Brian May <brian@linuxpenguins.xyz> writes:

> David Bremner <david@tethera.net> writes:
>
>> This is a design-choice/quirk of the Xapian query parser, discussed
>> under "Operators" in man notmuch-search-terms; terms with a common
>> prefix are implicitely combined with an OR.
>> I don't think that documentation has changed since 0.23, but you can
>> compare with https://notmuchmail.org/manpages/notmuch-search-terms-7/
>
> Ok, now I understand that text. Thanks. I tried using "tag:important and
> tag:unread" yesterday, and it didn't work either.
>
> Today I am wondering if maybe I had threads that had some messages
> marked important and some marked unread, but no individual messages
> marked both unread and important. Oh well, maybe this was the real
> reason I was having problems.

You can test that theory with

% notmuch search --output=messages tag:important and tag:unread

There is a patch floating around [1] to support

% notmuch search thread:{tag:important} and thread:{tag:unread}

if that's the query you actually want.


[1] http://mid.mail-archive.com/20171226010305.26579-1-david@tethera.net
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