I am looking for information on
tracker, and generally speaking I find it very scarce.
is there any reference describing the possible configuration to set what
I found here the following configuration options, but I don't know how/where to use them
-- enable-writeback false -- index-optical-discs false -- index-on-battery false -- index-removable-devices false -- ignored-directories ['core-dumps', 'CVS', 'lost+found', 'po', 'vendor'] -- ignore-stop-words true -- ignore-numbers true -- max-words-to-index 1000 -- removable-days-threshold 3 ? (I don't not understand this)
From The tracker FAQ:
How can I control what Tracker indexes?
In GNOME, you can use the Search Settings panel to control what Tracker indexes. See GNOME's documentation.
You can control Tracker's configuration directly using dconf-editor or the gsettings CLI tool. The relevant schemas are org.freedesktop.Tracker.Miner.Files and org.freedesktop.Tracker.Extract.
So I go to... GNOME's documentation:
Customize files search only describes how to control which files are indexed, not what is indexed.