This feature has been re-implemented in BindPad.
Please download that addon.
Description:
Re-enables HotKey text, so that buttons holding BindPad actions are labeled with their keybinding.
Currently expected to work with the Blizzard UI, Bartender4, and Dominos. It may function with other addons if they bear sufficient similarity to the Blizzard UI, but this has not been tested.
Installation:
Extract and overwrite your existing BindPad.lua
Woops! If you downloaded the earliest version (1.0, not 1.0b) and are seeing spam, please re-download! You only need to /console reloadui, not restart your client, for the fix to take effect.