dovecot - Feb 2019 - Use sieve to move all mail automatically based on List-Id

Dear all,

I currently use the following rule to automatically sort email into
folders based on mailing lists:

# split out the various list forms
# Mailman & other lists using list-id
if exists "list-id" {
??? if header :regex "list-id" "<([a-z_0-9-]+)[.@]" {
??????? set :lower "listname" "${1}";
??????? fileinto :create "${listname}";
??? } else {
??????? if header :regex "list-id"
"^\\s*<?([a-z_0-9-]+)[.@]" {
??????????? set :lower "listname" "${1}";
??????????? fileinto :create "${listname}";
??????? } else {
??????????? keep;
??????? }
??? }
??? stop;
}

This works really nice.
The only problem I have here is that it does use the ID, but not the
name and this can lead to strange folder names.
If an email has e.g. the following header:

List-Id: mfechner/ci-test <142.ci-test.mfechner.gitlab.fechner.net>

it moves the email to the folder 142 as the regex matches inside the <>
string till the none-letter/none-number/_/- is matching.
I do not understand the expresion [.@] so it is nearly impossible for my to
extend that query.

What I would like to do is using the ID as folder name as fallback.
So in this case I would like that the email is moved to folder
`mfechner/ci-test`.
I'm not sure if sieve can handle the `/` correctly.

Thanks a lot for any tip.

Gru?
Matthias

-- 

"Programming today is a race between software engineers striving to
build bigger and better idiot-proof programs, and the universe trying to
produce bigger and better idiots. So far, the universe is winning." --
Rich Cook

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