gnus: Sieve Commands
2.18.5 Sieve Commands
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Sieve is a server-side mail filtering language. In Gnus you can use the
‘sieve’ group parameter (Group Parameters) to specify sieve
rules that should apply to each group. Gnus provides two commands to
translate all these group parameters into a proper Sieve script that can
be transferred to the server somehow.
The generated Sieve script is placed in ‘gnus-sieve-file’ (by default
‘~/.sieve’). The Sieve code that Gnus generate is placed between two
delimiters, ‘gnus-sieve-region-start’ and ‘gnus-sieve-region-end’, so
you may write additional Sieve code outside these delimiters that will
not be removed the next time you regenerate the Sieve script.
The variable ‘gnus-sieve-crosspost’ controls how the Sieve script is
generated. If it is non-‘nil’ (the default) articles is placed in all
groups that have matching rules, otherwise the article is only placed in
the group with the first matching rule. For example, the group
parameter ‘(sieve address "sender" "owner-ding@hpc.uh.edu")’ will
generate the following piece of Sieve code if ‘gnus-sieve-crosspost’ is
‘nil’. (When ‘gnus-sieve-crosspost’ is non-‘nil’, it looks the same
except that the line containing the call to ‘stop’ is removed.)
if address "sender" "owner-ding@hpc.uh.edu" {
fileinto "INBOX.ding";
stop;
}
Emacs Sieve (sieve)Top.
‘D g’
Regenerate a Sieve script from the ‘sieve’ group parameters and put
you into the ‘gnus-sieve-file’ without saving it.
‘D u’
Regenerates the Gnus managed part of ‘gnus-sieve-file’ using the
‘sieve’ group parameters, save the file and upload it to the server
using the ‘sieveshell’ program.