Re: nnml-split-fancy problems

[Kai.Grossjohann@CS.Uni-Dortmund.DE (Kai Großjohann)]

Arcady Genkin <a.genkin@utoronto.ca> writes:

> I'm sorry, I'm not sure I understand that "From" bit of your reply. Do you
> mean that the header "X-From-Line:" appears in the message after it
> passes thru gnus's backend?

Often, messages are stored in mbox format: each message begins with a
line starting with "From " (note the space) and ends with an empty
line.  The From_ line (as it is also called) is not a header since it
does not start with "From:" (note the colon).  After the From_ line
come the headers of the message, then an empty line, then the body,
and finally the terminating empty line.

In the nnml backend, each file contains one message, and the message
consists of headers, an empty line, and the body.  Note that nnml
format does not allow for the From_ line, only for headers.
Therefore, Gnus (maybe the nnml backend) rewrites the From_ line into
an X-From-Line header (with colon).

I think the rewriting happens after splitting.  Therefore, the
splitting process does not see the X-From-Line header.  And you can't
split on the From_ line since it is not a header.

kai
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