1. Enter rectangle mark mode with C-x SPC

2. Shrink or grow region by (This is going to select a rectangle):

   2.1. Do C-n or C-p to expand the cursor to the next or previous lines respectively.

   2.2. You can now play with text selection by doing C-f, C-b, M-f, M-b, etc.

3. This selected rectangle region can be used to perform some actions like

   • kill : C-x r k
   • delete: C-x r d
   • yank: C-x r y (paste last killed rectangle at cursor position)

emacs列编辑