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For some reason, KDE has the ability to switch among 20 (TWENTY) desktops.



How many users have 20 desktops? How many users have 10 windows open at the same time, though? Far more.

Why then doesn't KDE have shortcut keys to switch to those 10 windows, like other DEs do? (Unity, Windows, Cinnamon applets).

This is especially handy if you often switch among the same few apps, e.g. a browser, a file manager and an editor, but also have other apps open, so Alt+Tabbing to the desired window would take more time.[1] The Super/Meta/Win+0..9 keyboard shortcut saves me probably 5 seconds per minute on the average, so ~40 minutes a day.

Adding custom keyboard shortcuts for the app doesn't work, because pressing the shortcut will launch a new instance of the app.[2]

Adding Meta+1/2/3... via the window menu -> More Actions -> Window shortcut works, but there are two annoying problems:
1. The shortcut is forgotten when the window is closed, and you have to configure it again
2. If the app isn't running, the OS won't launch it for you. In Windows, you can launch the app that way.

[1]: KDE will order the most frequently used windows first, but you have to first look and see how many times you have to press Alt+Tab; while with Super+1 or Super+2, you always know which shortcut goes to one app or the other.

[2]: Some apps have an option to allow only one instance, but this is the exception rather than the rule, and even in that case, there will be a noticeable flicker of launching the new instance and seeing it exiting immediately.

Demand for this feature:
* Windows supports it
* Unity supports it
* Cinnamon users want it
* AskUbuntu users want it
* I've placed a $100 bounty on it

Files as Bug 368216.

I think better solution could be KWin runner(Krunner), where user type number of window and press enter.