weird paths in notmuch database

[Davide Mancusi]

2015-11-06 14:09 GMT+01:00 David Bremner <david at tethera.net>:
>> $ notmuch search --output=files 'path:/home/**'
>> /export/home/username/mail//home/username/local/mail/archive/cur/1446805732.2711_9.hostname:2,S
>> /export/home/username/mail/archive/cur/1446805732.2711_9.hostname:2,S
[...]
>
>    The directory must be specified relative to the top-level maildir
>    (and without the leading slash).
>
> Please try with correct search syntax in order to narrow down the
> problem.

The unusual search was just to illustrate the problem. I get the paths
even with tag searches, like so:

$ notmuch search --output=files
'id:20151106102835.GA2711 at hostname.domain.com'
/export/home/username/mail//home/username/local/mail/archive/cur/1446805732.2711_9.hostname:2,S
/export/home/username/mail/archive/cur/1446805732.2711_9.hostname:2,S