It is impossible to select archived file by keyboard if there is only one file in an archive. In contrast, if there are several files in an archive, it is possible to select any archived file with keyboard. Reproducible: Always Steps to Reproduce: 1. Open any archive with only one archived file in it 2. Try to select the archived file by keyboard: press 'Tab' then arrow keys 3. Actual Results: The archived file is not selected. Expected Results: The archived file is selected.
This is still valid for current master. Selecting with arrow keys and tab does not work. However, I did find that pressing CTRL+A selects the file.
....Well is not entirely impossible, you can hit "space" and it will select the file.