ux: keyboard shortcuts are undiscoverable

[arxanas]

Description of the bug

Many people (like 5 so far?) have reported that they could not find out the keyboard shortcuts, and several resorted to source-diving. For example, see jj-vcs/jj#2951

The keyboard shortcuts are actually discoverable if you use the mouse to click the menu bar items, but 1) it never occurs to many people and 2) using the mouse may not even be an option for many.

Expected behavior

Ideal behavior would probably be a command palette widget. An indefinitely-usable workaround would be to pop up some kind of help page when pressing ?.

Actual behavior

You have to use the mouse or source-dive or simply despair.

Version of rustc

No response

[jacobsa]

+1, I found this issue while looking for documentation on what the keyboard shortcuts are when using from jj. In addition to them being undiscoverable in the editor itself (I never in 100 years would have thought to click in a TUI to use a menu), it would be good if there were some documentation linked from the readme.

[emesterhazy]

I think the discoverability issue may be addressed by #44 since I'm pretty sure all of the shortcuts are visible once the corresponding menu page is expanded.

[luator]

+1 for showing some help popup when pressing ?. This is actually the first thing I did, when trying to figure out how it works.

[robey]

I had this problem too, though I did get a good chuckle out of the current "?" dialog, well done. :)

[robey]

I gave this a shot: #91