Comment 4 for bug 672614

Andrei - thanks for reporting this and thanks too for a fix!

As mentioned by Zaur, this bug stops you running isearch-forward-regexp which is bound to control+alt+S in emacs by default.

Adding a new entry in gnome-keybinding-properties for control+alt/meta+S (to try and override tracker) doesn't work.

Bug exists in latest upstream tracker (git://git.gnome.org/tracker). I've reported it there:

  https://bugzilla.gnome.org/show_bug.cgi?id=636383