream, it has the same logic > for multipart/alternative. I'm afraid I don't remember for sure why I > made this choice, but it's probably because there's no objective basis > for deciding which alternative in a multipart/alternative should be > analyzed. Counting attachments among all available alternatives is > almost certainly not what a user wants. > > In principle the attachment counter could follow display rules and > choose the "preferred" alternative based upon alternative_order, > etc. This crosses an imaginary boundary between describing the > absolute structure of the message and making subjective decisions > about interpretation, but there's nothing logically incorrect about > it. However there could be unwated computational expense in that > approach. In 2005 at least there was pretty serious concern about the > computational cost of counting attachments at all, so in order to get > the code upsteam I took all possible steps to minimize that.
Perhaps there could be a mutt MIME parsing recursion level option that could be set to restrict the levels of multipart attachments that are parsed if this is an issue for people? Of course I have no experience as to whether allowing recursive parsing is too much of a performance hit to be usable but in my case it may not be too bad since I'm reading mail from mbox files that are updated via fetchmail(from IMAP server)->procmail->mbox files. -- Will Fiveash Oracle Austin, TX, USA Internal Solaris Kerberos/GSS/SASL website: http://kerberos.sfbay.sun.com http://opensolaris.org/os/project/kerberos/
