[PATCH] Better tagging.

[michael at optusnet.com.au]

michael at optusnet.com.au writes:
[..]
> 2) Keep the header-name from the various id headers. 'Resent-Message-ID'
> is actually a powerful discriminator for example.
> 
> $ echo h:Resent-Message-ID | bogoutil  -W -p ./d/a0
>                        spam    good  Gra prob  Rob/Fis
> h:Resent-Message-ID       1     500  0.002132  0.143563
> 

Just to follow up to myself:

Exact from a slice with the patch. These are all
tokens that bogofilter currently ignores.
Note that a number of these are quite significant.

                       spam    good  Gra prob  Rob/Fis
h:Mime-version: 1.0      11     278  0.040559  0.218034
h:MIME-version: 1.0      59     418  0.131039  0.230938
h:MIME-Version: 1.0 (WebTV)      0      12  0.000000  0.396764
h:MIME-Version:  1.0      0       7  0.000000  0.404164
h:MIME-VERSION: 1.0       0       1  0.400000  0.413417
h:Mime-VersioN: 1.0       0       1  0.400000  0.413417
h:Mime-version:   1.0      0       1  0.400000  0.413417
h:mime-version: 1.0       1       2  0.400000  0.414224
h:MIME-Version: 1.0   14515   18032  0.462366  0.462000
h:MiME-Version: 1.0      26       0  1.000000  0.471256
h:MIME-Version: : 1.0     17       0  1.000000  0.453050
h:Mime-Version: 1.0    4777    3408  0.599608  0.594114

h:Content-Type: Text/Plain      4     382  0.011063  0.173973
h:Content-type: text/plain    852    2857  0.241624  0.252860
h:Content-Type: TEXT/PLAIN      0     100  0.000000  0.300067
h:content-type: text/plain      0      24  0.000000  0.380062
h:Content-type: Text/Plain      1      18  0.056029  0.390567
h:Content-Type: Text/plain      0      11  0.000000  0.398222
h:Content-Type: text/plain   9990   15845  0.402484  0.402606
h:Content-Type:  text/plain      4       6  0.415974  0.415037
h:Content-Type:         text/plain      1       1  0.400000  0.415798
h:Content-Type: TEXT/plain     10       4  0.727591  0.431645

h:Content-disposition: inline      3      57  0.053237  0.347210
h:Content-Disposition: Inline      3      19  0.144342  0.393785
h:Content-Disposition:  inline      0       6  0.000000  0.405677
h:Content-Disposition: inline   3526    1335  0.738343  0.722603