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I would like to map Alt+N and Alt+P to the down arrow and up arrow, respectively. I want to do this because various popup dialogs in eclipse require the user to type the arrow keys and no shortcuts defined in eclipse (e.g., line-down) are effective in these dialogs.

what's the easiest way to accomplish this in eclipse? It should be ok for the setting to be global rather than just for eclipse.

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If you're using KDE, you can easily do it using the extremely flexible Shortcuts module (one of the many reasons I love KDE). Try this:

  1. In Configure Desktop, type Custom Shorcuts into the search box and open the respective dialog (that is Common Appearance and Behavior > Shortcuts and Gestures > Custom Shortcuts, in the old tree-style mode)
  2. Select Edit > New > Global Shorcut > Send Keyboard Input
  3. Now, on the Trigger tab, enter your desired shortcut key combination (I tried it with Alt+N)
  4. On the Action tab, type 'Down' into the box (without the quotes)
  5. Click Apply

Alt+N should now be equal to pressing the down key. (It works analogously with the keyword 'Up')

Edit: The Shortcuts module allows you to limit your configuration to Eclipse (or any other program) too, should you desire so.

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