Unable to search for emails with content with a given MIME type

[Suvayu Ali]

Hi,

On Tue, Jan 27, 2015 at 08:01:31PM -0600, Todd wrote:
> 
> The feature you wanted was committed a few days ago (searching with a
> "mimetype:" prefix).  Searching for "mimetype:calendar" would get any
> "text/calendar" or "ics/calendar" attachments.

I am using notmuch from HEAD, but I do not get any results with
mimetype:<word>.  Is this only available for new emails?  If so, how do
I enable, searching with mimetype: for old emails?

Thanks,

-- 
Suvayu

Open source is the future. It sets us free.