Emacs — Using rectangles

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In Emacs, you can not only select by lines, but also by columns. If you select by columns, the selection is called a rectangle. You can use rectangles with the following shortcuts:

  • C-@ or C-Space — start selection (as usual)
  • M-x delete-rectangle or C-x r d — delete the rectangle delimited by the start selection and the current cursor position
  • M-x kill-rectangle or C-x r k — then you can use — M-x yank-rectangle or C-x r y
  • M-x clear-rectangle or C-x r c — replace the contents of the rectangle with spaces
  • M-x open-rectangle or C-x r o — insert spaces in the area and push the original contents to the right
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