Tracker: http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=32313&start=0

This option is really useful because it's much more likely that you will want to exclude specific categories than include them. Categories are just arbitrary strings so, if you are only including specific ones, you may miss something important. On the other hand, there are surely specific categories that you are not interested in (I'm looking at you, databasequery).

Setup

• Turn on debug mode.
• In the debug plugin settings, set logging to log all all priorities.
• Don't set a category because categories are like a box of chocolates, you never know what you're gonna get (but you do know which ones you don't want).

Before

You will see logs for every category. Mostly databasequery and deprecated

After

You can set categories to exclude and list the ones you don't want to see. This definitely includes databasequery because the debug plugin is listing them all anyway and it might also include deprecated unless you're on a mission to fix all that deprecated code. What's left will be a short, sweet list of logs that you might actually care about.

Closing in favor of #5146 which is to staging instead of master.