问题
The last couple of days the Ctrl+Z shortcut (Undo) scrolls down a line (a-la emacs). I tried to switch schemes back and forth, change and redefine the Undo in Default scheme, nothing seems to work. Other combinations (Alt+Ctrl+Z) work fine, other workspaces work fine with Ctrl+Z.
Any tip that will save me from redefining the workspace?
回答1:
The key bindings are stored in the file [workspace]\.metadata\.plugins\org.eclipse.e4.workbench\workbench.xmi.
You can search for Ctrl+Z in this file. What does it look like? You could try to edit it by hand.
Of course, it is advisable to backup the workspace before.
回答2:
From time to time, I have encountered similar issues with keyboard shortcuts. They just disappear, or doesn't seem to work as expected.
Until I figure out what the root cause is, I check key bindings.
Window > Preferences > General > Keys
Check if the key bindings are still valid. If not, then set them and it should work.
回答3:
Window > Preferences > General > Keys Look for Undo in the list, if the Binding is empty click on Restore Command apply and close. That should enable the shortcut.
来源：https://stackoverflow.com/questions/16927851/undo-shortcut-not-working-in-eclipse