A preview of the full source code.

How to achieve to remove rectangles on a region in the same way than in Sublime Text using emacs...
Here's a example of how to use it.

..............
..1xxx..oooo..
..xxxx..oooo..
..xxxx..oooo..
..xxxx..oooo..
..xxxx..oooo..
..xxxx..oooo..
..xxxx..oooo..
..xxxx..oooo..
..xxxx..oooo..
..xxx2..oooo..
..............

* Put your cursor before the “1”
* call set-mark-command 【Ctrl+Space】
* move cursor to end of “2”
* call kill-rectangle (Ctrl+x r k) or replace-rectangle (Ctrl+x r t)