When the user changes which addresses mu should consider 'personal',
mu's store should be reinitialized.
After this change, the activation script parses the previously
configured list of addresses and compares it with the new one. If they
differ, it runs the init command even when the store has already been
initialized.
This has no effect if the user does not have any aliases defined for
any accounts.
This will also only add `--my-address=` to only accounts that are
enabled to be tracked by mu.
mu-cfind is meant to search for contacts within your contacts database and the emails that you have sent/received. The use of the --personal flag in that command is meant to filter for only emails that use your email addresses (which are all the ones you specify with the ${myAddresses} variable. Disregard what I said in #1623 (comment).
--my-address=<my-email-address>
specifies that some e-mail addresses are 'my-address' (--my-address can be used multiple times).
This is used by mu cfind -- any e-mail address found in the address fields of a message which also
has <my-email-address> in one of its address fields is considered a personal e-mail address. This
allows you, for example, to filter out (mu cfind --personal) addresses which were merely seen in
mailing list messages.
To initialize the database with mu init, the ${myAddresses} is not required to be passed to successfully initialize the database, but it is heavily recommended to do so.
To see the difference, in a safe location, run mu init --maildir=<path>, then mu index. You'll notice that "personal addresses" returns <none>, although the database will still work. However, mu cfind --personal will fail (as the personal contacts don't exist). Then run mu init --maildir=<path> --my-address=<address>, then mu index. Then you'll be able to search for contacts using mu cfind --personal.
