Hey devs, i have a preliminary version of the keyboards shortcuts plugin with user settings. It was a complete rewrite. I struggled a lot with what to support as far as keys go. Javascript has multiple key events you can hook into, each with their pros and cons. The easiest would have been to use 'keypress', but then you miss out on a lot of keys (basically only a-z0-9 and a few extras).
I used 'keydown', but because the browser landscape with regards to keyboard events is a huge mess, im limiting the allowed keys to a relatively small subset. If you think 'how hard can it be', i invite you to read http://unixpapa.com/js/key.html and weep. And that page is even outdated, as I found opera responses that did not match any of that and conflicted with apple meta keys.
So, at least for now, you can use a-z, 0-9, F1-F12, Page Up, Page Down, End, Home, Insert Delete and Num0-9, and all of those combined with Shift/Ctrl/Alt. Yes, this means you cant use / , . ? [ ] ; : ' " etc. The browsers simply return too many permutation differences to support all that. I may be able to support some of those at a later stage.
I also replaced the keyboard icon, I redid the help popup, and i have preliminary support for other plugins. But that probably needs a bit more testing. I dont have all available roundcube commands supported yet, thats simply a matter of going through them. And it's pretty easy to create your own commands, so if anyone would like something specific done that can be create in javascript and could be useful to others, by all means tell me.
If you have some time, you can get the current alpha at https://github.com/corbosman/keyboard_shortcuts/tree/usersetting
Let me know if you find any bugs, or have suggestions,
Cor