The mini-buffer should support optional tab completion configurable based on the mode that it is being used for:
dmenu style filtering: complete the next whitespace delimited substring
opening a file: next path segment
running a command: next matching command
...
Making use of this functionality for all applicable cases is probably a bit much for a first step, but getting the functionality in place is a good start.
25 was raised by @superpat specifically for adding kakoune style completion to the command mode interface. Doing the same for run mode and supporting completion of programs located in ~/.ad/bin would also be nice to have.
The mini-buffer should support optional tab completion configurable based on the mode that it is being used for:
Making use of this functionality for all applicable cases is probably a bit much for a first step, but getting the functionality in place is a good start.