On 15 Jun 2015, at 21:22, Felix Zielcke <fziel...@z-51.de> wrote: > > Hi, > > I'm currently looking over the FTS pages to enable it in my dovecot. > But I'm unsure what the best settings of the lucene plugin are, if you > receive german and english mails. > Wiki says: > > textcat_conf=<path> textcat_dir=<path>: If specified, enable guessing > the stemming language for emails and search keywords. This is a little > bit problematic in practice, since indexing and searching languages may > differ and may not find even exact words because they stem differently. > > On Debian libstemmer is included in the debian-lucene package. > > So what settings are the best to have not the problem that exact words > can't be found?
The textcat support in fts-lucene works very badly and shouldn't be used. There's new lib-fts code being developed that supports multiple languages better. It's already kind of usable in v2.2.18, but would be better to wait for v2.2.19.
