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While working in IntelliJ IDEA, the keyboard occasionally locks in a way that delete or < > ^ keys don't work properly anymore, in a way that delete doesn't do anything anymore, and the arrow keys scroll the entire source code / editor section.
I don't know if I am accidentially some kind of shortcut, but the only way I can get it back to normal again is closing and re-opening the IDE, which is annoying of course.
I'm on Mac OS X Lion, latest IntelliJ IDEA CE (11.1.1), but also had it before with the previous versions.
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In past IntelliJ versions, ctrl+shift+f would search the entire project (no matter whether you had at some point used "find in path").
If you choose Code | Reformat Code from the main menu or press Ctrl+Alt+L , IntelliJ IDEA tries to reformat the source code of the specified scope automatically. For more details on how to reformat, or exclude files from formatting, refer toReformat code.
From the main menu, select File | Repair IDE. IntelliJ IDEA will automatically launch the first recovery step and refresh the virtual file system. IntelliJ IDEA will display a notification that you can use to continue or complete the recovery process.
If you changed, added, or removed a shortcut for an action, you can reset it to the initial configuration. On the Keymap page of the Settings/Preferences dialog Ctrl+Alt+S , right-click an action and select Reset Shortcuts.
This answer on superuser.com worked for me:
ibus-daemon -rd Just turn off Vim Emulator from Tools like this picture:
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