Indexing an Emacs Macro

This post is about how to increment and paste a counter while executing an emacs macro. For some reason, this is not easy to find on the Internet. So I'll write it down on my blog since I keep forgetting.

1. Set the start point of the counter
   M-: (setq i 1)
2. Start recording macro with
   C-x (
3. Insert index as needed with
   C-u M-: i
4. Increment index when finished with macro
   M-: (setq i (+ i 1))
5. Complete macro with
   C-x )
6. Execute Macro with
   C-x e

To execute the macro multiple times, use ALT-(# of times) C-x e.