This change is a bit larger than my last minor bookmark tweak. Again autoload bookmarks is set to "ask". Opening a track showed all of the bookmarks for any track in the current directory, not just bookmarks for the track you chose to open.
http://gerrit.rockbox.org/r/#/c/428/ The main change was to separate out a filtered count from the visible count of bookmarks, and then remember to filter again when moving down the list. This is because the bookmark list is cached, behaviour that has not changed here. This forum post asks for a similar feature, but adding it to the "ask" list is easier and less controversial than adding a new menu entry http://forums.rockbox.org/index.php/topic,42815.0.html