[Tracker] thumbnails location

[mike <mhardy_mail yahoo com>]

I just wanted to say I like tracker because it's small
and does a good job - thanks for it.

I have a request having to do with its thumbnails (I
like having them, don't use gnome/kde/xfce so don't
know what else would generate them so don't want to
turn it off in tracker).

The request is that:

a) tracker use an app-local thumbnails dir, such as
~/.cache/tracker/thumbnails, which I have seen other
apps keeping data local for themselves like this

or 

b) allow a ./configure option to specify where they
should go 

or 

c) during routine indexing if tracker discovers 
thumbnails that used to exist but are now gone it can
regenerate them?


Part of the reason for the request is because I see
that if I delete a thumbnail, tracker will no longer
display its associated hit in tracker search GUI.  IOW
if I delete everything in ~/.thumbnails and do a
tracker search, 0 results are returned.

But far more importantly (because I want to keep all
of tracker's thumbnails), this is an issue because I
use other apps which dump crap in ~/.thumbnails
(gqview for example) meaning ~/.thumbnails ends up
with thousands (and tens of thousands) of files
totalling hundreds of megs.  

Because some of these thumbnails were generated once
then many months (or years) later never accessed
again, they're a HUGE waste of space; so I run a cron
job cleaning ~/.thumbnails out every couple of weeks
by +atime.

But now that tracker is mixing its in with these other
mostly useless thumbnails, I can't do that anymore.

So that's why I'd like you to consider this (problem?)
- if tracker's were separate from the other garbage in
~/.thumbnails (or would regenerate them when found
missing) I could keep this otherwise wasted space in
~/.thumbnails free for other uses w/o impacting
tracker.



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