Re: Simple (I hope) split question

[Katsumi Yamaoka <yamaoka@jpl.org>]

>>>>> In <87fyssesgc.fsf@lucien.dreaming> Björn Lindström wrote:

> I'm using an RSS to e-mail gateway that generates headers of the form

> X-Custom-Group: foo.bar

> I want these messages to be sent to the corresponding mail group.

> According to my best understanding of the manual, this split-fancy rule
> should do the trick:

> ("X-Custom-Group" ".*" "\\&")

> However, this rule makes Gnus move the messages to the empty string
> group. With nnml, this means writing the messages directly to files in
> the root of my nnml tree, which by the way seems to be a bug in itself,
> since there's no way to read those messages in Gnus.

> Anyway, how should I modify that split rule so that mails with that
> header are moved to the corresponding mail group?

Does the following rule work?

("X-Custom-Group" "[\t ]\\([^\t\n ]+\\)" "\\1")

There should be one or more spaces or tabs between the header
and the group name, the group name should not contain whitespace,
furthermore the `nnmail-split-fancy-match-partial-words'
variable should be set to t (note that changing the value of
that variable affects the behavior of the other splitting rules).