a parting of ways [was: patch #4 - mdebug]

Matt,

Thanks for writing.  After spending several days working with eps and 
finding the going rather rough, I followed the lead of one of my bogofilter 
co-developers and fleshed out the mime processing framework he had 
started.  The process reached a usable state several days ago, though 
details are still being worked out.

One of the big differences is that multiple copies of the message do not 
need to be kept in memory.  One copy is needed so that bogofilter can 
output the message with an added "X-Bogosity" header line.  The mime 
processing and decoding can proceed "on the fly" as decoded outputs are 
only needed for building wordlists for classifying the 
message.  Additionally, some chunks can simply be discarded, for example 
attachments (since they don't appear in the "readable" portion of the message).

Lastly, some of the typedef work I did on eps needs to be revised.  Having 
separate typedefs con_t, enc_t, dis_t, etc, but using the same values 
(0,1,2,3,etc) doesn't work because the function that returns the values 
doesn't distinguish which type is being returned.  This leads to confusion 
later on since values like CON_MULTI and ENC_BASE64 (both numerically "2") 
can get confused.  The solution is to have the enumerated symbols take on 
different value sets.  For example, CON_xxx at 10,11,12 and ENC_xxx at 
20,21,22,..., and DIS_xxx at 30,31,... works.

Best wishes on the future of eps.

Sincerely,

David Relson