Assigning multiple labels (X-Label) to a message

[Kevin J. McCarthy]

On Wed, Dec 16, 2020 at 03:42:07PM +0100, Marcus C. Gottwald wrote:
>I have incoming email messages which get multiple labels assigned
>by "procmail" piping through "formail -A", adding an "X-Label"
>header line for each label.
>
>Mutt fetches those email messages via IMAP and appears to be
>looking at only the last X-Label header line when (a) formatting
>the index using the "%y" selector in "index_format" and
>(b) limiting using the "~y" pattern. (I'm using Mutt from current
>Debian stable, i.e. version 1.10.1.)

Mutt's label handling is pretty basic right now.  It expects only a 
single X-Label header in the email.  When editing the label, Mutt only 
knows how to write a single X-Label header back.

I know dgc had some other patches to improve the situation, but they 
haven't been merged yet.

>When using multiple labels in a single X-Label header line, are there 
>any advantages in using a specific delimiter (space, comma, ...)?

Currently not really.  The label completion has some code to delimit by 
":" or ",".  However, internally Mutt doesn't understand the multiple 
values, making the completion less then useful.

So, as of now you have to devise your own scheme and edit carefully.

-- 
Kevin J. McCarthy
GPG Fingerprint: 8975 A9B3 3AA3 7910 385C  5308 ADEF 7684 8031 6BDA
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