And finally you can search on nested labels. Shame on Google... it's a useful feature so simple to automate!
The script generates a new icon on the side of every root custom label.
Clicking on it you search on that only label.
If you want a deeper search, open the label to show the sublabels and click again on the icon.
If you want an even deeper search, open the sublabels and click the icon again.
Compatibility with Firefox and Chromium browsers.
