Issue in 2.3.18 with fts_header_excludes/includes

Hi,

I'm still doing some test with fts-flatcurve, after updating to 2.3.18 I enabled:

fts_header_excludes = * fts_header_includes = From To Cc Bcc Subject Message-ID

but when I try to re-index all messages with FTS flatcurve the fts-flatcurve/ folder inside the Maildir/ become huge.

Taking for example a Maildir with cur folder of 1.1G the related fts-flatcurve folder passed from 140M to 2.2G.

After remove fts_header_excludes/includes config options, and re-index all messages, the fts-flatcurve/ size return to normal size.

Is an issue?

Thanks

-- Alessio Cecchi Postmaster @http://www.qboxmail.it https://www.linkedin.com/in/alessice