Rebinding Eclipse shortcut to Ctrl+M, Ctrl+U, Ctrl+J, or Ctrl+[ fail

Question

I try to rebind some the Eclipse shortcuts to Ctrl + M , Ctrl + U , Ctrl + J or Ctrl + [ fails. The original shortcuts work but if I try to rebind to the ones in list, it will do nothing or behave strangely when I press the shortcut. What's wrong with these shortcuts?

Note, I check the keys and there are no conflicting ones, and I simply change the shortcut and nothing else! I use Eclipse 3.6.

Thanks.

Updated:I managed to get it work. I notice when you want to alter an existing shortcut, you can not define a shortcut that apply to more than one situations, or it will show conflict, but the original shortcut can apply to more than one situation, maybe a nature of Eclipse.

Answer 1

I managed to get it work. I notice when you want to alter an existing shortcut, you can not define a shortcut that apply to more than one situations, or it will show conflict, but the original shortcut can apply to more than one situation, maybe a nature of Eclipse.